MYB70 modulates seed germination and root system development in Arabidopsis

Summary: Crosstalk among ABA, auxin, and ROS plays critical roles in modulating seed germination, root growth, and suberization. However, the underlying molecular mechanisms remain largely elusive. Here, MYB70, a R2R3-MYB transcription factor was shown to be a key component of these processes in Ara...

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Autores principales:	Jinpeng Wan, Ruling Wang, Ping Zhang, Liangliang Sun, Qiong Ju, Haodong Huang, Shiyou Lü, Lam-Son Tran, Jin Xu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Biological sciences Cell biology Plant biology Plant histology Plant Genetics Science Q
Acceso en línea:	https://doaj.org/article/318f248cf8624d48ac74c865e379763b
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spelling	oai:doaj.org-article:318f248cf8624d48ac74c865e379763b2021-11-20T05:08:33ZMYB70 modulates seed germination and root system development in Arabidopsis2589-004210.1016/j.isci.2021.103228https://doaj.org/article/318f248cf8624d48ac74c865e379763b2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2589004221011962https://doaj.org/toc/2589-0042Summary: Crosstalk among ABA, auxin, and ROS plays critical roles in modulating seed germination, root growth, and suberization. However, the underlying molecular mechanisms remain largely elusive. Here, MYB70, a R2R3-MYB transcription factor was shown to be a key component of these processes in Arabidopsis thaliana. myb70 seeds displayed decreased sensitivity, while MYB70-overexpressing OX70 seeds showed increased sensitivity in germination in response to exogenous ABA through MYB70 physical interaction with ABI5 protein, leading to enhanced stabilization of ABI5. Furthermore, MYB70 modulates root system development (RSA) which is associated with increased conjugated IAA content and H2O2/O2⋅− ratio but reduced root suberin deposition, consequently affecting nutrient uptake. In support of these data, MYB70 positively regulates the expression of auxin conjugation-related GH3, while negatively peroxidase-encoding and suberin biosynthesis-related genes. Our findings collectively revealed a previously uncharacterized component that modulates ABA and auxin signaling pathways, H2O2/O2⋅− balance, and suberization, consequently regulating RSA and seed germination.Jinpeng WanRuling WangPing ZhangLiangliang SunQiong JuHaodong HuangShiyou LüLam-Son TranJin XuElsevierarticleBiological sciencesCell biologyPlant biologyPlant histologyPlant GeneticsScienceQENiScience, Vol 24, Iss 11, Pp 103228- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biological sciences Cell biology Plant biology Plant histology Plant Genetics Science Q
spellingShingle	Biological sciences Cell biology Plant biology Plant histology Plant Genetics Science Q Jinpeng Wan Ruling Wang Ping Zhang Liangliang Sun Qiong Ju Haodong Huang Shiyou Lü Lam-Son Tran Jin Xu MYB70 modulates seed germination and root system development in Arabidopsis
description	Summary: Crosstalk among ABA, auxin, and ROS plays critical roles in modulating seed germination, root growth, and suberization. However, the underlying molecular mechanisms remain largely elusive. Here, MYB70, a R2R3-MYB transcription factor was shown to be a key component of these processes in Arabidopsis thaliana. myb70 seeds displayed decreased sensitivity, while MYB70-overexpressing OX70 seeds showed increased sensitivity in germination in response to exogenous ABA through MYB70 physical interaction with ABI5 protein, leading to enhanced stabilization of ABI5. Furthermore, MYB70 modulates root system development (RSA) which is associated with increased conjugated IAA content and H2O2/O2⋅− ratio but reduced root suberin deposition, consequently affecting nutrient uptake. In support of these data, MYB70 positively regulates the expression of auxin conjugation-related GH3, while negatively peroxidase-encoding and suberin biosynthesis-related genes. Our findings collectively revealed a previously uncharacterized component that modulates ABA and auxin signaling pathways, H2O2/O2⋅− balance, and suberization, consequently regulating RSA and seed germination.
format	article
author	Jinpeng Wan Ruling Wang Ping Zhang Liangliang Sun Qiong Ju Haodong Huang Shiyou Lü Lam-Son Tran Jin Xu
author_facet	Jinpeng Wan Ruling Wang Ping Zhang Liangliang Sun Qiong Ju Haodong Huang Shiyou Lü Lam-Son Tran Jin Xu
author_sort	Jinpeng Wan
title	MYB70 modulates seed germination and root system development in Arabidopsis
title_short	MYB70 modulates seed germination and root system development in Arabidopsis
title_full	MYB70 modulates seed germination and root system development in Arabidopsis
title_fullStr	MYB70 modulates seed germination and root system development in Arabidopsis
title_full_unstemmed	MYB70 modulates seed germination and root system development in Arabidopsis
title_sort	myb70 modulates seed germination and root system development in arabidopsis
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/318f248cf8624d48ac74c865e379763b
work_keys_str_mv	AT jinpengwan myb70modulatesseedgerminationandrootsystemdevelopmentinarabidopsis AT rulingwang myb70modulatesseedgerminationandrootsystemdevelopmentinarabidopsis AT pingzhang myb70modulatesseedgerminationandrootsystemdevelopmentinarabidopsis AT liangliangsun myb70modulatesseedgerminationandrootsystemdevelopmentinarabidopsis AT qiongju myb70modulatesseedgerminationandrootsystemdevelopmentinarabidopsis AT haodonghuang myb70modulatesseedgerminationandrootsystemdevelopmentinarabidopsis AT shiyoulu myb70modulatesseedgerminationandrootsystemdevelopmentinarabidopsis AT lamsontran myb70modulatesseedgerminationandrootsystemdevelopmentinarabidopsis AT jinxu myb70modulatesseedgerminationandrootsystemdevelopmentinarabidopsis
_version_	1718419533585186816

MYB70 modulates seed germination and root system development in Arabidopsis

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