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The CEP5 Peptide Promotes Abiotic Stress Tolerance, As Revealed by Quantitative Proteomics, and Attenuates the AUX/IAA Equilibrium in Arabidopsis

Smith, Stephanie and Zhu, Shanshuo and Joos, Lisa and Roberts, Ianto and Nikonorova, Natalia and Vu, Lam Dai and Stes, Elisabeth and Cho, Hyunwoo and Larrieu, Antoine and Xuan, Wei and Goodall, Benjamin and van de Cotte, Brigitte and Waite, Jessic Marie and Rigal, Adeline and Harborough, Sigurd Ramans and Persiau, Geert and Vanneste, Steffen and Kirschner, Gwendolyn K. and Vandermarliere, Elien and Martens, Lennart and Stahl, Yvonne and Audenaert, Dominique and Friml, Jiri and Felix, Georg and Simon, Ruediger and Bennett, Malcolm J. and Bishopp, Anthony and De Jaeger, Geert and Ljung, Karin and Kepinski, Stefan and Robert, Stephanie and Nemhauser, Jennifer and Hwang, Ildoo and Gevaert, Kris and Beeckman, Tom and De Smet, Ive (2020). The CEP5 Peptide Promotes Abiotic Stress Tolerance, As Revealed by Quantitative Proteomics, and Attenuates the AUX/IAA Equilibrium in Arabidopsis. Molecular and Cellular Proteomics. 19 , 1248-1262
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Abstract

Peptides derived from non-functional precursors play important roles in various developmental processes, but also in (a)biotic stress signaling. Our (phospho)proteome-wide analyses of C-TERMINALLY ENCODED PEPTIDE 5 (CEP5)-mediated changes revealed an impact on abiotic stress-related processes. Drought has a dramatic impact on plant growth, development and reproduction, and the plant hormone auxin plays a role in drought responses. Our genetic, physiological, biochemical, and pharmacological results demonstrated that CEP5-mediated signaling is relevant for osmotic and drought stress tolerance in Arabidopsis, and that CEP5 specifically counteracts auxin effects. Specifically, we found that CEP5 signaling stabi-lizes AUX/IAA transcriptional repressors, suggesting the existence of a novel peptide-dependent control mechanism that tunes auxin signaling. These observations align with the recently described role of AUX/IAAs in stress tolerance and provide a novel role for CEP5 in osmotic and drought stress tolerance.

Authors/Creators:Smith, Stephanie and Zhu, Shanshuo and Joos, Lisa and Roberts, Ianto and Nikonorova, Natalia and Vu, Lam Dai and Stes, Elisabeth and Cho, Hyunwoo and Larrieu, Antoine and Xuan, Wei and Goodall, Benjamin and van de Cotte, Brigitte and Waite, Jessic Marie and Rigal, Adeline and Harborough, Sigurd Ramans and Persiau, Geert and Vanneste, Steffen and Kirschner, Gwendolyn K. and Vandermarliere, Elien and Martens, Lennart and Stahl, Yvonne and Audenaert, Dominique and Friml, Jiri and Felix, Georg and Simon, Ruediger and Bennett, Malcolm J. and Bishopp, Anthony and De Jaeger, Geert and Ljung, Karin and Kepinski, Stefan and Robert, Stephanie and Nemhauser, Jennifer and Hwang, Ildoo and Gevaert, Kris and Beeckman, Tom and De Smet, Ive
Title:The CEP5 Peptide Promotes Abiotic Stress Tolerance, As Revealed by Quantitative Proteomics, and Attenuates the AUX/IAA Equilibrium in Arabidopsis
Series Name/Journal:Molecular and Cellular Proteomics
Year of publishing :2020
Volume:19
Page range:1248-1262
Number of Pages:15
ISSN:1535-9476
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Biochemistry and Molecular Biology
URN:NBN:urn:nbn:se:slu:epsilon-p-106503
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-106503
Additional ID:
Type of IDID
DOI10.1074/mcp.RA119.001826
Web of Science (WoS)000561114000001
ID Code:22143
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Genetics and Plant Physiology
Deposited By: SLUpub Connector
Deposited On:08 Feb 2021 11:58
Metadata Last Modified:08 Feb 2021 12:01

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