--- _id: '799' abstract: - lang: eng text: Membrane traffic at the trans-Golgi network (TGN) is crucial for correctly distributing various membrane proteins to their destination. Polarly localized auxin efflux proteins, including PIN-FORMED1 (PIN1), are dynamically transported between the endosomes and the plasma membrane (PM) in the plant cells. The intracellular trafficking of PIN1 protein is sensitive to a fungal toxin brefeldin A (BFA), which is known to inhibit guanine-nucleotide exchange factors for ADP ribosylation factors (ARF GEFs) such as GNOM. However, the molecular details of the BFA-sensitive trafficking pathway have not been revealed fully. In a previous study, we have identified an Arabidopsis mutant BFA-visualized endocytic trafficking defective 3 (ben3) which exhibited reduced sensitivity to BFA in terms of BFA-induced intracellular PIN1 agglomeration. Here, we show that BEN3 encodes a member of BIG family ARF GEFs, BIG2. Fluorescent proteins tagged BEN3/BIG2 co-localized with markers for TGN / early endosome (EE). Inspection of conditionally induced de novo synthesized PIN1 confirmed that its secretion to the PM is BFA-sensitive and established BEN3/BIG2 as a crucial component of this BFA action at the level of TGN/EE. Furthermore, ben3 mutation alleviated BFA-induced agglomeration of another TGN-localized ARF GEF BEN1/MIN7. Taken together our results suggest that BEN3/BIG2 is an ARF GEF component, which confers BFA sensitivity to the TGN/EE in Arabidopsis. article_number: 1801-1811 article_processing_charge: No author: - first_name: Saeko full_name: Kitakura, Saeko last_name: Kitakura - first_name: Maciek full_name: Adamowski, Maciek id: 45F536D2-F248-11E8-B48F-1D18A9856A87 last_name: Adamowski orcid: 0000-0001-6463-5257 - first_name: Yuki full_name: Matsuura, Yuki last_name: Matsuura - first_name: Luca full_name: Santuari, Luca last_name: Santuari - first_name: Hirotaka full_name: Kouno, Hirotaka last_name: Kouno - first_name: Kohei full_name: Arima, Kohei last_name: Arima - first_name: Christian full_name: Hardtke, Christian last_name: Hardtke - first_name: Jirí full_name: Friml, Jirí id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Tatsuo full_name: Kakimoto, Tatsuo last_name: Kakimoto - first_name: Hirokazu full_name: Tanaka, Hirokazu last_name: Tanaka citation: ama: Kitakura S, Adamowski M, Matsuura Y, et al. BEN3/BIG2 ARF GEF is involved in brefeldin a-sensitive trafficking at the trans-Golgi network/early endosome in Arabidopsis thaliana. Plant and Cell Physiology. 2017;58(10). doi:10.1093/pcp/pcx118 apa: Kitakura, S., Adamowski, M., Matsuura, Y., Santuari, L., Kouno, H., Arima, K., … Tanaka, H. (2017). BEN3/BIG2 ARF GEF is involved in brefeldin a-sensitive trafficking at the trans-Golgi network/early endosome in Arabidopsis thaliana. Plant and Cell Physiology. Oxford University Press. https://doi.org/10.1093/pcp/pcx118 chicago: Kitakura, Saeko, Maciek Adamowski, Yuki Matsuura, Luca Santuari, Hirotaka Kouno, Kohei Arima, Christian Hardtke, Jiří Friml, Tatsuo Kakimoto, and Hirokazu Tanaka. “BEN3/BIG2 ARF GEF Is Involved in Brefeldin a-Sensitive Trafficking at the Trans-Golgi Network/Early Endosome in Arabidopsis Thaliana.” Plant and Cell Physiology. Oxford University Press, 2017. https://doi.org/10.1093/pcp/pcx118. ieee: S. Kitakura et al., “BEN3/BIG2 ARF GEF is involved in brefeldin a-sensitive trafficking at the trans-Golgi network/early endosome in Arabidopsis thaliana,” Plant and Cell Physiology, vol. 58, no. 10. Oxford University Press, 2017. ista: Kitakura S, Adamowski M, Matsuura Y, Santuari L, Kouno H, Arima K, Hardtke C, Friml J, Kakimoto T, Tanaka H. 2017. BEN3/BIG2 ARF GEF is involved in brefeldin a-sensitive trafficking at the trans-Golgi network/early endosome in Arabidopsis thaliana. Plant and Cell Physiology. 