--- _id: '9014' abstract: - lang: eng text: In this Letter, we explore experimentally the phase behavior of a dense active suspension of self-propelled colloids. In addition to a solidlike and gaslike phase observed for high and low densities, a novel cluster phase is reported at intermediate densities. This takes the form of a stationary assembly of dense aggregates—resulting from a permanent dynamical merging and separation of active colloids—whose average size grows with activity as a linear function of the self-propelling velocity. While different possible scenarios can be considered to account for these observations—such as a generic velocity weakening instability recently put forward—we show that the experimental results are reproduced mathematically by a chemotactic aggregation mechanism, originally introduced to account for bacterial aggregation and accounting here for diffusiophoretic chemical interaction between colloidal swimmers. article_number: '268303' article_processing_charge: No article_type: letter_note author: - first_name: I. full_name: Theurkauff, I. last_name: Theurkauff - first_name: C. full_name: Cottin-Bizonne, C. last_name: Cottin-Bizonne - first_name: Jérémie A full_name: Palacci, Jérémie A id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d last_name: Palacci orcid: 0000-0002-7253-9465 - first_name: C. full_name: Ybert, C. last_name: Ybert - first_name: L. full_name: Bocquet, L. last_name: Bocquet citation: ama: Theurkauff I, Cottin-Bizonne C, Palacci JA, Ybert C, Bocquet L. Dynamic clustering in active colloidal suspensions with chemical signaling. Physical Review Letters. 2012;108(26). doi:10.1103/physrevlett.108.268303 apa: Theurkauff, I., Cottin-Bizonne, C., Palacci, J. A., Ybert, C., & Bocquet, L. (2012). Dynamic clustering in active colloidal suspensions with chemical signaling. Physical Review Letters. American Physical Society . https://doi.org/10.1103/physrevlett.108.268303 chicago: Theurkauff, I., C. Cottin-Bizonne, Jérémie A Palacci, C. Ybert, and L. Bocquet. “Dynamic Clustering in Active Colloidal Suspensions with Chemical Signaling.” Physical Review Letters. American Physical Society , 2012. https://doi.org/10.1103/physrevlett.108.268303. ieee: I. Theurkauff, C. Cottin-Bizonne, J. A. Palacci, C. Ybert, and L. Bocquet, “Dynamic clustering in active colloidal suspensions with chemical signaling,” Physical Review Letters, vol. 108, no. 26. American Physical Society , 2012. ista: Theurkauff I, Cottin-Bizonne C, Palacci JA, Ybert C, Bocquet L. 2012. Dynamic clustering in active colloidal suspensions with chemical signaling. Physical Review Letters. 108(26), 268303. mla: Theurkauff, I., et al. “Dynamic Clustering in Active Colloidal Suspensions with Chemical Signaling.” Physical Review Letters, vol. 108, no. 26, 268303, American Physical Society , 2012, doi:10.1103/physrevlett.108.268303. short: I. Theurkauff, C. Cottin-Bizonne, J.A. Palacci, C. Ybert, L. Bocquet, Physical Review Letters 108 (2012). date_created: 2021-01-19T10:26:59Z date_published: 2012-06-29T00:00:00Z date_updated: 2023-02-23T13:46:45Z day: '29' doi: 10.1103/physrevlett.108.268303 extern: '1' external_id: arxiv: - '1202.6264' pmid: - '23005020' intvolume: ' 108' issue: '26' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1202.6264 month: '06' oa: 1 oa_version: Preprint pmid: 1 publication: Physical Review Letters publication_identifier: eissn: - '10797114' issn: - '00319007' publication_status: published publisher: 'American Physical Society ' quality_controlled: '1' scopus_import: '1' status: public title: Dynamic clustering in active colloidal suspensions with chemical signaling type: journal_article user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425 volume: 108 year: '2012' ... --- _id: '91' abstract: - lang: eng text: 'We demonstrate how to appropriately estimate the zero-frequency (static) hyperpolarizability of an organic molecule from its charge distribution, and we explore applications of these estimates for identifying and evaluating new organic nonlinear optical (NLO) materials. First, we calculate hyperpolarizabilities from Hartree-Fock-derived charge distributions and find order-of-magnitude agreement with experimental values. We show that these simple arithmetic calculations will enable systematic searches for new organic NLO molecules. Second, we derive hyperpolarizabilities from crystallographic data using a multipolar charge-density analysis and find good agreement with empirical calculations. This demonstrates an experimental determination of the full static hyperpolarizability tensor in a solid-state sample. ' acknowledgement: This work was supported by The Winston Churchill Foundation of the United States (A.P.H., M.A.B.F., D.D.H.), The Royal Society via a University Research Fellowship (J.M.C.), and the University of New Brunswick via The Vice-Chancellor’s Research Chair (J.M.C.). article_number: '033512' author: - first_name: Andrew P full_name: Higginbotham, Andrew P id: 4AD6785A-F248-11E8-B48F-1D18A9856A87 last_name: Higginbotham orcid: 0000-0003-2607-2363 - first_name: Jacqueline full_name: Cole, Jacqueline last_name: Cole - first_name: Martin full_name: Blood Forsythe, Martin last_name: Blood Forsythe - first_name: Daniel full_name: Hickstein, Daniel last_name: Hickstein citation: ama: Higginbotham AP, Cole J, Blood Forsythe M, Hickstein D. Identifying and evaluating organic nonlinear optical materials via molecular moments. Journal of Applied Physics. 2012;111(3). doi:10.1063/1.3678593 apa: Higginbotham, A. P., Cole, J., Blood Forsythe, M., & Hickstein, D. (2012). Identifying and evaluating organic nonlinear optical materials via molecular moments. Journal of Applied Physics. American Institute of Physics. https://doi.org/10.1063/1.3678593 chicago: Higginbotham, Andrew P, Jacqueline Cole, Martin Blood Forsythe, and Daniel Hickstein. “Identifying and Evaluating Organic Nonlinear Optical Materials via Molecular Moments.” Journal of Applied Physics. American Institute of Physics, 2012. https://doi.org/10.1063/1.3678593. ieee: A. P. Higginbotham, J. Cole, M. Blood Forsythe, and D. Hickstein, “Identifying and evaluating organic nonlinear optical materials via molecular moments,” Journal of Applied Physics, vol. 111, no. 3. American Institute of Physics, 2012. ista: Higginbotham AP, Cole J, Blood Forsythe M, Hickstein D. 2012. Identifying and evaluating organic nonlinear optical materials via molecular moments. Journal of Applied Physics. 111(3), 033512. mla: Higginbotham, Andrew P., et al. “Identifying and Evaluating Organic Nonlinear Optical Materials via Molecular Moments.” Journal of Applied Physics, vol. 111, no. 3, 033512, American Institute of Physics, 2012, doi:10.1063/1.3678593. short: A.P. Higginbotham, J. Cole, M. Blood Forsythe, D. Hickstein, Journal of Applied Physics 111 (2012). date_created: 2018-12-11T11:44:35Z date_published: 2012-02-07T00:00:00Z date_updated: 2021-01-12T08:21:50Z day: '07' doi: 10.1063/1.3678593 extern: '1' intvolume: ' 111' issue: '3' language: - iso: eng month: '02' oa_version: None publication: Journal of Applied Physics publication_status: published publisher: American Institute of Physics publist_id: '7963' quality_controlled: '1' status: public title: Identifying and evaluating organic nonlinear optical materials via molecular moments type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 111 year: '2012' ... --- _id: '9142' abstract: - lang: eng text: "In models of radiative–convective equilibrium it is known that convection can spontaneously aggregate into one single localized moist region if the domain is large enough. The large changes in the mean climate state and radiative fluxes accompanying this self-aggregation raise questions as to what simulations at lower resolutions with parameterized convection, in similar homogeneous geometries, should be expected to produce to be considered successful in mimicking a cloud-resolving model.\r\nThe authors investigate this self-aggregation in a nonrotating, three-dimensional cloud-resolving model on a square domain without large-scale forcing. It is found that self-aggregation is sensitive not only to the domain size, but also to the horizontal resolution. With horizontally homogeneous initial conditions, convective aggregation only occurs on domains larger than about 200km and with resolutions coarser than about 2km in the model examined. The system exhibits hysteresis, so that with aggregated initial conditions, convection remains aggregated even at our finest resolution, 500m, as long as the domain is greater than 200–300km.\r\nThe sensitivity of self-aggregation to resolution and domain size in this model is due to the sensitivity of the distribution of low clouds to these two parameters. Indeed, the mechanism responsible for the aggregation of convection is the dynamical response to the longwave radiative cooling from low clouds. Strong longwave cooling near cloud top in dry regions forces downward motion, which by continuity generates inflow near cloud top and near-surface outflow from dry regions. This circulation results in the net export of moist static energy from regions with low moist static energy, yielding a positive feedback." article_processing_charge: No article_type: original author: - first_name: Caroline J full_name: Muller, Caroline J id: f978ccb0-3f7f-11eb-b193-b0e2bd13182b last_name: Muller orcid: 0000-0001-5836-5350 - first_name: Isaac M. full_name: Held, Isaac M. last_name: Held citation: ama: Muller CJ, Held IM. Detailed investigation of the self-aggregation of convection in cloud-resolving simulations. Journal of the Atmospheric Sciences. 