The Chromatin-Remodeling Factor PICKLE Antagonizes Polycomb Repression of FT to Promote Flowering

doi:10.1104/pp.19.00596

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	The Chromatin-Remodeling Factor PICKLE Antagonizes Polycomb Repression of FT to Promote Flowering
	Jing, Yanjun ; Guo, Qiang 3; Lin, Rongcheng 2,3
刊名	PLANT PHYSIOLOGY
	2019
卷号	181 期号:2 页码:656-668
ISSN号	0032-0889
DOI	10.1104/pp.19.00596
文献子类	Article
英文摘要	Changing daylength (or photoperiod) is a seasonal cue used by many plants to adjust the timing of their floral transition to ensure reproductive success. An inductive long-day photoperiod triggers the expression of FLOWERING LOCUS T (FT), which promotes flowering. FT, encoding a major component of florigen, is induced in leaf veins specifically at dusk through the photoperiod pathway; however, the modulation of FT expression in response to photoperiod cues remains poorly understood. Here, we report that the balance between Polycomb group (PcG) and Trithorax group (TrxG) proteins sets appropriate FT expression in long days in Arabidopsis (Arabidopsis thaliana). In PcG mutant lines, FT was highly derepressed, but FT expression was decreased to an almost wild-type level and pattern upon the additional disruption of chromatin-remodeling factors PICKLE (PKL) and ARABIDOPSIS HOMOLOG OF TRITHORAX1 (ATX1), but not by disruption of photoperiod pathway components. PKL interacts with ATX1 to mediate trimethylation of histone H3 on lysine-4 at the FT locus, leading to antagonistic effects of PKL and ATX1 on PcG proteins in the regulation of FT expression. Therefore, the TrxG-like protein PKL prevents PcG-mediated silencing to ensure specific and appropriate expression of FT, thereby determining the proper flowering response.
学科主题	Plant Sciences
电子版国际标准刊号	1532-2548
出版地	ROCKVILLE
WOS关键词	LOCUS-T ; ARABIDOPSIS HOMOLOG ; FLORAL TRANSITION ; DISTINCT ROLES ; PROTEIN ; TRITHORAX ; CONSTANS ; GENES ; ACTS ; TIME
WOS研究方向	Plant Sciences
语种	英语
出版者	AMER SOC PLANT BIOLOGISTS
WOS记录号	WOS:000488973400023
资助机构	National Key Research and Development Program of China [2017YFA0503800] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31870288] ; Ministry of Agriculture of ChinaMinistry of Agriculture, China [2016ZX08009-003] ; Youth Innovation Promotion Association of Chinese Academy of Sciences [2015064]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19672]
专题	中科院光生物学重点实验室
作者单位	1.Chinese Acad Sci, CAS Ctr Excellence Mol Plant Sci, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Bot, Key Lab Photobiol, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Jing, Yanjun,Guo, Qiang,Lin, Rongcheng. The Chromatin-Remodeling Factor PICKLE Antagonizes Polycomb Repression of FT to Promote Flowering[J]. PLANT PHYSIOLOGY,2019,181(2):656-668.
APA	Jing, Yanjun,Guo, Qiang,&Lin, Rongcheng.(2019).The Chromatin-Remodeling Factor PICKLE Antagonizes Polycomb Repression of FT to Promote Flowering.PLANT PHYSIOLOGY,181(2),656-668.
MLA	Jing, Yanjun,et al."The Chromatin-Remodeling Factor PICKLE Antagonizes Polycomb Repression of FT to Promote Flowering".PLANT PHYSIOLOGY 181.2(2019):656-668.