58(10), 1801–1811. mla: Kitakura, Saeko, et al. “BEN3/BIG2 ARF GEF Is Involved in Brefeldin a-Sensitive Trafficking at the Trans-Golgi Network/Early Endosome in Arabidopsis Thaliana.” Plant and Cell Physiology, vol. 58, no. 10, 1801–1811, Oxford University Press, 2017, doi:10.1093/pcp/pcx118. short: S. Kitakura, M. Adamowski, Y. Matsuura, L. Santuari, H. Kouno, K. Arima, C. Hardtke, J. Friml, T. Kakimoto, H. Tanaka, Plant and Cell Physiology 58 (2017). date_created: 2018-12-11T11:48:34Z date_published: 2017-08-21T00:00:00Z date_updated: 2023-09-27T11:00:19Z day: '21' ddc: - '581' department: - _id: JiFr doi: 10.1093/pcp/pcx118 external_id: isi: - '000413220400019' pmid: - '29016942' file: - access_level: open_access checksum: bd3e3a94d55416739cbb19624bb977f8 content_type: application/pdf creator: dernst date_created: 2019-04-17T07:52:34Z date_updated: 2020-07-14T12:48:06Z file_id: '6333' file_name: 2017_PlantCellPhysio_Kitakura.pdf file_size: 1352913 relation: main_file file_date_updated: 2020-07-14T12:48:06Z has_accepted_license: '1' intvolume: ' 58' isi: 1 issue: '10' language: - iso: eng month: '08' oa: 1 oa_version: Submitted Version pmid: 1 publication: Plant and Cell Physiology publication_identifier: issn: - '00320781' publication_status: published publisher: Oxford University Press publist_id: '6854' pubrep_id: '1009' quality_controlled: '1' scopus_import: '1' status: public title: BEN3/BIG2 ARF GEF is involved in brefeldin a-sensitive trafficking at the trans-Golgi network/early endosome in Arabidopsis thaliana type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 58 year: '2017' ... --- _id: '2223' abstract: - lang: eng text: Correct positioning of membrane proteins is an essential process in eukaryotic organisms. The plant hormone auxin is distributed through intercellular transport and triggers various cellular responses. Auxin transporters of the PIN-FORMED (PIN) family localize asymmetrically at the plasma membrane (PM) and mediate the directional transport of auxin between cells. A fungal toxin, brefeldin A (BFA), inhibits a subset of guanine nucleotide exchange factors for ADP-ribosylation factor small GTPases (ARF GEFs) including GNOM, which plays a major role in localization of PIN1 predominantly to the basal side of the PM. The Arabidopsis genome encodes 19 ARF-related putative GTPases. However, ARF components involved in PIN1 localization have been genetically poorly defined. Using a fluorescence imaging-based forward genetic approach, we identified an Arabidopsis mutant, bfa-visualized exocytic trafficking defective1 (bex1), in which PM localization of PIN1-green fluorescent protein (GFP) as well as development is hypersensitive to BFA. We found that in bex1 a member of the ARF1 gene family, ARF1A1C, was mutated. ARF1A1C localizes to the trans-Golgi network/early endosome and Golgi apparatus, acts synergistically to BEN1/MIN7 ARF GEF and is important for PIN recycling to the PM. Consistent with the developmental importance of PIN proteins, functional interference with ARF1 resulted in an impaired auxin response gradient and various developmental defects including embryonic patterning defects and growth arrest. Our results show that ARF1A1C is essential for recycling of PIN auxin transporters and for various auxin-dependent developmental processes. author: - first_name: Hirokazu full_name: Tanaka, Hirokazu last_name: Tanaka - first_name: Tomasz full_name: Nodzyński, Tomasz last_name: Nodzyński - first_name: Saeko full_name: Kitakura, Saeko last_name: Kitakura - first_name: Mugurel full_name: Feraru, Mugurel last_name: Feraru - first_name: Michiko full_name: Sasabe, Michiko last_name: Sasabe - first_name: Tomomi full_name: Ishikawa, Tomomi last_name: Ishikawa - first_name: Jürgen full_name: Kleine Vehn, Jürgen last_name: Kleine Vehn - first_name: Tatsuo full_name: Kakimoto, Tatsuo last_name: Kakimoto - first_name: Jirí full_name: Friml, Jirí id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 citation: ama: Tanaka H, Nodzyński T, Kitakura S, et al. BEX1/ARF1A1C is required for BFA-sensitive recycling of PIN auxin transporters and auxin-mediated development in arabidopsis. Plant and Cell Physiology. 