2012;69(8):2551-2565. doi:10.1175/jas-d-11-0257.1 apa: Muller, C. J., & Held, I. M. (2012). Detailed investigation of the self-aggregation of convection in cloud-resolving simulations. Journal of the Atmospheric Sciences. American Meteorological Society. https://doi.org/10.1175/jas-d-11-0257.1 chicago: Muller, Caroline J, and Isaac M. Held. “Detailed Investigation of the Self-Aggregation of Convection in Cloud-Resolving Simulations.” Journal of the Atmospheric Sciences. American Meteorological Society, 2012. https://doi.org/10.1175/jas-d-11-0257.1. ieee: C. J. Muller and I. M. Held, “Detailed investigation of the self-aggregation of convection in cloud-resolving simulations,” Journal of the Atmospheric Sciences, vol. 69, no. 8. American Meteorological Society, pp. 2551–2565, 2012. ista: Muller CJ, Held IM. 2012. Detailed investigation of the self-aggregation of convection in cloud-resolving simulations. Journal of the Atmospheric Sciences. 69(8), 2551–2565. mla: Muller, Caroline J., and Isaac M. Held. “Detailed Investigation of the Self-Aggregation of Convection in Cloud-Resolving Simulations.” Journal of the Atmospheric Sciences, vol. 69, no. 8, American Meteorological Society, 2012, pp. 2551–65, doi:10.1175/jas-d-11-0257.1. short: C.J. Muller, I.M. Held, Journal of the Atmospheric Sciences 69 (2012) 2551–2565. date_created: 2021-02-15T14:39:03Z date_published: 2012-08-01T00:00:00Z date_updated: 2022-01-24T13:49:41Z day: '01' doi: 10.1175/jas-d-11-0257.1 extern: '1' intvolume: ' 69' issue: '8' keyword: - Atmospheric Science language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1175/JAS-D-11-0257.1 month: '08' oa: 1 oa_version: Published Version page: 2551-2565 publication: Journal of the Atmospheric Sciences publication_identifier: issn: - 0022-4928 - 1520-0469 publication_status: published publisher: American Meteorological Society quality_controlled: '1' status: public title: Detailed investigation of the self-aggregation of convection in cloud-resolving simulations type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 69 year: '2012' ... --- _id: '9451' abstract: - lang: eng text: The Arabidopsis thaliana central cell, the companion cell of the egg, undergoes DNA demethylation before fertilization, but the targeting preferences, mechanism, and biological significance of this process remain unclear. Here, we show that active DNA demethylation mediated by the DEMETER DNA glycosylase accounts for all of the demethylation in the central cell and preferentially targets small, AT-rich, and nucleosome-depleted euchromatic transposable elements. The vegetative cell, the companion cell of sperm, also undergoes DEMETER-dependent demethylation of similar sequences, and lack of DEMETER in vegetative cells causes reduced small RNA–directed DNA methylation of transposons in sperm. Our results demonstrate that demethylation in companion cells reinforces transposon methylation in plant gametes and likely contributes to stable silencing of transposable elements across generations. article_processing_charge: No article_type: original author: - first_name: Christian A. full_name: Ibarra, Christian A. last_name: Ibarra - first_name: Xiaoqi full_name: Feng, Xiaoqi last_name: Feng - first_name: Vera K. full_name: Schoft, Vera K. last_name: Schoft - first_name: Tzung-Fu full_name: Hsieh, Tzung-Fu last_name: Hsieh - first_name: Rie full_name: Uzawa, Rie last_name: Uzawa - first_name: Jessica A. full_name: Rodrigues, Jessica A. last_name: Rodrigues - first_name: Assaf full_name: Zemach, Assaf last_name: Zemach - first_name: Nina full_name: Chumak, Nina last_name: Chumak - first_name: Adriana full_name: Machlicova, Adriana last_name: Machlicova - first_name: Toshiro full_name: Nishimura, Toshiro last_name: Nishimura - first_name: Denisse full_name: Rojas, Denisse last_name: Rojas - first_name: Robert L. full_name: Fischer, Robert L. last_name: Fischer - first_name: Hisashi full_name: Tamaru, Hisashi last_name: Tamaru - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 citation: ama: Ibarra CA, Feng X, Schoft VK, et al. Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes. Science. 2012;337(6100):1360-1364. doi:10.1126/science.1224839 apa: Ibarra, C. A., Feng, X., Schoft, V. K., Hsieh, T.-F., Uzawa, R., Rodrigues, J. A., … Zilberman, D. (2012). Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes. Science. American Association for the Advancement of Science. https://doi.org/10.1126/science.1224839 chicago: Ibarra, Christian A., Xiaoqi Feng, Vera K. Schoft, Tzung-Fu Hsieh, Rie Uzawa, Jessica A. Rodrigues, Assaf Zemach, et al. “Active DNA Demethylation in Plant Companion Cells Reinforces Transposon Methylation in Gametes.” Science. American Association for the Advancement of Science, 2012. https://doi.org/10.1126/science.1224839. ieee: C. A. Ibarra et al., “Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes,” Science, vol. 337, no. 6100. American Association for the Advancement of Science, pp. 1360–1364, 2012. ista: Ibarra CA, Feng X, Schoft VK, Hsieh T-F, Uzawa R, Rodrigues JA, Zemach A, Chumak N, Machlicova A, Nishimura T, Rojas D, Fischer RL, Tamaru H, Zilberman D. 2012. Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes. Science. 337(6100), 1360–1364. mla: Ibarra, Christian A., et al. “Active DNA Demethylation in Plant Companion Cells Reinforces Transposon Methylation in Gametes.” Science, vol. 337, no. 6100, American Association for the Advancement of Science, 2012, pp. 1360–64, doi:10.1126/science.1224839. short: C.A. Ibarra, X. Feng, V.K. Schoft, T.-F. Hsieh, R. Uzawa, J.A. Rodrigues, A. Zemach, N. Chumak, A. Machlicova, T. Nishimura, D. Rojas, R.L. Fischer, H. Tamaru, D. Zilberman, Science 337 (2012) 1360–1364. date_created: 2021-06-04T07:51:31Z date_published: 2012-09-14T00:00:00Z date_updated: 2021-12-14T08:28:51Z day: '14' ddc: - '580' department: - _id: DaZi doi: 10.1126/science.1224839 extern: '1' external_id: pmid: - '22984074' has_accepted_license: '1' intvolume: ' 337' issue: '6100' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4034762/ month: '09' oa: 1 oa_version: Published Version page: 1360-1364 pmid: 1 publication: Science publication_identifier: eissn: - 1095-9203 issn: - 0036-8075 publication_status: published publisher: American Association for the Advancement of Science quality_controlled: '1' scopus_import: '1' status: public title: Active DNA demethylation in plant companion cells reinforces transposon methylation in gametes type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 337 year: '2012' ... --- _id: '9535' abstract: - lang: eng text: The most well-studied function of DNA methylation in eukaryotic cells is the transcriptional silencing of genes and transposons. More recent results showed that many eukaryotes methylate the bodies of genes as well and that this methylation correlates with transcriptional activity rather than repression. The purpose of gene body methylation remains mysterious, but is potentially related to the histone variant H2A.Z. Studies in plants and animals have shown that the genome-wide distributions of H2A.Z and DNA methylation are strikingly anticorrelated. Furthermore, we and other investigators have shown that this relationship is likely to be the result of an ancient but unknown mechanism by which DNA methylation prevents the incorporation of H2A.Z. Recently, we discovered strong correlations between the presence of H2A.Z within gene bodies, the degree to which a gene's expression varies across tissue types or environmental conditions, and transcriptional misregulation in an h2a.z mutant. We propose that one basal function of gene body methylation is the establishment of constitutive expression patterns within housekeeping genes by excluding H2A.Z from their bodies. article_processing_charge: No article_type: review author: - first_name: D. full_name: Coleman-Derr, D. last_name: Coleman-Derr - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 citation: ama: Coleman-Derr D, Zilberman D. DNA methylation, H2A.Z, and the regulation of constitutive expression. Cold Spring Harbor Symposia on Quantitative Biology. 2012;77:147-154. doi:10.1101/sqb.2012.77.014944 apa: Coleman-Derr, D., & Zilberman, D. (2012). DNA methylation, H2A.Z, and the regulation of constitutive expression. Cold Spring Harbor Symposia on Quantitative Biology. Cold Spring Harbor Laboratory Press. https://doi.org/10.1101/sqb.2012.77.014944 chicago: Coleman-Derr, D., and Daniel Zilberman. “DNA Methylation, H2A.Z, and the Regulation of Constitutive Expression.” Cold Spring Harbor Symposia on Quantitative Biology. Cold Spring Harbor Laboratory Press, 2012. https://doi.org/10.1101/sqb.2012.77.014944. ieee: D. Coleman-Derr and D. Zilberman, “DNA methylation, H2A.Z, and the regulation of constitutive expression,” Cold Spring Harbor Symposia on Quantitative Biology, vol. 77. Cold Spring Harbor Laboratory Press, pp. 147–154, 2012. ista: Coleman-Derr D, Zilberman D. 2012. DNA methylation, H2A.Z, and the regulation of constitutive expression. Cold Spring Harbor Symposia on Quantitative Biology. 