表观遗传修饰介导的植物胁迫记忆

doi:10.11983/CBB19137

摘要/Abstract

摘要： 植物因其固着生长的方式, 已经进化出各类特殊的机制来适应多变的外界环境。为提高自身的存活率, 植物进化出一类胁迫记忆机制, 以适应环境和保护自己。表观遗传修饰不仅能调控植物的正常生长发育, 而且参与植物对各种非生物或生物胁迫的响应。近年的研究表明, 表观遗传修饰在植物胁迫记忆调控中也发挥重要作用。例如, DNA甲基化、组蛋白甲基化及乙酰化等表观遗传修饰参与并维持特定的胁迫记忆。该文主要对表观遗传修饰介导的植物胁迫记忆最新进展进行综述, 并展望未来的重点和热点研究方向。

关键词: 表观遗传修饰, DNA甲基化, 组蛋白修饰, 胁迫记忆

Abstract: Because of the fixed growth habits lacking of mobility, plants have innovated unique strategies to cope with variable environmental conditions. For their survival, plants have evolved mechanisms of stress memories to adapt to the adverse environments and thus protect themselves. Epigenetic modifications not only regulate the growth and development of plants, but also participate in responses to various abiotic and/or biotic stresses. Recent studies have shown that epigenetic modifications play important roles in the control of plant stress memory. In particular, DNA methylation, histone methylation, histone acetylation modification, and other modifications are involved in the formation and the maintenance of specific stress memories. This review highlights the recent advances of plant stress memories mediated by epigenetic modifications, and some key challenges in this field were discussed.

Key words: epigenetic modification, DNA methylation, histone modification, stress memory

陈威,杨颖增,陈锋,周文冠,舒凯. 表观遗传修饰介导的植物胁迫记忆. 植物学报, 2019, 54(6): 779-785.

Wei Chen,Yingzeng Yang,Feng Chen,Wenguan Zhou,Kai Shu. Stress Memory Mediated by Epigenetic Modification in Plants. Chinese Bulletin of Botany, 2019, 54(6): 779-785.

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链接本文: https://www.chinbullbotany.com/CN/10.11983/CBB19137

https://www.chinbullbotany.com/CN/Y2019/V54/I6/779

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参考文献 39

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修饰方式	胁迫类型	相关基因或调控因子	物种	机理	参考文献
DNA 甲基化	干旱		桃叶蓼	DNA甲基化能介导干旱胁迫记忆的维持, 而DNA去甲基化处理会移除干旱胁迫记忆	Li et al., 2019; Herman and Sultan, 2016
			拟南芥	干旱胁迫记忆导致全基因组DNA低甲基化	Boyko et al., 2010
	盐		水稻	盐胁迫导致可遗传的DNA甲基化变化	Feng et al., 2012
		DNA糖基化酶	拟南芥	DNA特定区域的超甲基化介导盐胁迫记忆, 而DNA糖基化酶能够抑制盐胁迫记忆的遗传	Wibowo et al., 2016
	生物	PR-1	拟南芥	DNA的低甲基化水平增强PR-1的表达, 介导生物胁迫记忆的遗传	Luna et al., 2012
组蛋白修饰	高温	HSFA2	拟南芥	HSFA2能够维持高水平的H3K4me3/2, 从而维持高温胁迫记忆	Lämke et al., 2016; Liu et al., 2018
		FGT1	拟南芥	FGT1诱导并维持记忆基因的表达, 通过调控核小体占位介导胁迫记忆	Brzezinka et al., 2016
		HSFA2, REF6	拟南芥	HSFA2与REF6形成一个正反馈回路, 维持H3K27me3去甲基化调控的高温胁迫记忆	Liu et al., 2019
	干旱	RD29B, RAB18	拟南芥	高水平的H3K4me3修饰可以加快RD29B和RAB18基因的转录	Ding et al., 2012
	盐	HKT1	拟南芥	H3K27me3修饰水平的降低加快HKT1基因的转录	Sani et al., 2013
		P5CS1	拟南芥	高水平的H3K4me3修饰加快P5CS1基因的转录	Feng et al., 2016
	低温	COR15A, ATGOLS3	拟南芥	H3K27me3修饰减少促进COR15A和ATGOLS3基因的转录	Kwon et al., 2009
		FLC	拟南芥	H3K27me3与FLC基因启动子中的起始复合体(PRC2)互作, 进而维持对FLC基因表达的抑制	Berry and Dean, 2015
	生物	WRKY6, WRKY53	拟南芥	H3K4me3修饰促进WRKY6和WRKY53的转录	Jaskiewicz et al., 2011
		PLANT DEFENSIN1.2	拟南芥	H3K27me3修饰抑制PLANT DEFENSIN1.2基因的转录	Luna et al., 2012
		PATHOGENESIS-RELATED GENE1, WRKY6, WRKY53	拟南芥	H3K9ac修饰促进PATHOGENESIS-RELATED GENE1、WRKY6和WRKY53的转录	Luna et al., 2012

