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REVOLUTA and WRKY53 connect early and late leaf development in Arabidopsis

As sessile organisms, plants have to continuously adjust growth and development to ever-changing environmental conditions. At the end of the growing season, annual plants induce leaf senescence to reallocate nutrients and energy-rich substances from the leaves to the maturing seeds. Thus, leaf senes...

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Autores principales: Xie, Yakun, Huhn, Kerstin, Brandt, Ronny, Potschin, Maren, Bieker, Stefan, Straub, Daniel, Doll, Jasmin, Drechsler, Thomas, Zentgraf, Ulrike, Wenkel, Stephan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Company of Biologists 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4299279/
https://www.ncbi.nlm.nih.gov/pubmed/25395454
http://dx.doi.org/10.1242/dev.117689
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author Xie, Yakun
Huhn, Kerstin
Brandt, Ronny
Potschin, Maren
Bieker, Stefan
Straub, Daniel
Doll, Jasmin
Drechsler, Thomas
Zentgraf, Ulrike
Wenkel, Stephan
author_facet Xie, Yakun
Huhn, Kerstin
Brandt, Ronny
Potschin, Maren
Bieker, Stefan
Straub, Daniel
Doll, Jasmin
Drechsler, Thomas
Zentgraf, Ulrike
Wenkel, Stephan
author_sort Xie, Yakun
collection PubMed
description As sessile organisms, plants have to continuously adjust growth and development to ever-changing environmental conditions. At the end of the growing season, annual plants induce leaf senescence to reallocate nutrients and energy-rich substances from the leaves to the maturing seeds. Thus, leaf senescence is a means with which to increase reproductive success and is therefore tightly coupled to the developmental age of the plant. However, senescence can also be induced in response to sub-optimal growth conditions as an exit strategy, which is accompanied by severely reduced yield. Here, we show that class III homeodomain leucine zipper (HD-ZIPIII) transcription factors, which are known to be involved in basic pattern formation, have an additional role in controlling the onset of leaf senescence in Arabidopsis. Several potential direct downstream genes of the HD-ZIPIII protein REVOLUTA (REV) have known roles in environment-controlled physiological processes. We report that REV acts as a redox-sensitive transcription factor, and directly and positively regulates the expression of WRKY53, a master regulator of age-induced leaf senescence. HD-ZIPIII proteins are required for the full induction of WRKY53 in response to oxidative stress, and mutations in HD-ZIPIII genes strongly delay the onset of senescence. Thus, a crosstalk between early and late stages of leaf development appears to contribute to reproductive success.
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spelling pubmed-42992792015-01-29 REVOLUTA and WRKY53 connect early and late leaf development in Arabidopsis Xie, Yakun Huhn, Kerstin Brandt, Ronny Potschin, Maren Bieker, Stefan Straub, Daniel Doll, Jasmin Drechsler, Thomas Zentgraf, Ulrike Wenkel, Stephan Development Research Articles As sessile organisms, plants have to continuously adjust growth and development to ever-changing environmental conditions. At the end of the growing season, annual plants induce leaf senescence to reallocate nutrients and energy-rich substances from the leaves to the maturing seeds. Thus, leaf senescence is a means with which to increase reproductive success and is therefore tightly coupled to the developmental age of the plant. However, senescence can also be induced in response to sub-optimal growth conditions as an exit strategy, which is accompanied by severely reduced yield. Here, we show that class III homeodomain leucine zipper (HD-ZIPIII) transcription factors, which are known to be involved in basic pattern formation, have an additional role in controlling the onset of leaf senescence in Arabidopsis. Several potential direct downstream genes of the HD-ZIPIII protein REVOLUTA (REV) have known roles in environment-controlled physiological processes. We report that REV acts as a redox-sensitive transcription factor, and directly and positively regulates the expression of WRKY53, a master regulator of age-induced leaf senescence. HD-ZIPIII proteins are required for the full induction of WRKY53 in response to oxidative stress, and mutations in HD-ZIPIII genes strongly delay the onset of senescence. Thus, a crosstalk between early and late stages of leaf development appears to contribute to reproductive success. The Company of Biologists 2014-12-15 /pmc/articles/PMC4299279/ /pubmed/25395454 http://dx.doi.org/10.1242/dev.117689 Text en © 2014. Published by The Company of Biologists Ltd http://creativecommons.org/licenses/by/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.
spellingShingle Research Articles
Xie, Yakun
Huhn, Kerstin
Brandt, Ronny
Potschin, Maren
Bieker, Stefan
Straub, Daniel
Doll, Jasmin
Drechsler, Thomas
Zentgraf, Ulrike
Wenkel, Stephan
REVOLUTA and WRKY53 connect early and late leaf development in Arabidopsis
title REVOLUTA and WRKY53 connect early and late leaf development in Arabidopsis
title_full REVOLUTA and WRKY53 connect early and late leaf development in Arabidopsis
title_fullStr REVOLUTA and WRKY53 connect early and late leaf development in Arabidopsis
title_full_unstemmed REVOLUTA and WRKY53 connect early and late leaf development in Arabidopsis
title_short REVOLUTA and WRKY53 connect early and late leaf development in Arabidopsis
title_sort revoluta and wrky53 connect early and late leaf development in arabidopsis
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4299279/
https://www.ncbi.nlm.nih.gov/pubmed/25395454
http://dx.doi.org/10.1242/dev.117689
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