77, 147–154. mla: Coleman-Derr, D., and Daniel Zilberman. “DNA Methylation, H2A.Z, and the Regulation of Constitutive Expression.” Cold Spring Harbor Symposia on Quantitative Biology, vol. 77, Cold Spring Harbor Laboratory Press, 2012, pp. 147–54, doi:10.1101/sqb.2012.77.014944. short: D. Coleman-Derr, D. Zilberman, Cold Spring Harbor Symposia on Quantitative Biology 77 (2012) 147–154. date_created: 2021-06-08T13:01:23Z date_published: 2012-12-18T00:00:00Z date_updated: 2021-12-14T08:33:09Z day: '18' department: - _id: DaZi doi: 10.1101/sqb.2012.77.014944 extern: '1' external_id: pmid: - '23250988' intvolume: ' 77' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1101/sqb.2012.77.014944 month: '12' oa: 1 oa_version: Published Version page: 147-154 pmid: 1 publication: Cold Spring Harbor Symposia on Quantitative Biology publication_identifier: eissn: - 1943-4456 issn: - 0091-7451 publication_status: published publisher: Cold Spring Harbor Laboratory Press quality_controlled: '1' scopus_import: '1' status: public title: DNA methylation, H2A.Z, and the regulation of constitutive expression type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 77 year: '2012' ... --- _id: '3242' abstract: - lang: eng text: Due to the omnipresent risk of epidemics, insect societies have evolved sophisticated disease defences at the individual and colony level. An intriguing yet little understood phenomenon is that social contact to pathogen-exposed individuals reduces susceptibility of previously naive nestmates to this pathogen. We tested whether such social immunisation in Lasius ants against the entomopathogenic fungus Metarhizium anisopliae is based on active upregulation of the immune system of nestmates following contact to an infectious individual or passive protection via transfer of immune effectors among group members—that is, active versus passive immunisation. We found no evidence for involvement of passive immunisation via transfer of antimicrobials among colony members. Instead, intensive allogrooming behaviour between naive and pathogen-exposed ants before fungal conidia firmly attached to their cuticle suggested passage of the pathogen from the exposed individuals to their nestmates. By tracing fluorescence-labelled conidia we indeed detected frequent pathogen transfer to the nestmates, where they caused low-level infections as revealed by growth of small numbers of fungal colony forming units from their dissected body content. These infections rarely led to death, but instead promoted an enhanced ability to inhibit fungal growth and an active upregulation of immune genes involved in antifungal defences (defensin and prophenoloxidase, PPO). Contrarily, there was no upregulation of the gene cathepsin L, which is associated with antibacterial and antiviral defences, and we found no increased antibacterial activity of nestmates of fungus-exposed ants. This indicates that social immunisation after fungal exposure is specific, similar to recent findings for individual-level immune priming in invertebrates. Epidemiological modeling further suggests that active social immunisation is adaptive, as it leads to faster elimination of the disease and lower death rates than passive immunisation. Interestingly, humans have also utilised the protective effect of low-level infections to fight smallpox by intentional transfer of low pathogen doses (“variolation” or “inoculation”). acknowledgement: Funding for this project was obtained by the German Research Foundation DFG (http://www.dfg.de/en/index.jsp) as an Individual Research Grant (CR118/2-1 to SC) and the European Research Council (http://erc.europa.eu/) in form of two ERC Starting Grants (ERC-2009-StG240371-SocialVaccines to SC and ERC-2010-StG259294-LatentCauses to FJT). In addition, the Junge Akademie (Young Academy of the Berlin-Brandenburg Academy of Sciences and Humanities and the National Academy of Sciences Leopoldina (http://www.diejungeakademie.de/english/i​ndex.html) funded this joint Antnet project of SC and FJT. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. article_number: e1001300 author: - first_name: Matthias full_name: Konrad, Matthias id: 46528076-F248-11E8-B48F-1D18A9856A87 last_name: Konrad - first_name: Meghan full_name: Vyleta, Meghan id: 418901AA-F248-11E8-B48F-1D18A9856A87 last_name: Vyleta - first_name: Fabian full_name: Theis, Fabian last_name: Theis - first_name: Miriam full_name: Stock, Miriam id: 42462816-F248-11E8-B48F-1D18A9856A87 last_name: Stock - first_name: Simon full_name: Tragust, Simon id: 35A7A418-F248-11E8-B48F-1D18A9856A87 last_name: Tragust - first_name: Martina full_name: Klatt, Martina id: E60F29C6-E9AE-11E9-AF6E-D190C7302F38 last_name: Klatt - first_name: Verena full_name: Drescher, Verena last_name: Drescher - first_name: Carsten full_name: Marr, Carsten last_name: Marr - first_name: Line V full_name: Ugelvig, Line V id: 3DC97C8E-F248-11E8-B48F-1D18A9856A87 last_name: Ugelvig orcid: 0000-0003-1832-8883 - first_name: Sylvia full_name: Cremer, Sylvia id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87 last_name: Cremer orcid: 0000-0002-2193-3868 citation: ama: Konrad M, Vyleta M, Theis F, et al. Social transfer of pathogenic fungus promotes active immunisation in ant colonies. PLoS Biology. 2012;10(4). doi:10.1371/journal.pbio.1001300 apa: Konrad, M., Vyleta, M., Theis, F., Stock, M., Tragust, S., Klatt, M., … Cremer, S. (2012). Social transfer of pathogenic fungus promotes active immunisation in ant colonies. PLoS Biology. Public Library of Science. https://doi.org/10.1371/journal.pbio.1001300 chicago: Konrad, Matthias, Meghan Vyleta, Fabian Theis, Miriam Stock, Simon Tragust, Martina Klatt, Verena Drescher, Carsten Marr, Line V Ugelvig, and Sylvia Cremer. “Social Transfer of Pathogenic Fungus Promotes Active Immunisation in Ant Colonies.” PLoS Biology. Public Library of Science, 2012. https://doi.org/10.1371/journal.pbio.1001300. ieee: M. Konrad et al., “Social transfer of pathogenic fungus promotes active immunisation in ant colonies,” PLoS Biology, vol. 10, no. 4. Public Library of Science, 2012. ista: Konrad M, Vyleta M, Theis F, Stock M, Tragust S, Klatt M, Drescher V, Marr C, Ugelvig LV, Cremer S. 2012. Social transfer of pathogenic fungus promotes active immunisation in ant colonies. PLoS Biology. 10(4), e1001300. mla: Konrad, Matthias, et al. “Social Transfer of Pathogenic Fungus Promotes Active Immunisation in Ant Colonies.” PLoS Biology, vol. 10, no. 4, e1001300, Public Library of Science, 2012, doi:10.1371/journal.pbio.1001300. short: M. Konrad, M. Vyleta, F. Theis, M. Stock, S. Tragust, M. Klatt, V. Drescher, C. Marr, L.V. Ugelvig, S. Cremer, PLoS Biology 10 (2012). date_created: 2018-12-11T12:02:13Z date_published: 2012-04-03T00:00:00Z date_updated: 2023-02-23T14:07:11Z day: '03' ddc: - '570' - '579' department: - _id: SyCr doi: 10.1371/journal.pbio.1001300 ec_funded: 1 file: - access_level: open_access checksum: 4ebacefd9fbab5c68adf829124115fd1 content_type: application/pdf creator: system date_created: 2018-12-12T10:08:28Z date_updated: 2020-07-14T12:46:04Z file_id: '4689' file_name: IST-2012-96-v1+1_journal.pbio.1001300.pdf file_size: 674228 relation: main_file file_date_updated: 2020-07-14T12:46:04Z has_accepted_license: '1' intvolume: ' 10' issue: '4' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '04' oa: 1 oa_version: Published Version project: - _id: 25DAF0B2-B435-11E9-9278-68D0E5697425 grant_number: CR-118/3-1 name: Host-Parasite Coevolution - _id: 25DC711C-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '243071' name: 'Social Vaccination in Ant Colonies: from Individual Mechanisms to Society Effects' - _id: 25E0E184-B435-11E9-9278-68D0E5697425 name: Antnet publication: PLoS Biology publication_status: published publisher: Public Library of Science publist_id: '3434' pubrep_id: '96' quality_controlled: '1' related_material: record: - id: '9755' relation: research_data status: public scopus_import: 1 status: public title: Social transfer of pathogenic fungus promotes active immunisation in ant colonies tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 10 year: '2012' ... --- _id: '9755' abstract: - lang: eng text: Due to the omnipresent risk of epidemics, insect societies have evolved sophisticated disease defences at the individual and colony level. An intriguing yet little understood phenomenon is that social contact to pathogen-exposed individuals reduces susceptibility of previously naive nestmates to this pathogen. We tested whether such social immunisation in Lasius ants against the entomopathogenic fungus Metarhizium anisopliae is based on active upregulation of the immune system of nestmates following contact to an infectious individual or passive protection via transfer of immune effectors among group members—that is, active versus passive immunisation. We found no evidence for involvement of passive immunisation via transfer of antimicrobials among colony members. Instead, intensive allogrooming behaviour between naive and pathogen-exposed ants before fungal conidia firmly attached to their cuticle suggested passage of the pathogen from the exposed individuals to their nestmates. By tracing fluorescence-labelled conidia we indeed detected frequent pathogen transfer to the nestmates, where they caused low-level infections as revealed by growth of small numbers of fungal colony forming units from their dissected body content. These infections rarely led to death, but instead promoted an enhanced ability to inhibit fungal growth and an active upregulation of immune genes involved in antifungal defences (defensin and prophenoloxidase, PPO). Contrarily, there was no upregulation of the gene cathepsin L, which is associated with antibacterial and antiviral defences, and we found no increased antibacterial activity of nestmates of fungus-exposed ants. This indicates that social immunisation after fungal exposure is specific, similar to recent findings for individual-level immune priming in invertebrates. Epidemiological modeling further suggests that active social immunisation is adaptive, as it leads to faster elimination of the disease and lower death rates than passive immunisation. Interestingly, humans have also utilised the protective effect of low-level infections to fight smallpox by intentional transfer of low pathogen doses (“variolation” or “inoculation”). article_processing_charge: No author: - first_name: Matthias full_name: Konrad, Matthias id: 46528076-F248-11E8-B48F-1D18A9856A87 last_name: Konrad - first_name: Meghan full_name: Vyleta, Meghan id: 418901AA-F248-11E8-B48F-1D18A9856A87 last_name: Vyleta - first_name: Fabian full_name: Theis, Fabian last_name: Theis - first_name: Miriam full_name: Stock, Miriam id: 42462816-F248-11E8-B48F-1D18A9856A87 last_name: Stock - first_name: Martina full_name: Klatt, Martina id: E60F29C6-E9AE-11E9-AF6E-D190C7302F38 last_name: Klatt - first_name: Verena full_name: Drescher, Verena last_name: Drescher - first_name: Carsten full_name: Marr, Carsten last_name: Marr - first_name: Line V full_name: Ugelvig, Line V id: 3DC97C8E-F248-11E8-B48F-1D18A9856A87 last_name: Ugelvig orcid: 0000-0003-1832-8883 - first_name: Sylvia full_name: Cremer, Sylvia id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87 last_name: Cremer orcid: 0000-0002-2193-3868 citation: ama: 'Konrad M, Vyleta M, Theis F, et al. Data from: Social transfer of pathogenic fungus promotes active immunisation in ant colonies. 