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Dual and opposing roles of EIN3 reveal a generation conflict during seed growth
Seed size critically affects grain yield of crops and hence represents a key breeding target. The development of embryo-nourishing endosperm is a key driver of seed expansion. We here report unexpected dual roles of the transcription factor EIN3 in regulating seed size. These EIN3 functions have rem...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8837274/ https://www.ncbi.nlm.nih.gov/pubmed/34848348 http://dx.doi.org/10.1016/j.molp.2021.11.015 |
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author | Heydlauff, Juliane Erbasol Serbes, Isil Vo, Dieu Mao, Yanbo Gieseking, Sonja Nakel, Thomas Harten, Theresa Völz, Ronny Hoffmann, Anja Groß-Hardt, Rita |
author_facet | Heydlauff, Juliane Erbasol Serbes, Isil Vo, Dieu Mao, Yanbo Gieseking, Sonja Nakel, Thomas Harten, Theresa Völz, Ronny Hoffmann, Anja Groß-Hardt, Rita |
author_sort | Heydlauff, Juliane |
collection | PubMed |
description | Seed size critically affects grain yield of crops and hence represents a key breeding target. The development of embryo-nourishing endosperm is a key driver of seed expansion. We here report unexpected dual roles of the transcription factor EIN3 in regulating seed size. These EIN3 functions have remained largely undiscovered because they oppose each other. Capitalizing on the analysis of multiple ethylene biosynthesis mutants, we demonstrate that EIN3 represses endosperm and seed development in a pathway regulated by ethylene. We, in addition, provide evidence that EIN3-mediated synergid nucleus disintegration promotes endosperm expansion. Interestingly, synergid nucleus disintegration is not affected in various ethylene biosynthesis mutants, suggesting that this promoting function of EIN3 is independent of ethylene. Whereas the growth-inhibitory ethylene-dependent EIN3 action appears to be encoded by sporophytic tissue, the growth-promoting role of EIN3 is induced by fertilization, revealing a generation conflict that converges toward the key signaling component EIN3. |
format | Online Article Text |
id | pubmed-8837274 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-88372742022-02-14 Dual and opposing roles of EIN3 reveal a generation conflict during seed growth Heydlauff, Juliane Erbasol Serbes, Isil Vo, Dieu Mao, Yanbo Gieseking, Sonja Nakel, Thomas Harten, Theresa Völz, Ronny Hoffmann, Anja Groß-Hardt, Rita Mol Plant Research Report Seed size critically affects grain yield of crops and hence represents a key breeding target. The development of embryo-nourishing endosperm is a key driver of seed expansion. We here report unexpected dual roles of the transcription factor EIN3 in regulating seed size. These EIN3 functions have remained largely undiscovered because they oppose each other. Capitalizing on the analysis of multiple ethylene biosynthesis mutants, we demonstrate that EIN3 represses endosperm and seed development in a pathway regulated by ethylene. We, in addition, provide evidence that EIN3-mediated synergid nucleus disintegration promotes endosperm expansion. Interestingly, synergid nucleus disintegration is not affected in various ethylene biosynthesis mutants, suggesting that this promoting function of EIN3 is independent of ethylene. Whereas the growth-inhibitory ethylene-dependent EIN3 action appears to be encoded by sporophytic tissue, the growth-promoting role of EIN3 is induced by fertilization, revealing a generation conflict that converges toward the key signaling component EIN3. Oxford University Press 2022-02-07 /pmc/articles/PMC8837274/ /pubmed/34848348 http://dx.doi.org/10.1016/j.molp.2021.11.015 Text en © 2021 The Author https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Research Report Heydlauff, Juliane Erbasol Serbes, Isil Vo, Dieu Mao, Yanbo Gieseking, Sonja Nakel, Thomas Harten, Theresa Völz, Ronny Hoffmann, Anja Groß-Hardt, Rita Dual and opposing roles of EIN3 reveal a generation conflict during seed growth |
title | Dual and opposing roles of EIN3 reveal a generation conflict during seed growth |
title_full | Dual and opposing roles of EIN3 reveal a generation conflict during seed growth |
title_fullStr | Dual and opposing roles of EIN3 reveal a generation conflict during seed growth |
title_full_unstemmed | Dual and opposing roles of EIN3 reveal a generation conflict during seed growth |
title_short | Dual and opposing roles of EIN3 reveal a generation conflict during seed growth |
title_sort | dual and opposing roles of ein3 reveal a generation conflict during seed growth |
topic | Research Report |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8837274/ https://www.ncbi.nlm.nih.gov/pubmed/34848348 http://dx.doi.org/10.1016/j.molp.2021.11.015 |
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