气候变化领域集成服务门户(CCPortal): Light modulates the gravitropic responses through organ-specific PIFs and HY5 regulation of LAZY4 expression in Arabidopsis

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DOI	10.1073/pnas.2005871117
	Light modulates the gravitropic responses through organ-specific PIFs and HY5 regulation of LAZY4 expression in Arabidopsis
	Yang P.; Wen Q.; Yu R.; Han X.; Deng X.W.; Chen H.
发表日期	2020
ISSN	0027-8424
起始页码	18840
结束页码	18848
卷号	117 期号:31
英文摘要	Light and gravity are two key environmental factors that control plant growth and architecture. However, the molecular basis of the coordination of light and gravity signaling in plants remains obscure. Here, we report that two classes of transcription factors, PHYTOCHROME INTERACTING FACTORS (PIFs) and ELONGATED HYPOCOTYL5 (HY5), can directly bind and activate the expression of LAZY4, a positive regulator of gravitropism in both shoots and roots in Arabidopsis. In hypocotyls, light promotes degradation of PIFs to reduce LAZY4 expression, which inhibits the negative gravitropism of hypocotyls. LAZY4 overexpression can partially rescue the negative gravitropic phenotype of pifq in the dark without affecting amyloplast development. Our identification of the PIFs-LAZY4 regulatory module suggests the presence of another role for PIF proteins in gravitropism, in addition to a previous report demonstrating that PIFs positively regulate amyloplast development to promote negative gravitropism in hypocotyls. In roots, light promotes accumulation of HY5 proteins to activate expression of LAZY4, which promotes positive gravitropism in roots. Together, our data indicate that light exerts opposite regulation of LAZY4 expression in shoots and roots by mediating the protein levels of PIFs and HY5, respectively, to inhibit the negative gravitropism of shoots and promote positive gravitropism of roots in Arabidopsis. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Gravitropism; Hy5; Lazy4; Light; Pifs
语种	英语
scopus关键词	elongated hypocotyl5 protein; LAZY4 protein; phytochrome interacting factor; plant protein; unclassified drug; Arabidopsis protein; AT1G72490 protein, Arabidopsis; basic helix loop helix transcription factor; basic leucine zipper transcription factor; HY5 protein, Arabidopsis; nuclear protein; amyloplast; Arabidopsis; Article; controlled study; down regulation; gravitropism; in vivo study; light; nonhuman; phenotype; plant response; plant root; priority journal; protein degradation; protein determination; protein expression; protein protein interaction; shoot; upregulation; Arabidopsis; gene expression regulation; genetics; gravitropism; light; metabolism; radiation response; Arabidopsis; Arabidopsis Proteins; Basic Helix-Loop-Helix Transcription Factors; Basic-Leucine Zipper Transcription Factors; Gene Expression Regulation, Plant; Gravitropism; Light; Nuclear Proteins
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160240
作者单位	Yang, P., State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, School of Life Sciences, Peking University, Beijing, 100871, China; Wen, Q., State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, School of Life Sciences, Peking University, Beijing, 100871, China; Yu, R., State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, School of Life Sciences, Peking University, Beijing, 100871, China; Han, X., State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, School of Life Sciences, Peking University, Beijing, 100871, China; Deng, X.W., State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, School of Life Sciences, Peking University, Beijing, 100871, China, Department of Biology, Institute of Plant and Food Sciences, Southern University of Science and Technology, Shenzhen, 518055, China; Chen...
推荐引用方式 GB/T 7714	Yang P.,Wen Q.,Yu R.,et al. Light modulates the gravitropic responses through organ-specific PIFs and HY5 regulation of LAZY4 expression in Arabidopsis[J],2020,117(31).
APA	Yang P.,Wen Q.,Yu R.,Han X.,Deng X.W.,&Chen H..(2020).Light modulates the gravitropic responses through organ-specific PIFs and HY5 regulation of LAZY4 expression in Arabidopsis.Proceedings of the National Academy of Sciences of the United States of America,117(31).
MLA	Yang P.,et al."Light modulates the gravitropic responses through organ-specific PIFs and HY5 regulation of LAZY4 expression in Arabidopsis".Proceedings of the National Academy of Sciences of the United States of America 117.31(2020).