2012. doi:10.5061/dryad.sv37s' apa: 'Konrad, M., Vyleta, M., Theis, F., Stock, M., Klatt, M., Drescher, V., … Cremer, S. (2012). Data from: Social transfer of pathogenic fungus promotes active immunisation in ant colonies. Dryad. https://doi.org/10.5061/dryad.sv37s' chicago: 'Konrad, Matthias, Meghan Vyleta, Fabian Theis, Miriam Stock, Martina Klatt, Verena Drescher, Carsten Marr, Line V Ugelvig, and Sylvia Cremer. “Data from: Social Transfer of Pathogenic Fungus Promotes Active Immunisation in Ant Colonies.” Dryad, 2012. https://doi.org/10.5061/dryad.sv37s.' ieee: 'M. Konrad et al., “Data from: Social transfer of pathogenic fungus promotes active immunisation in ant colonies.” Dryad, 2012.' ista: 'Konrad M, Vyleta M, Theis F, Stock M, Klatt M, Drescher V, Marr C, Ugelvig LV, Cremer S. 2012. Data from: Social transfer of pathogenic fungus promotes active immunisation in ant colonies, Dryad, 10.5061/dryad.sv37s.' mla: 'Konrad, Matthias, et al. Data from: Social Transfer of Pathogenic Fungus Promotes Active Immunisation in Ant Colonies. Dryad, 2012, doi:10.5061/dryad.sv37s.' short: M. Konrad, M. Vyleta, F. Theis, M. Stock, M. Klatt, V. Drescher, C. Marr, L.V. Ugelvig, S. Cremer, (2012). date_created: 2021-07-30T08:39:13Z date_published: 2012-09-27T00:00:00Z date_updated: 2023-02-23T11:18:41Z day: '27' department: - _id: SyCr doi: 10.5061/dryad.sv37s main_file_link: - open_access: '1' url: https://doi.org/10.5061/dryad.sv37s month: '09' oa: 1 oa_version: Published Version publisher: Dryad related_material: record: - id: '3242' relation: used_in_publication status: public status: public title: 'Data from: Social transfer of pathogenic fungus promotes active immunisation in ant colonies' type: research_data_reference user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf year: '2012' ... --- _id: '9758' abstract: - lang: eng text: 'We propose a two-step procedure for estimating multiple migration rates in an approximate Bayesian computation (ABC) framework, accounting for global nuisance parameters. The approach is not limited to migration, but generally of interest for inference problems with multiple parameters and a modular structure (e.g. independent sets of demes or loci). We condition on a known, but complex demographic model of a spatially subdivided population, motivated by the reintroduction of Alpine ibex (Capra ibex) into Switzerland. In the first step, the global parameters ancestral mutation rate and male mating skew have been estimated for the whole population in Aeschbacher et al. (Genetics 2012; 192: 1027). In the second step, we estimate in this study the migration rates independently for clusters of demes putatively connected by migration. For large clusters (many migration rates), ABC faces the problem of too many summary statistics. We therefore assess by simulation if estimation per pair of demes is a valid alternative. We find that the trade-off between reduced dimensionality for the pairwise estimation on the one hand and lower accuracy due to the assumption of pairwise independence on the other depends on the number of migration rates to be inferred: the accuracy of the pairwise approach increases with the number of parameters, relative to the joint estimation approach. To distinguish between low and zero migration, we perform ABC-type model comparison between a model with migration and one without. Applying the approach to microsatellite data from Alpine ibex, we find no evidence for substantial gene flow via migration, except for one pair of demes in one direction.' article_processing_charge: No author: - first_name: Simon full_name: Aeschbacher, Simon id: 2D35326E-F248-11E8-B48F-1D18A9856A87 last_name: Aeschbacher - first_name: Andreas full_name: Futschik, Andreas last_name: Futschik - first_name: Mark full_name: Beaumont, Mark last_name: Beaumont citation: ama: 'Aeschbacher S, Futschik A, Beaumont M. Data from: Approximate Bayesian computation for modular inference problems with many parameters: the example of migration rates. 2012. doi:10.5061/dryad.274b1' apa: 'Aeschbacher, S., Futschik, A., & Beaumont, M. (2012). Data from: Approximate Bayesian computation for modular inference problems with many parameters: the example of migration rates. Dryad. https://doi.org/10.5061/dryad.274b1' chicago: 'Aeschbacher, Simon, Andreas Futschik, and Mark Beaumont. “Data from: Approximate Bayesian Computation for Modular Inference Problems with Many Parameters: The Example of Migration Rates.” Dryad, 2012. https://doi.org/10.5061/dryad.274b1.' ieee: 'S. Aeschbacher, A. Futschik, and M. Beaumont, “Data from: Approximate Bayesian computation for modular inference problems with many parameters: the example of migration rates.” Dryad, 2012.' ista: 'Aeschbacher S, Futschik A, Beaumont M. 2012. Data from: Approximate Bayesian computation for modular inference problems with many parameters: the example of migration rates, Dryad, 10.5061/dryad.274b1.' mla: 'Aeschbacher, Simon, et al. Data from: Approximate Bayesian Computation for Modular Inference Problems with Many Parameters: The Example of Migration Rates. Dryad, 2012, doi:10.5061/dryad.274b1.' short: S. Aeschbacher, A. Futschik, M. Beaumont, (2012). date_created: 2021-07-30T12:36:39Z date_published: 2012-11-14T00:00:00Z date_updated: 2023-02-23T11:05:19Z day: '14' department: - _id: NiBa doi: 10.5061/dryad.274b1 main_file_link: - open_access: '1' url: https://doi.org/10.5061/dryad.274b1 month: '11' oa: 1 oa_version: Published Version publisher: Dryad related_material: record: - id: '2944' relation: used_in_publication status: public status: public title: 'Data from: Approximate Bayesian computation for modular inference problems with many parameters: the example of migration rates' type: research_data_reference user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf year: '2012' ... --- _id: '9757' abstract: - lang: eng text: To fight infectious diseases, host immune defences are employed at multiple levels. Sanitary behaviour, such as pathogen avoidance and removal, acts as a first line of defence to prevent infection [1] before activation of the physiological immune system. Insect societies have evolved a wide range of collective hygiene measures and intensive health care towards pathogen-exposed group members [2]. One of the most common behaviours is allogrooming, in which nestmates remove infectious particles from the body surfaces of exposed individuals [3]. Here we show that, in invasive garden ants, grooming of fungus-exposed brood is effective beyond the sheer mechanical removal of fungal conidiospores as it also includes chemical disinfection through the application of poison produced by the ants themselves. Formic acid is the main active component of the poison. It inhibits fungal growth of conidiospores remaining on the brood surface after grooming and also those collected in the mouth of the grooming ant. This dual function is achieved by uptake of the poison droplet into the mouth through acidopore self-grooming and subsequent application onto the infectious brood via brood grooming. This extraordinary behaviour extends current understanding of grooming and the establishment of social immunity in insect societies. article_processing_charge: No author: - first_name: Simon full_name: Tragust, Simon id: 35A7A418-F248-11E8-B48F-1D18A9856A87 last_name: Tragust - first_name: Barbara full_name: Mitteregger, Barbara id: 479DDAAC-E9CD-11E9-9B5F-82450873F7A1 last_name: Mitteregger - first_name: Vanessa full_name: Barone, Vanessa id: 419EECCC-F248-11E8-B48F-1D18A9856A87 last_name: Barone orcid: 0000-0003-2676-3367 - first_name: Matthias full_name: Konrad, Matthias id: 46528076-F248-11E8-B48F-1D18A9856A87 last_name: Konrad - first_name: Line V full_name: Ugelvig, Line V id: 3DC97C8E-F248-11E8-B48F-1D18A9856A87 last_name: Ugelvig orcid: 0000-0003-1832-8883 - first_name: Sylvia full_name: Cremer, Sylvia id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87 last_name: Cremer orcid: 0000-0002-2193-3868 citation: ama: 'Tragust S, Mitteregger B, Barone V, Konrad M, Ugelvig LV, Cremer S. Data from: Ants disinfect fungus-exposed brood by oral uptake and spread of their poison. 2012. doi:10.5061/dryad.61649' apa: 'Tragust, S., Mitteregger, B., Barone, V., Konrad, M., Ugelvig, L. V., & Cremer, S. (2012). Data from: Ants disinfect fungus-exposed brood by oral uptake and spread of their poison. Dryad. https://doi.org/10.5061/dryad.61649' chicago: 'Tragust, Simon, Barbara Mitteregger, Vanessa Barone, Matthias Konrad, Line V Ugelvig, and Sylvia Cremer. “Data from: Ants Disinfect Fungus-Exposed Brood by Oral Uptake and Spread of Their Poison.” Dryad, 2012. https://doi.org/10.5061/dryad.61649.' ieee: 'S. Tragust, B. Mitteregger, V. Barone, M. Konrad, L. V. Ugelvig, and S. Cremer, “Data from: Ants disinfect fungus-exposed brood by oral uptake and spread of their poison.” Dryad, 2012.' ista: 'Tragust S, Mitteregger B, Barone V, Konrad M, Ugelvig LV, Cremer S. 2012. Data from: Ants disinfect fungus-exposed brood by oral uptake and spread of their poison, Dryad, 10.5061/dryad.61649.' mla: 'Tragust, Simon, et al. Data from: Ants Disinfect Fungus-Exposed Brood by Oral Uptake and Spread of Their Poison. Dryad, 2012, doi:10.5061/dryad.61649.' short: S. Tragust, B. Mitteregger, V. Barone, M. Konrad, L.V. Ugelvig, S. Cremer, (2012). date_created: 2021-07-30T12:31:31Z date_published: 2012-12-14T00:00:00Z date_updated: 2023-02-23T11:04:28Z day: '14' department: - _id: SyCr doi: 10.5061/dryad.61649 main_file_link: - open_access: '1' url: https://doi.org/10.5061/dryad.61649 month: '12' oa: 1 oa_version: Published Version publisher: Dryad related_material: record: - id: '2926' relation: used_in_publication status: public status: public title: 'Data from: Ants disinfect fungus-exposed brood by oral uptake and spread of their poison' type: research_data_reference user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf year: '2012' ... --- _id: '8504' abstract: - lang: eng text: In this paper we present a surprising example of a Cr unimodal map of an interval f:I→I whose number of periodic points Pn(f)=∣{x∈I:fnx=x}∣ grows faster than any ahead given sequence along a subsequence nk=3k. This example also shows that ‘non-flatness’ of critical points is necessary for the Martens–de Melo–van Strien theorem [M. Martens, W. de Melo and S. van Strien. Julia–Fatou–Sullivan theory for real one-dimensional dynamics. Acta Math.168(3–4) (1992), 273–318] to hold. article_processing_charge: No article_type: original author: - first_name: Vadim full_name: Kaloshin, Vadim id: FE553552-CDE8-11E9-B324-C0EBE5697425 last_name: Kaloshin orcid: 0000-0002-6051-2628 - first_name: O. S. full_name: KOZLOVSKI, O. S. last_name: KOZLOVSKI citation: ama: Kaloshin V, KOZLOVSKI OS. A Cr unimodal map with an arbitrary fast growth of the number of periodic points. Ergodic Theory and Dynamical Systems. 