--- _id: '428' abstract: - lang: eng text: The plant hormone gibberellic acid (GA) is a crucial regulator of growth and development. The main paradigm of GA signaling puts forward transcriptional regulation via the degradation of DELLA transcriptional repressors. GA has also been shown to regulate tropic responses by modulation of the plasma membrane incidence of PIN auxin transporters by an unclear mechanism. Here we uncovered the cellular and molecular mechanisms by which GA redirects protein trafficking and thus regulates cell surface functionality. Photoconvertible reporters revealed that GA balances the protein traffic between the vacuole degradation route and recycling back to the cell surface. Low GA levels promote vacuolar delivery and degradation of multiple cargos, including PIN proteins, whereas high GA levels promote their recycling to the plasma membrane. This GA effect requires components of the retromer complex, such as Sorting Nexin 1 (SNX1) and its interacting, microtubule (MT)-associated protein, the Cytoplasmic Linker-Associated Protein (CLASP1). Accordingly, GA regulates the subcellular distribution of SNX1 and CLASP1, and the intact MT cytoskeleton is essential for the GA effect on trafficking. This GA cellular action occurs through DELLA proteins that regulate the MT and retromer presumably via their interaction partners Prefoldins (PFDs). Our study identified a branching of the GA signaling pathway at the level of DELLA proteins, which, in parallel to regulating transcription, also target by a nontranscriptional mechanism the retromer complex acting at the intersection of the degradation and recycling trafficking routes. By this mechanism, GA can redirect receptors and transporters to the cell surface, thus coregulating multiple processes, including PIN-dependent auxin fluxes during tropic responses. acknowledgement: "We gratefully acknowledge M. Blázquez (Instituto de Biología Molecular y Celular de Plantas), M. Fendrych, C. Cuesta Moliner (Institute of Science and Technology Austria), M. Vanstraelen, M. Nowack (Center for Plant Systems Biology, Ghent), C. Luschnig (Universitat fur Bodenkultur Wien, Vienna), S. Simon (Central European Institute of Technology, Brno), C. Sommerville (Carnegie Institution for Science), and Y. Gu (Penn State University) for making available the materials used in this study;\r\n...funding from the European Research Council (ERC) under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ERC Grant Agreement 282300.\r\nCC BY NC ND" article_processing_charge: No author: - first_name: Yuliya full_name: Salanenka, Yuliya id: 46DAAE7E-F248-11E8-B48F-1D18A9856A87 last_name: Salanenka - first_name: Inge full_name: Verstraeten, Inge id: 362BF7FE-F248-11E8-B48F-1D18A9856A87 last_name: Verstraeten orcid: 0000-0001-7241-2328 - first_name: Christian full_name: Löfke, Christian last_name: Löfke - first_name: Kaori full_name: Tabata, Kaori id: 7DAAEDA4-02D0-11E9-B11A-A5A4D7DFFFD0 last_name: Tabata - first_name: Satoshi full_name: Naramoto, Satoshi last_name: Naramoto - first_name: Matous full_name: Glanc, Matous id: 1AE1EA24-02D0-11E9-9BAA-DAF4881429F2 last_name: Glanc orcid: 0000-0003-0619-7783 - first_name: Jirí full_name: Friml, Jirí id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 citation: ama: Salanenka Y, Verstraeten I, Löfke C, et al. Gibberellin DELLA signaling targets the retromer complex to redirect protein trafficking to the plasma membrane. PNAS. 2018;115(14):3716-3721. doi:10.1073/pnas.1721760115 apa: Salanenka, Y., Verstraeten, I., Löfke, C., Tabata, K., Naramoto, S., Glanc, M., & Friml, J. (2018). Gibberellin DELLA signaling targets the retromer complex to redirect protein trafficking to the plasma membrane. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1721760115 chicago: Salanenka, Yuliya, Inge Verstraeten, Christian Löfke, Kaori Tabata, Satoshi Naramoto, Matous Glanc, and Jiří Friml. “Gibberellin DELLA Signaling Targets the Retromer Complex to Redirect Protein Trafficking to the Plasma Membrane.” PNAS. National Academy of Sciences, 2018. https://doi.org/10.1073/pnas.1721760115. ieee: Y. Salanenka et al., “Gibberellin DELLA signaling targets the retromer complex to redirect protein trafficking to the plasma membrane,” PNAS, vol. 115, no. 14. National Academy of Sciences, pp. 3716–3721, 2018. ista: Salanenka Y, Verstraeten I, Löfke C, Tabata K, Naramoto S, Glanc M, Friml J. 2018. Gibberellin DELLA signaling targets the retromer complex to redirect protein trafficking to the plasma membrane. PNAS. 115(14), 3716–3721. mla: Salanenka, Yuliya, et al. “Gibberellin DELLA Signaling Targets the Retromer Complex to Redirect Protein Trafficking to the Plasma Membrane.” PNAS, vol. 115, no. 14, National Academy of Sciences, 2018, pp. 3716–21, doi:10.1073/pnas.1721760115. short: Y. Salanenka, I. Verstraeten, C. Löfke, K. Tabata, S. Naramoto, M. Glanc, J. Friml, PNAS 115 (2018) 3716–3721. date_created: 2018-12-11T11:46:25Z date_published: 2018-04-03T00:00:00Z date_updated: 2023-09-11T14:06:34Z day: '03' ddc: - '580' department: - _id: JiFr doi: 10.1073/pnas.1721760115 ec_funded: 1 external_id: isi: - '000429012500073' file: - access_level: open_access checksum: 1fcf7223fb8f99559cfa80bd6f24ce44 content_type: application/pdf creator: dernst date_created: 2018-12-17T12:30:14Z date_updated: 2020-07-14T12:46:26Z file_id: '5700' file_name: 2018_PNAS_Salanenka.pdf file_size: 1924101 relation: main_file file_date_updated: 2020-07-14T12:46:26Z has_accepted_license: '1' intvolume: ' 115' isi: 1 issue: '14' language: - iso: eng license: https://creativecommons.org/licenses/by-nc-nd/4.0/ month: '04' oa: 1 oa_version: Published Version page: ' 3716 - 3721' project: - _id: 25716A02-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '282300' name: Polarity and subcellular dynamics in plants publication: PNAS publication_status: published publisher: National Academy of Sciences publist_id: '7395' quality_controlled: '1' scopus_import: '1' status: public title: Gibberellin DELLA signaling targets the retromer complex to redirect protein trafficking to the plasma membrane tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 115 year: '2018' ...