修饰方式	胁迫类型	相关基因或调控因子	物种	机理	参考文献
DNA 甲基化	干旱		桃叶蓼	DNA甲基化能介导干旱胁迫记忆的维持, 而DNA去甲基化处理会移除干旱胁迫记忆	Li et al., 2019; Herman and Sultan, 2016
			拟南芥	干旱胁迫记忆导致全基因组DNA低甲基化	Boyko et al., 2010
	盐		水稻	盐胁迫导致可遗传的DNA甲基化变化	Feng et al., 2012
		DNA糖基化酶	拟南芥	DNA特定区域的超甲基化介导盐胁迫记忆, 而DNA糖基化酶能够抑制盐胁迫记忆的遗传	Wibowo et al., 2016
	生物	PR-1	拟南芥	DNA的低甲基化水平增强PR-1的表达, 介导生物胁迫记忆的遗传	Luna et al., 2012
组蛋白修饰	高温	HSFA2	拟南芥	HSFA2能够维持高水平的H3K4me3/2, 从而维持高温胁迫记忆	Lämke et al., 2016; Liu et al., 2018
		FGT1	拟南芥	FGT1诱导并维持记忆基因的表达, 通过调控核小体占位介导胁迫记忆	Brzezinka et al., 2016
		HSFA2, REF6	拟南芥	HSFA2与REF6形成一个正反馈回路, 维持H3K27me3去甲基化调控的高温胁迫记忆	Liu et al., 2019
	干旱	RD29B, RAB18	拟南芥	高水平的H3K4me3修饰可以加快RD29B和RAB18基因的转录	Ding et al., 2012
	盐	HKT1	拟南芥	H3K27me3修饰水平的降低加快HKT1基因的转录	Sani et al., 2013
		P5CS1	拟南芥	高水平的H3K4me3修饰加快P5CS1基因的转录	Feng et al., 2016
	低温	COR15A, ATGOLS3	拟南芥	H3K27me3修饰减少促进COR15A和ATGOLS3基因的转录	Kwon et al., 2009
		FLC	拟南芥	H3K27me3与FLC基因启动子中的起始复合体(PRC2)互作, 进而维持对FLC基因表达的抑制	Berry and Dean, 2015
	生物	WRKY6, WRKY53	拟南芥	H3K4me3修饰促进WRKY6和WRKY53的转录	Jaskiewicz et al., 2011
		PLANT DEFENSIN1.2	拟南芥	H3K27me3修饰抑制PLANT DEFENSIN1.2基因的转录	Luna et al., 2012
		PATHOGENESIS-RELATED GENE1, WRKY6, WRKY53	拟南芥	H3K9ac修饰促进PATHOGENESIS-RELATED GENE1、WRKY6和WRKY53的转录	Luna et al., 2012