2012;32(1):159-165. doi:10.1017/s0143385710000817 apa: Kaloshin, V., & KOZLOVSKI, O. S. (2012). A Cr unimodal map with an arbitrary fast growth of the number of periodic points. Ergodic Theory and Dynamical Systems. Cambridge University Press. https://doi.org/10.1017/s0143385710000817 chicago: Kaloshin, Vadim, and O. S. KOZLOVSKI. “A Cr Unimodal Map with an Arbitrary Fast Growth of the Number of Periodic Points.” Ergodic Theory and Dynamical Systems. Cambridge University Press, 2012. https://doi.org/10.1017/s0143385710000817. ieee: V. Kaloshin and O. S. KOZLOVSKI, “A Cr unimodal map with an arbitrary fast growth of the number of periodic points,” Ergodic Theory and Dynamical Systems, vol. 32, no. 1. Cambridge University Press, pp. 159–165, 2012. ista: Kaloshin V, KOZLOVSKI OS. 2012. A Cr unimodal map with an arbitrary fast growth of the number of periodic points. Ergodic Theory and Dynamical Systems. 32(1), 159–165. mla: Kaloshin, Vadim, and O. S. KOZLOVSKI. “A Cr Unimodal Map with an Arbitrary Fast Growth of the Number of Periodic Points.” Ergodic Theory and Dynamical Systems, vol. 32, no. 1, Cambridge University Press, 2012, pp. 159–65, doi:10.1017/s0143385710000817. short: V. Kaloshin, O.S. KOZLOVSKI, Ergodic Theory and Dynamical Systems 32 (2012) 159–165. date_created: 2020-09-18T10:47:33Z date_published: 2012-02-01T00:00:00Z date_updated: 2021-01-12T08:19:44Z day: '01' doi: 10.1017/s0143385710000817 extern: '1' intvolume: ' 32' issue: '1' keyword: - Applied Mathematics - General Mathematics language: - iso: eng month: '02' oa_version: None page: 159-165 publication: Ergodic Theory and Dynamical Systems publication_identifier: issn: - 0143-3857 - 1469-4417 publication_status: published publisher: Cambridge University Press quality_controlled: '1' status: public title: A Cr unimodal map with an arbitrary fast growth of the number of periodic points type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 32 year: '2012' ... --- _id: '8503' abstract: - lang: eng text: We prove there are finitely many isometry classes of planar central configurations (also called relative equilibria) in the Newtonian 5-body problem, except perhaps if the 5-tuple of positive masses belongs to a given codimension 2 subvariety of the mass space. article_processing_charge: No article_type: original author: - first_name: Alain full_name: Albouy, Alain last_name: Albouy - first_name: Vadim full_name: Kaloshin, Vadim id: FE553552-CDE8-11E9-B324-C0EBE5697425 last_name: Kaloshin orcid: 0000-0002-6051-2628 citation: ama: Albouy A, Kaloshin V. Finiteness of central configurations of five bodies in the plane. Annals of Mathematics. 2012;176(1):535-588. doi:10.4007/annals.2012.176.1.10 apa: Albouy, A., & Kaloshin, V. (2012). Finiteness of central configurations of five bodies in the plane. Annals of Mathematics. Princeton University Press. https://doi.org/10.4007/annals.2012.176.1.10 chicago: Albouy, Alain, and Vadim Kaloshin. “Finiteness of Central Configurations of Five Bodies in the Plane.” Annals of Mathematics. Princeton University Press, 2012. https://doi.org/10.4007/annals.2012.176.1.10. ieee: A. Albouy and V. Kaloshin, “Finiteness of central configurations of five bodies in the plane,” Annals of Mathematics, vol. 176, no. 1. Princeton University Press, pp. 535–588, 2012. ista: Albouy A, Kaloshin V. 2012. Finiteness of central configurations of five bodies in the plane. Annals of Mathematics. 176(1), 535–588. mla: Albouy, Alain, and Vadim Kaloshin. “Finiteness of Central Configurations of Five Bodies in the Plane.” Annals of Mathematics, vol. 176, no. 1, Princeton University Press, 2012, pp. 535–88, doi:10.4007/annals.2012.176.1.10. short: A. Albouy, V. Kaloshin, Annals of Mathematics 176 (2012) 535–588. date_created: 2020-09-18T10:47:24Z date_published: 2012-07-01T00:00:00Z date_updated: 2021-01-12T08:19:44Z day: '01' doi: 10.4007/annals.2012.176.1.10 extern: '1' intvolume: ' 176' issue: '1' language: - iso: eng month: '07' oa_version: None page: 535-588 publication: Annals of Mathematics publication_identifier: issn: - 0003-486X publication_status: published publisher: Princeton University Press quality_controlled: '1' status: public title: Finiteness of central configurations of five bodies in the plane type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 176 year: '2012' ... --- _id: '887' abstract: - lang: eng text: A subject of extensive study in evolutionary theory has been the issue of how neutral, redundant copies can be maintained in the genome for long periods of time. Concurrently, examples of adaptive gene duplications to various environmental conditions in different species have been described. At this point, it is too early to tell whether or not a substantial fraction of gene copies have initially achieved fixation by positive selection for increased dosage. Nevertheless, enough examples have accumulated in the literature that such a possibility should be considered. Here, I review the recent examples of adaptive gene duplications and make an attempt to draw generalizations on what types of genes may be particularly prone to be selected for under certain environmental conditions. The identification of copy-number variation in ecological field studies of species adapting to stressful or novel environmental conditions may improve our understanding of gene duplications as a mechanism of adaptation and its relevance to the long-term persistence of gene duplications. acknowledgement: The work was supported by a Plan Nacional grant no. BFU2009-09271 from the Spanish Ministry of Science and Innovation. The author is a European Molecular Biology Organization Young Investigator and Howard Hughes Medical Institute International Early Career Scientist. author: - first_name: Fyodor full_name: Fyodor Kondrashov id: 44FDEF62-F248-11E8-B48F-1D18A9856A87 last_name: Kondrashov orcid: 0000-0001-8243-4694 citation: ama: Kondrashov F. Gene duplication as a mechanism of genomic adaptation to a changing environment. Proceedings of the Royal Society of London Series B Biological Sciences. 2012;279(1749):5048-5057. doi:10.1098/rspb.2012.1108 apa: Kondrashov, F. (2012). Gene duplication as a mechanism of genomic adaptation to a changing environment. Proceedings of the Royal Society of London Series B Biological Sciences. Royal Society, The. https://doi.org/10.1098/rspb.2012.1108 chicago: Kondrashov, Fyodor. “Gene Duplication as a Mechanism of Genomic Adaptation to a Changing Environment.” Proceedings of the Royal Society of London Series B Biological Sciences. Royal Society, The, 2012. https://doi.org/10.1098/rspb.2012.1108. ieee: F. Kondrashov, “Gene duplication as a mechanism of genomic adaptation to a changing environment,” Proceedings of the Royal Society of London Series B Biological Sciences, vol. 279, no. 1749. Royal Society, The, pp. 5048–5057, 2012. ista: Kondrashov F. 2012. Gene duplication as a mechanism of genomic adaptation to a changing environment. Proceedings of the Royal Society of London Series B Biological Sciences. 279(1749), 5048–5057. mla: Kondrashov, Fyodor. “Gene Duplication as a Mechanism of Genomic Adaptation to a Changing Environment.” Proceedings of the Royal Society of London Series B Biological Sciences, vol. 279, no. 1749, Royal Society, The, 2012, pp. 5048–57, doi:10.1098/rspb.2012.1108. short: F. Kondrashov, Proceedings of the Royal Society of London Series B Biological Sciences 279 (2012) 5048–5057. date_created: 2018-12-11T11:49:01Z date_published: 2012-01-01T00:00:00Z date_updated: 2021-01-12T08:21:16Z day: '01' doi: 10.1098/rspb.2012.1108 extern: 1 intvolume: ' 279' issue: '1749' month: '01' page: 5048 - 5057 publication: Proceedings of the Royal Society of London Series B Biological Sciences publication_status: published publisher: Royal Society, The publist_id: '6765' quality_controlled: 0 status: public title: Gene duplication as a mechanism of genomic adaptation to a changing environment tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article volume: 279 year: '2012' ... --- _id: '9049' abstract: - lang: eng text: 'Diffusiophoretic motion of colloids and macromolecules under salt gradients exhibits a logarithmic-sensing, i.e. the particle velocity is proportional to the spatial gradient of the logarithm of the salt concentration, as VDP = DDP∇logc. Here we explore experimentally the implications of this log-sensing behavior, on the basis of a hydrogel microfluidic device allowing to build spatially and temporally controlled gradients. We first demonstrate that the non-linearity of the salt-taxis leads to a trapping of particles under concentration gradient oscillations via a rectification of the motion. As an alternative, we make use of the high sensitivity of diffusiophoretic migration to vanishing salt concentration due to the log-sensing: in a counter-intuitive way, a vanishing gradient can lead to measurable velocity provided that the solute concentration is low enough, thus keeping ∇c/c finite. We show that this leads to a strong segregation of particles in osmotic shock configuration, resulting from a step change of the salt concentration at the boundaries. These various phenomena are rationalized on the basis of a theoretical description for the time-dependent Smoluchowski equation for the colloidal density.' article_processing_charge: No article_type: original author: - first_name: Jérémie A full_name: Palacci, Jérémie A id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d last_name: Palacci orcid: 0000-0002-7253-9465 - first_name: Cécile full_name: Cottin-Bizonne, Cécile last_name: Cottin-Bizonne - first_name: Christophe full_name: Ybert, Christophe last_name: Ybert - first_name: Lydéric full_name: Bocquet, Lydéric last_name: Bocquet citation: ama: Palacci JA, Cottin-Bizonne C, Ybert C, Bocquet L. Osmotic traps for colloids and macromolecules based on logarithmic sensing in salt taxis. Soft Matter. 