2014;55(4):737-749. doi:10.1093/pcp/pct196 apa: Tanaka, H., Nodzyński, T., Kitakura, S., Feraru, M., Sasabe, M., Ishikawa, T., … Friml, J. (2014). BEX1/ARF1A1C is required for BFA-sensitive recycling of PIN auxin transporters and auxin-mediated development in arabidopsis. Plant and Cell Physiology. Oxford University Press. https://doi.org/10.1093/pcp/pct196 chicago: Tanaka, Hirokazu, Tomasz Nodzyński, Saeko Kitakura, Mugurel Feraru, Michiko Sasabe, Tomomi Ishikawa, Jürgen Kleine Vehn, Tatsuo Kakimoto, and Jiří Friml. “BEX1/ARF1A1C Is Required for BFA-Sensitive Recycling of PIN Auxin Transporters and Auxin-Mediated Development in Arabidopsis.” Plant and Cell Physiology. Oxford University Press, 2014. https://doi.org/10.1093/pcp/pct196. ieee: H. Tanaka et al., “BEX1/ARF1A1C is required for BFA-sensitive recycling of PIN auxin transporters and auxin-mediated development in arabidopsis,” Plant and Cell Physiology, vol. 55, no. 4. Oxford University Press, pp. 737–749, 2014. ista: Tanaka H, Nodzyński T, Kitakura S, Feraru M, Sasabe M, Ishikawa T, Kleine Vehn J, Kakimoto T, Friml J. 2014. BEX1/ARF1A1C is required for BFA-sensitive recycling of PIN auxin transporters and auxin-mediated development in arabidopsis. Plant and Cell Physiology. 55(4), 737–749. mla: Tanaka, Hirokazu, et al. “BEX1/ARF1A1C Is Required for BFA-Sensitive Recycling of PIN Auxin Transporters and Auxin-Mediated Development in Arabidopsis.” Plant and Cell Physiology, vol. 55, no. 4, Oxford University Press, 2014, pp. 737–49, doi:10.1093/pcp/pct196. short: H. Tanaka, T. Nodzyński, S. Kitakura, M. Feraru, M. Sasabe, T. Ishikawa, J. Kleine Vehn, T. Kakimoto, J. Friml, Plant and Cell Physiology 55 (2014) 737–749. date_created: 2018-12-11T11:56:25Z date_published: 2014-04-01T00:00:00Z date_updated: 2021-01-12T06:56:07Z day: '01' ddc: - '570' department: - _id: JiFr doi: 10.1093/pcp/pct196 ec_funded: 1 file: - access_level: open_access checksum: b781a76b32ac35a520256453c3ba9433 content_type: application/pdf creator: system date_created: 2018-12-12T10:14:25Z date_updated: 2020-07-14T12:45:34Z file_id: '5076' file_name: IST-2016-431-v1+1_Plant_Cell_Physiol-2014-Tanaka-737-49.pdf file_size: 2028111 relation: main_file file_date_updated: 2020-07-14T12:45:34Z has_accepted_license: '1' intvolume: ' 55' issue: '4' language: - iso: eng license: https://creativecommons.org/licenses/by-nc/4.0/ main_file_link: - open_access: '1' url: http://repository.ist.ac.at/id/eprint/431 month: '04' oa: 1 oa_version: Published Version page: 737 - 749 project: - _id: 25716A02-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '282300' name: Polarity and subcellular dynamics in plants - _id: 256BDAB0-B435-11E9-9278-68D0E5697425 name: Innovationsförderung in der Grenzregion Österreich – Tschechische Republik durch die Schaffung von Synergien im Bereich der Forschungsinfrastruktur publication: Plant and Cell Physiology publication_identifier: issn: - '00320781' publication_status: published publisher: Oxford University Press publist_id: '4741' pubrep_id: '431' quality_controlled: '1' scopus_import: 1 status: public title: BEX1/ARF1A1C is required for BFA-sensitive recycling of PIN auxin transporters and auxin-mediated development in arabidopsis tmp: image: /images/cc_by_nc.png legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) short: CC BY-NC (4.0) type: journal_article user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87 volume: 55 year: '2014' ... --- _id: '2222' abstract: - lang: eng text: Leaf venation develops complex patterns in angiosperms, but the mechanism underlying this process is largely unknown. To elucidate the molecular mechanisms governing vein pattern formation, we previously isolated vascular network defective (van) mutants that displayed venation discontinuities. Here, we report the phenotypic analysis of van4 mutants, and we identify and characterize the VAN4 gene. Detailed phenotypic analysis shows that van4 mutants are defective in procambium cell differentiation and subsequent vascular cell differentiation. Reduced shoot and root cell growth is observed in van4 mutants, suggesting that