2012;8(4):980-994. doi:10.1039/c1sm06395b apa: Palacci, J. A., Cottin-Bizonne, C., Ybert, C., & Bocquet, L. (2012). Osmotic traps for colloids and macromolecules based on logarithmic sensing in salt taxis. Soft Matter. Royal Society of Chemistry. https://doi.org/10.1039/c1sm06395b chicago: Palacci, Jérémie A, Cécile Cottin-Bizonne, Christophe Ybert, and Lydéric Bocquet. “Osmotic Traps for Colloids and Macromolecules Based on Logarithmic Sensing in Salt Taxis.” Soft Matter. Royal Society of Chemistry, 2012. https://doi.org/10.1039/c1sm06395b. ieee: J. A. Palacci, C. Cottin-Bizonne, C. Ybert, and L. Bocquet, “Osmotic traps for colloids and macromolecules based on logarithmic sensing in salt taxis,” Soft Matter, vol. 8, no. 4. Royal Society of Chemistry, pp. 980–994, 2012. ista: Palacci JA, Cottin-Bizonne C, Ybert C, Bocquet L. 2012. Osmotic traps for colloids and macromolecules based on logarithmic sensing in salt taxis. Soft Matter. 8(4), 980–994. mla: Palacci, Jérémie A., et al. “Osmotic Traps for Colloids and Macromolecules Based on Logarithmic Sensing in Salt Taxis.” Soft Matter, vol. 8, no. 4, Royal Society of Chemistry, 2012, pp. 980–94, doi:10.1039/c1sm06395b. short: J.A. Palacci, C. Cottin-Bizonne, C. Ybert, L. Bocquet, Soft Matter 8 (2012) 980–994. date_created: 2021-02-01T13:43:10Z date_published: 2012-01-28T00:00:00Z date_updated: 2023-02-23T13:47:31Z day: '28' doi: 10.1039/c1sm06395b extern: '1' intvolume: ' 8' issue: '4' language: - iso: eng month: '01' oa_version: None page: 980-994 publication: Soft Matter publication_identifier: eissn: - 1744-6848 issn: - 1744-683X publication_status: published publisher: Royal Society of Chemistry quality_controlled: '1' scopus_import: '1' status: public title: Osmotic traps for colloids and macromolecules based on logarithmic sensing in salt taxis type: journal_article user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425 volume: 8 year: '2012' ... --- _id: '922' abstract: - lang: eng text: 'We study theoretically the morphologies of biological tubes affected by various pathologies. When epithelial cells grow, the negative tension produced by their division provokes a buckling instability. Several shapes are investigated: varicose, dilated, sinuous, or sausagelike. They are all found in pathologies of tracheal, renal tubes, or arteries. The final shape depends crucially on the mechanical parameters of the tissues: Young''s modulus, wall-to-lumen ratio, homeostatic pressure. We argue that since tissues must be in quasistatic mechanical equilibrium, abnormal shapes convey information as to what causes the pathology. We calculate a phase diagram of tubular instabilities which could be a helpful guide for investigating the underlying genetic regulation.' article_processing_charge: No author: - first_name: Edouard B full_name: Hannezo, Edouard B id: 3A9DB764-F248-11E8-B48F-1D18A9856A87 last_name: Hannezo orcid: 0000-0001-6005-1561 - first_name: Jacques full_name: Prost, Jacques last_name: Prost - first_name: Jean full_name: Joanny, Jean last_name: Joanny citation: ama: Hannezo EB, Prost J, Joanny J. Mechanical instabilities of biological tubes. Physical Review Letters. 2012;109(1). doi:10.1103/PhysRevLett.109.018101 apa: Hannezo, E. B., Prost, J., & Joanny, J. (2012). Mechanical instabilities of biological tubes. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.109.018101 chicago: Hannezo, Edouard B, Jacques Prost, and Jean Joanny. “Mechanical Instabilities of Biological Tubes.” Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/PhysRevLett.109.018101. ieee: E. B. Hannezo, J. Prost, and J. Joanny, “Mechanical instabilities of biological tubes,” Physical Review Letters, vol. 109, no. 1. American Physical Society, 2012. ista: Hannezo EB, Prost J, Joanny J. 2012. Mechanical instabilities of biological tubes. Physical Review Letters. 109(1). mla: Hannezo, Edouard B., et al. “Mechanical Instabilities of Biological Tubes.” Physical Review Letters, vol. 109, no. 1, American Physical Society, 2012, doi:10.1103/PhysRevLett.109.018101. short: E.B. Hannezo, J. Prost, J. Joanny, Physical Review Letters 109 (2012). date_created: 2018-12-11T11:49:13Z date_published: 2012-07-03T00:00:00Z date_updated: 2021-01-12T08:21:56Z day: '03' doi: 10.1103/PhysRevLett.109.018101 extern: '1' external_id: arxiv: - '1207.1516' intvolume: ' 109' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1207.1516 month: '07' oa: 1 oa_version: Preprint publication: Physical Review Letters publication_status: published publisher: American Physical Society publist_id: '6519' status: public title: Mechanical instabilities of biological tubes type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 109 year: '2012' ... --- _id: '9499' abstract: - lang: eng text: EMBRYONIC FLOWER1 (EMF1) is a plant-specific gene crucial to Arabidopsis vegetative development. Loss of function mutants in the EMF1 gene mimic the phenotype caused by mutations in Polycomb Group protein (PcG) genes, which encode epigenetic repressors that regulate many aspects of eukaryotic development. In Arabidopsis, Polycomb Repressor Complex 2 (PRC2), made of PcG proteins, catalyzes trimethylation of lysine 27 on histone H3 (H3K27me3) and PRC1-like proteins catalyze H2AK119 ubiquitination. Despite functional similarity to PcG proteins, EMF1 lacks sequence homology with known PcG proteins; thus, its role in the PcG mechanism is unclear. To study the EMF1 functions and its mechanism of action, we performed genome-wide mapping of EMF1 binding and H3K27me3 modification sites in Arabidopsis seedlings. The EMF1 binding pattern is similar to that of H3K27me3 modification on the chromosomal and genic level. ChIPOTLe peak finding and clustering analyses both show that the highly trimethylated genes also have high enrichment levels of EMF1 binding, termed EMF1_K27 genes. EMF1 interacts with regulatory genes, which are silenced to allow vegetative growth, and with genes specifying cell fates during growth and differentiation. H3K27me3 marks not only these genes but also some genes that are involved in endosperm development and maternal effects. Transcriptome analysis, coupled with the H3K27me3 pattern, of EMF1_K27 genes in emf1 and PRC2 mutants showed that EMF1 represses gene activities via diverse mechanisms and plays a novel role in the PcG mechanism. article_number: e1002512 article_processing_charge: No article_type: original author: - first_name: Sang Yeol full_name: Kim, Sang Yeol last_name: Kim - first_name: Jungeun full_name: Lee, Jungeun last_name: Lee - first_name: Leor full_name: Eshed-Williams, Leor last_name: Eshed-Williams - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 - first_name: Z. Renee full_name: Sung, Z. Renee last_name: Sung citation: ama: Kim SY, Lee J, Eshed-Williams L, Zilberman D, Sung ZR. EMF1 and PRC2 cooperate to repress key regulators of Arabidopsis development. PLoS Genetics. 2012;8(3). doi:10.1371/journal.pgen.1002512 apa: Kim, S. Y., Lee, J., Eshed-Williams, L., Zilberman, D., & Sung, Z. R. (2012). EMF1 and PRC2 cooperate to repress key regulators of Arabidopsis development. PLoS Genetics. Public Library of Science. https://doi.org/10.1371/journal.pgen.1002512 chicago: Kim, Sang Yeol, Jungeun Lee, Leor Eshed-Williams, Daniel Zilberman, and Z. Renee Sung. “EMF1 and PRC2 Cooperate to Repress Key Regulators of Arabidopsis Development.” PLoS Genetics. Public Library of Science, 2012. https://doi.org/10.1371/journal.pgen.1002512. ieee: S. Y. Kim, J. Lee, L. Eshed-Williams, D. Zilberman, and Z. R. Sung, “EMF1 and PRC2 cooperate to repress key regulators of Arabidopsis development,” PLoS Genetics, vol. 8, no. 3. Public Library of Science, 2012. ista: Kim SY, Lee J, Eshed-Williams L, Zilberman D, Sung ZR. 2012. EMF1 and PRC2 cooperate to repress key regulators of Arabidopsis development. PLoS Genetics. 