VAN4 function is important for cell growth and the establishment of venation continuity. Consistent with these phenotypes, the VAN4 gene is strongly expressed in vascular and meristematic cells. VAN4 encodes a putative TRS120, which is a known guanine nucleotide exchange factor (GEF) for Rab GTPase involved in regulating vesicle transport, and a known tethering factor that determines the specificity of membrane fusion. VAN4 protein localizes at the trans-Golgi network/early endosome (TGN/EE). Aberrant recycling of the auxin efflux carrier PIN proteins is observed in van4 mutants. These results suggest that VAN4-mediated exocytosis at the TGN plays important roles in plant vascular development and cell growth in shoot and root. Our identification of VAN4 as a putative TRS120 shows that Rab GTPases are crucial (in addition to ARF GTPases) for continuous vascular development, and provides further evidence for the importance of vesicle transport in leaf vascular formation. author: - first_name: Satoshi full_name: Naramoto, Satoshi last_name: Naramoto - first_name: Tomasz full_name: Nodzyński, Tomasz last_name: Nodzyński - first_name: Tomoko full_name: Dainobu, Tomoko last_name: Dainobu - first_name: Hirotomo full_name: Takatsuka, Hirotomo last_name: Takatsuka - first_name: Teruyo full_name: Okada, Teruyo last_name: Okada - first_name: Jirí full_name: Friml, Jirí id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Hiroo full_name: Fukuda, Hiroo last_name: Fukuda citation: ama: Naramoto S, Nodzyński T, Dainobu T, et al. VAN4 encodes a putative TRS120 that is required for normal cell growth and vein development in arabidopsis. Plant and Cell Physiology. 2014;55(4):750-763. doi:10.1093/pcp/pcu012 apa: Naramoto, S., Nodzyński, T., Dainobu, T., Takatsuka, H., Okada, T., Friml, J., & Fukuda, H. (2014). VAN4 encodes a putative TRS120 that is required for normal cell growth and vein development in arabidopsis. Plant and Cell Physiology. Oxford University Press. https://doi.org/10.1093/pcp/pcu012 chicago: Naramoto, Satoshi, Tomasz Nodzyński, Tomoko Dainobu, Hirotomo Takatsuka, Teruyo Okada, Jiří Friml, and Hiroo Fukuda. “VAN4 Encodes a Putative TRS120 That Is Required for Normal Cell Growth and Vein Development in Arabidopsis.” Plant and Cell Physiology. Oxford University Press, 2014. https://doi.org/10.1093/pcp/pcu012. ieee: S. Naramoto et al., “VAN4 encodes a putative TRS120 that is required for normal cell growth and vein development in arabidopsis,” Plant and Cell Physiology, vol. 55, no. 4. Oxford University Press, pp. 750–763, 2014. ista: Naramoto S, Nodzyński T, Dainobu T, Takatsuka H, Okada T, Friml J, Fukuda H. 2014. VAN4 encodes a putative TRS120 that is required for normal cell growth and vein development in arabidopsis. Plant and Cell Physiology. 55(4), 750–763. mla: Naramoto, Satoshi, et al. “VAN4 Encodes a Putative TRS120 That Is Required for Normal Cell Growth and Vein Development in Arabidopsis.” Plant and Cell Physiology, vol. 55, no. 4, Oxford University Press, 2014, pp. 750–63, doi:10.1093/pcp/pcu012. short: S. Naramoto, T. Nodzyński, T. Dainobu, H. Takatsuka, T. Okada, J. Friml, H. Fukuda, Plant and Cell Physiology 55 (2014) 750–763. date_created: 2018-12-11T11:56:24Z date_published: 2014-04-01T00:00:00Z date_updated: 2021-01-12T06:56:06Z day: '01' department: - _id: JiFr doi: 10.1093/pcp/pcu012 ec_funded: 1 intvolume: ' 55' issue: '4' language: - iso: eng month: '04' oa_version: None page: 750 - 763 project: - _id: 25716A02-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '282300' name: Polarity and subcellular dynamics in plants publication: Plant and Cell Physiology publication_identifier: issn: - '00320781' publication_status: published publisher: Oxford University Press publist_id: '4742' quality_controlled: '1' scopus_import: 1 status: public title: VAN4 encodes a putative TRS120 that is required for normal cell growth and vein development in arabidopsis type: journal_article user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87 volume: 55 year: '2014' ...