8(3), e1002512. mla: Kim, Sang Yeol, et al. “EMF1 and PRC2 Cooperate to Repress Key Regulators of Arabidopsis Development.” PLoS Genetics, vol. 8, no. 3, e1002512, Public Library of Science, 2012, doi:10.1371/journal.pgen.1002512. short: S.Y. Kim, J. Lee, L. Eshed-Williams, D. Zilberman, Z.R. Sung, PLoS Genetics 8 (2012). date_created: 2021-06-07T11:07:56Z date_published: 2012-03-22T00:00:00Z date_updated: 2021-12-14T08:31:14Z day: '22' department: - _id: DaZi doi: 10.1371/journal.pgen.1002512 extern: '1' external_id: pmid: - '22457632' intvolume: ' 8' issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1371/journal.pgen.1002512 month: '03' oa: 1 oa_version: Published Version pmid: 1 publication: PLoS Genetics publication_identifier: eissn: - 1553-7404 issn: - 1553-7390 publication_status: published publisher: Public Library of Science quality_controlled: '1' scopus_import: '1' status: public title: EMF1 and PRC2 cooperate to repress key regulators of Arabidopsis development type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 8 year: '2012' ... --- _id: '9497' abstract: - lang: eng text: The regulation of eukaryotic chromatin relies on interactions between many epigenetic factors, including histone modifications, DNA methylation, and the incorporation of histone variants. H2A.Z, one of the most conserved but enigmatic histone variants that is enriched at the transcriptional start sites of genes, has been implicated in a variety of chromosomal processes. Recently, we reported a genome-wide anticorrelation between H2A.Z and DNA methylation, an epigenetic hallmark of heterochromatin that has also been found in the bodies of active genes in plants and animals. Here, we investigate the basis of this anticorrelation using a novel h2a.z loss-of-function line in Arabidopsis thaliana. Through genome-wide bisulfite sequencing, we demonstrate that loss of H2A.Z in Arabidopsis has only a minor effect on the level or profile of DNA methylation in genes, and we propose that the global anticorrelation between DNA methylation and H2A.Z is primarily caused by the exclusion of H2A.Z from methylated DNA. RNA sequencing and genomic mapping of H2A.Z show that H2A.Z enrichment across gene bodies, rather than at the TSS, is correlated with lower transcription levels and higher measures of gene responsiveness. Loss of H2A.Z causes misregulation of many genes that are disproportionately associated with response to environmental and developmental stimuli. We propose that H2A.Z deposition in gene bodies promotes variability in levels and patterns of gene expression, and that a major function of genic DNA methylation is to exclude H2A.Z from constitutively expressed genes. article_number: e1002988 article_processing_charge: No article_type: original author: - first_name: Devin full_name: Coleman-Derr, Devin last_name: Coleman-Derr - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 citation: ama: Coleman-Derr D, Zilberman D. Deposition of histone variant H2A.Z within gene bodies regulates responsive genes. PLoS Genetics. 2012;8(10). doi:10.1371/journal.pgen.1002988 apa: Coleman-Derr, D., & Zilberman, D. (2012). Deposition of histone variant H2A.Z within gene bodies regulates responsive genes. PLoS Genetics. Public Library of Science. https://doi.org/10.1371/journal.pgen.1002988 chicago: Coleman-Derr, Devin, and Daniel Zilberman. “Deposition of Histone Variant H2A.Z within Gene Bodies Regulates Responsive Genes.” PLoS Genetics. Public Library of Science, 2012. https://doi.org/10.1371/journal.pgen.1002988. ieee: D. Coleman-Derr and D. Zilberman, “Deposition of histone variant H2A.Z within gene bodies regulates responsive genes,” PLoS Genetics, vol. 8, no. 10. Public Library of Science, 2012. ista: Coleman-Derr D, Zilberman D. 2012. Deposition of histone variant H2A.Z within gene bodies regulates responsive genes. PLoS Genetics. 8(10), e1002988. mla: Coleman-Derr, Devin, and Daniel Zilberman. “Deposition of Histone Variant H2A.Z within Gene Bodies Regulates Responsive Genes.” PLoS Genetics, vol. 8, no. 10, e1002988, Public Library of Science, 2012, doi:10.1371/journal.pgen.1002988. short: D. Coleman-Derr, D. Zilberman, PLoS Genetics 8 (2012). date_created: 2021-06-07T10:55:27Z date_published: 2012-10-11T00:00:00Z date_updated: 2021-12-14T08:29:57Z day: '11' department: - _id: DaZi doi: 10.1371/journal.pgen.1002988 extern: '1' external_id: pmid: - '23071449' intvolume: ' 8' issue: '10' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1371/journal.pgen.1002988 month: '10' oa: 1 oa_version: Published Version pmid: 1 publication: PLoS Genetics publication_identifier: eissn: - 1553-7404 issn: - 1553-7390 publication_status: published publisher: Public Library of Science quality_controlled: '1' scopus_import: '1' status: public title: Deposition of histone variant H2A.Z within gene bodies regulates responsive genes type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 8 year: '2012' ... --- _id: '9528' abstract: - lang: eng text: Accumulating evidence points toward diverse functions for plant chromatin. Remarkable progress has been made over the last few years in elucidating the mechanisms for a number of these functions. Activity of the histone demethylase IBM1 accurately targets DNA methylation to silent repeats and transposable elements, not to genes. A genetic screen uncovered the surprising role of H2A.Z-containing nucleosomes in sensing precise differences in ambient temperature and consequent gene regulation. Precise maintenance of chromosome number is assured by a histone modification that suppresses inappropriate DNA replication and by centromeric histone H3 regulation of chromosome segregation. Histones and noncoding RNAs regulate FLOWERING LOCUS C, the expression of which quantitatively measures the duration of cold exposure, functioning as memory of winter. These findings are a testament to the power of using plants to research chromatin organization, and demonstrate examples of how chromatin functions to achieve biological accuracy, precision, and memory. article_processing_charge: No article_type: review author: - first_name: Jason T. full_name: Huff, Jason T. last_name: Huff - first_name: Daniel full_name: Zilberman, Daniel id: 6973db13-dd5f-11ea-814e-b3e5455e9ed1 last_name: Zilberman orcid: 0000-0002-0123-8649 citation: ama: Huff JT, Zilberman D. Regulation of biological accuracy, precision, and memory by plant chromatin organization. Current Opinion in Genetics and Development. 2012;22(2):132-138. doi:10.1016/j.gde.2012.01.007 apa: Huff, J. T., & Zilberman, D. (2012). Regulation of biological accuracy, precision, and memory by plant chromatin organization. Current Opinion in Genetics and Development. Elsevier. https://doi.org/10.1016/j.gde.2012.01.007 chicago: Huff, Jason T., and Daniel Zilberman. “Regulation of Biological Accuracy, Precision, and Memory by Plant Chromatin Organization.” Current Opinion in Genetics and Development. Elsevier, 2012. https://doi.org/10.1016/j.gde.2012.01.007. ieee: J. T. Huff and D. Zilberman, “Regulation of biological accuracy, precision, and memory by plant chromatin organization,” Current Opinion in Genetics and Development, vol. 22, no. 2. Elsevier, pp. 132–138, 2012. ista: Huff JT, Zilberman D. 2012. Regulation of biological accuracy, precision, and memory by plant chromatin organization. Current Opinion in Genetics and Development. 22(2), 132–138. mla: Huff, Jason T., and Daniel Zilberman. “Regulation of Biological Accuracy, Precision, and Memory by Plant Chromatin Organization.” Current Opinion in Genetics and Development, vol. 22, no. 2, Elsevier, 2012, pp. 132–38, doi:10.1016/j.gde.2012.01.007. short: J.T. Huff, D. Zilberman, Current Opinion in Genetics and Development 22 (2012) 132–138. date_created: 2021-06-08T08:58:52Z date_published: 2012-04-01T00:00:00Z date_updated: 2021-12-14T08:32:38Z department: - _id: DaZi doi: 10.1016/j.gde.2012.01.007 extern: '1' external_id: pmid: - '22336527' intvolume: ' 22' issue: '2' language: - iso: eng month: '04' oa_version: None page: 132-138 pmid: 1 publication: Current Opinion in Genetics and Development publication_identifier: issn: - 0959-437X publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Regulation of biological accuracy, precision, and memory by plant chromatin organization type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 22 year: '2012' ... --- _id: '966' abstract: - lang: eng text: Motivated by recent experiments on Ba3NiSb2O 9, we investigate possible quantum spin liquid ground states for spin S=1 Heisenberg models on the triangular lattice. We use variational Monte Carlo techniques to calculate the energies of microscopic spin liquid wave functions where spin is represented by three flavors of fermionic spinon operators. These energies are compared with the energies of various competing three-sublattice ordered states. Our approach shows that the antiferromagnetic Heisenberg model with biquadratic term and single-ion anisotropy does not have a low-temperature spin liquid phase. However, for an SU(3)-invariant model with sufficiently strong ring-exchange terms, we find a paired chiral quantum spin liquid with a Fermi surface of deconfined spinons that is stable against all types of ordering patterns we considered. We discuss the physics of this exotic spin liquid state in relation to the recent experiment and suggest new ways to test this scenario. acknowledgement: We thank Kuang-Ting Chen, Rebecca Flint, Dmitri Ivanov, Z.-X. Liu, Tai-Kai Ng, Lara Thompson, Tamás Tóth, and Fa Wang for helpful discussions. T.S. is supported by NSF DMR 1005434. P.A.L. is supported by NSF DMR 1104498. S.B. acknowledges support from the Swiss National Science Foundation (SNSF). author: - first_name: Samuel full_name: Bieri, Samuel last_name: Bieri - first_name: Maksym full_name: Maksym Serbyn id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 - first_name: Todadri full_name: Senthil, Todadri S last_name: Senthil - first_name: Patrick full_name: Lee, Patrick last_name: Lee citation: ama: Bieri S, Serbyn M, Senthil T, Lee P. Paired chiral spin liquid with a Fermi surface in S=1 model on the triangular lattice. Physical Review B - Condensed Matter and Materials Physics. 2012;86(22). doi:10.1103/PhysRevB.86.224409 apa: Bieri, S., Serbyn, M., Senthil, T., & Lee, P. (2012). Paired chiral spin liquid with a Fermi surface in S=1 model on the triangular lattice. Physical Review B - Condensed Matter and Materials Physics. American Physical Society. https://doi.org/10.1103/PhysRevB.86.224409 chicago: Bieri, Samuel, Maksym Serbyn, Todadri Senthil, and Patrick Lee. “Paired Chiral Spin Liquid with a Fermi Surface in S=1 Model on the Triangular Lattice.” Physical Review B - Condensed Matter and Materials Physics. American Physical Society, 2012. https://doi.org/10.1103/PhysRevB.86.224409. ieee: S. Bieri, M. Serbyn, T. Senthil, and P. Lee, “Paired chiral spin liquid with a Fermi surface in S=1 model on the triangular lattice,” Physical Review B - Condensed Matter and Materials Physics, vol. 86, no. 22. American Physical Society, 2012. ista: Bieri S, Serbyn M, Senthil T, Lee P. 2012. Paired chiral spin liquid with a Fermi surface in S=1 model on the triangular lattice. Physical Review B - Condensed Matter and Materials Physics. 86(22). mla: Bieri, Samuel, et al. “Paired Chiral Spin Liquid with a Fermi Surface in S=1 Model on the Triangular Lattice.” Physical Review B - Condensed Matter and Materials Physics, vol. 86, no. 22, American Physical Society, 2012, doi:10.1103/PhysRevB.86.224409. short: S. Bieri, M. Serbyn, T. Senthil, P. Lee, Physical Review B - Condensed Matter and Materials Physics 86 (2012). date_created: 2018-12-11T11:49:27Z date_published: 2012-12-13T00:00:00Z date_updated: 2021-01-12T08:22:18Z day: '13' doi: 10.1103/PhysRevB.86.224409 extern: 1 intvolume: ' 86' issue: '22' main_file_link: - open_access: '1' url: https://arxiv.org/abs/1208.3231 month: '12' oa: 1 publication: Physical Review B - Condensed Matter and Materials Physics publication_status: published publisher: American Physical Society publist_id: '6431' quality_controlled: 0 status: public title: Paired chiral spin liquid with a Fermi surface in S=1 model on the triangular lattice type: journal_article volume: 86 year: '2012' ... --- _id: '2968' abstract: - lang: eng text: Little is known about the stability of trophic relationships in complex natural communities over evolutionary timescales. Here, we use sequence data from 18 nuclear loci to reconstruct and compare the intraspecific histories of major Pleistocene refugial populations in the Middle East, the Balkans and Iberia in a guild of four Chalcid parasitoids (Cecidostiba fungosa, Cecidostiba semifascia, Hobbya stenonota and Mesopolobus amaenus) all attacking Cynipid oak galls. We develop a likelihood method to numerically estimate models of divergence between three populations from multilocus data. We investigate the power of this framework on simulated data, and-using triplet alignments of intronic loci-quantify the support for all possible divergence relationships between refugial populations in the four parasitoids. Although an East to West order of population divergence has highest support in all but one species, we cannot rule out alternative population tree topologies. Comparing the estimated times of population splits between species, we find that one species, M. amaenus, has a significantly older history than the rest of the guild and must have arrived in central Europe at least one glacial cycle prior to other guild members. This suggests that although all four species may share a common origin in the East, they expanded westwards into Europe at different times. © 2012 Blackwell Publishing Ltd. acknowledgement: "This work was supported by funding from the UK Natural Environment Research Council to KL (NE/I020288/1) and GS (NE/H000038/1, NE/E014453/1, NER/B/504406/1, NER/B/S2003/00856) and a grant from the European Research Council (250152) to NB.\r\nWe thank Majide Tavakoli, Juli Pujade-Villar and Pablo-Fuentes Utrilla for contributing specimens. Mike Hickerson and three anonymous reviewers gave helpful comments on earlier versions of the manuscript. " author: - first_name: Konrad full_name: Lohse, Konrad last_name: Lohse - first_name: Nicholas H full_name: Barton, Nicholas H id: 4880FE40-F248-11E8-B48F-1D18A9856A87 last_name: Barton orcid: 0000-0002-8548-5240 - first_name: George full_name: Melika, George last_name: Melika - first_name: Graham full_name: Stone, Graham last_name: Stone citation: ama: Lohse K, Barton NH, Melika G, Stone G. A likelihood based comparison of population histories in a parasitoid guild. Molecular Ecology. 2012;21(18):4605-4617. doi:10.1111/j.1365-294X.2012.05700.x apa: Lohse, K., Barton, N. H., Melika, G., & Stone, G. (2012). A likelihood based comparison of population histories in a parasitoid guild. Molecular Ecology. Wiley-Blackwell. https://doi.org/10.1111/j.1365-294X.2012.05700.x chicago: Lohse, Konrad, Nicholas H Barton, George Melika, and Graham Stone. “A Likelihood Based Comparison of Population Histories in a Parasitoid Guild.” Molecular Ecology. Wiley-Blackwell, 2012. https://doi.org/10.1111/j.1365-294X.2012.05700.x. ieee: K. Lohse, N. H. Barton, G. Melika, and G. Stone, “A likelihood based comparison of population histories in a parasitoid guild,” Molecular Ecology, vol. 21, no. 18. Wiley-Blackwell, pp. 4605–4617, 2012. ista: Lohse K, Barton NH, Melika G, Stone G. 2012. A likelihood based comparison of population histories in a parasitoid guild. Molecular Ecology. 21(18), 4605–4617. mla: Lohse, Konrad, et al. “A Likelihood Based Comparison of Population Histories in a Parasitoid Guild.” Molecular Ecology, vol. 21, no. 18, Wiley-Blackwell, 2012, pp. 4605–17, doi:10.1111/j.1365-294X.2012.05700.x. short: K. Lohse, N.H. Barton, G. Melika, G. Stone, Molecular Ecology 21 (2012) 4605–4617. date_created: 2018-12-11T12:00:36Z date_published: 2012-09-01T00:00:00Z date_updated: 2023-05-30T13:07:47Z day: '01' ddc: - '570' - '579' department: - _id: NiBa doi: 10.1111/j.1365-294X.2012.05700.x ec_funded: 1 file: - access_level: open_access checksum: c14ee4cb2a8ba9575bfd8a9bb7a883bb content_type: application/pdf creator: system date_created: 2018-12-12T10:17:47Z date_updated: 2020-07-14T12:45:57Z file_id: '5304' file_name: IST-2014-296-v1+1_4_wasps_revised3.pdf file_size: 235820 relation: main_file - access_level: open_access checksum: f00afc5b887c8222014b57375b8caece content_type: application/pdf creator: system date_created: 2018-12-12T10:17:48Z date_updated: 2020-07-14T12:45:57Z file_id: '5305' file_name: IST-2014-296-v1+2_4_wasps_Supporting2.pdf file_size: 41975 relation: main_file file_date_updated: 2020-07-14T12:45:57Z has_accepted_license: '1' intvolume: ' 21' issue: '18' language: - iso: eng month: '09' oa: 1 oa_version: Submitted Version page: 4605 - 4617 project: - _id: 25B07788-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '250152' name: Limits to selection in biology and in evolutionary computation publication: Molecular Ecology publication_status: published publisher: Wiley-Blackwell publist_id: '3746' pubrep_id: '296' quality_controlled: '1' related_material: record: - id: '13075' relation: research_data status: public scopus_import: 1 status: public title: A likelihood based comparison of population histories in a parasitoid guild type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 21 year: '2012' ... --- _id: '13075' abstract: - lang: eng text: Little is known about the stability of trophic relationships in complex natural communities over evolutionary timescales. Here, we use sequence data from 18 nuclear loci to reconstruct and compare the intraspecific histories of major Pleistocene refugial populations in the Middle East, the Balkans and Iberia in a guild of four Chalcid parasitoids (Cecidostiba fungosa, C. semifascia, Hobbya stenonota and Mesopolobus amaenus) all attacking Cynipid oak galls. We develop a likelihood method to numerically estimate models of divergence between three populations from multilocus data. We investigate the power of this framework on simulated data, and - using triplet alignments of intronic loci - quantify the support for all possible divergence relationships between refugial populations in the four parasitoids. Although an East to West order of population divergence has highest support in all but one species, we cannot rule out alternative population tree topologies. Comparing the estimated times of population splits between species, we find that one species, M. amaenus, has a significantly older history than the rest of the guild and must have arrived in central Europe at least one glacial cycle prior to other guild members. This suggests that although all four species may share a common origin in the East, they expanded westwards into Europe at different times. article_processing_charge: No author: - first_name: Konrad full_name: Lohse, Konrad last_name: Lohse - first_name: Nicholas H full_name: Barton, Nicholas H id: 4880FE40-F248-11E8-B48F-1D18A9856A87 last_name: Barton orcid: 0000-0002-8548-5240 - first_name: Graham full_name: Stone, Graham last_name: Stone - first_name: George full_name: Melika, George last_name: Melika citation: ama: 'Lohse K, Barton NH, Stone G, Melika G. Data from: A likelihood-based comparison of population histories in a parasitoid guild. 2012. doi:10.5061/DRYAD.0G0FS' apa: 'Lohse, K., Barton, N. H., Stone, G., & Melika, G. (2012). Data from: A likelihood-based comparison of population histories in a parasitoid guild. Dryad. https://doi.org/10.5061/DRYAD.0G0FS' chicago: 'Lohse, Konrad, Nicholas H Barton, Graham Stone, and George Melika. “Data from: A Likelihood-Based Comparison of Population Histories in a Parasitoid Guild.” Dryad, 2012. https://doi.org/10.5061/DRYAD.0G0FS.' ieee: 'K. Lohse, N. H. Barton, G. Stone, and G. Melika, “Data from: A likelihood-based comparison of population histories in a parasitoid guild.” Dryad, 2012.' ista: 'Lohse K, Barton NH, Stone G, Melika G. 2012. Data from: A likelihood-based comparison of population histories in a parasitoid guild, Dryad, 10.5061/DRYAD.0G0FS.' mla: 'Lohse, Konrad, et al. Data from: A Likelihood-Based Comparison of Population Histories in a Parasitoid Guild. Dryad, 2012, doi:10.5061/DRYAD.0G0FS.' short: K. Lohse, N.H. Barton, G. Stone, G. Melika, (2012). date_created: 2023-05-23T17:01:02Z date_published: 2012-06-08T00:00:00Z date_updated: 2023-05-30T13:07:48Z day: '08' ddc: - '570' department: - _id: NiBa doi: 10.5061/DRYAD.0G0FS license: https://creativecommons.org/publicdomain/zero/1.0/ main_file_link: - open_access: '1' url: https://doi.org/10.5061/dryad.0g0fs month: '06' oa: 1 oa_version: Published Version publisher: Dryad related_material: record: - id: '2968' relation: used_in_publication status: public status: public title: 'Data from: A likelihood-based comparison of population histories in a parasitoid guild' tmp: image: /images/cc_0.png legal_code_url: https://creativecommons.org/publicdomain/zero/1.0/legalcode name: Creative Commons Public Domain Dedication (CC0 1.0) short: CC0 (1.0) type: research_data_reference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2012' ...