Light affects salt stress-induced transcriptional memory of P5CS1 in Arabidopsis

doi:10.1073/pnas.1610670114

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	Light affects salt stress-induced transcriptional memory of P5CS1 in Arabidopsis
	Feng, Xuan Jun 1; Li, Jing Rui 1; Qi, Shi Lian ; Lin, Qing Fang ; Jin, Jing Bo 3; Hua, Xue Jun
刊名	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
	2016
卷号	113 期号:51
关键词	transcriptional memory light H3K4me3 HY5/HYH P5CS1
ISSN号	0027-8424
DOI	10.1073/pnas.1610670114
文献子类	Article
英文摘要	To cope with environmental stresses, plants often adopt a memory response upon primary stress exposure to facilitate a quicker and stronger reaction to recurring stresses. However, it remains unknown whether light is involved in the manifestation of stress memory. Proline accumulation is a striking metabolic adaptation of higher plants during various environmental stresses. Here we show that salinity-induced proline accumulation is memorable and HY5dependent light signaling is required for such a memory response. Primary salt stress induced the expression of. Delta(1)-pyrroline-5-carboxylate synthetase 1 (P5CS1), encoding a proline biosynthetic enzyme and proline accumulation, which were reduced to basal level during the recovery stage. Reoccurring salt stress-induced stronger P5CS1 expression and proline accumulation were dependent upon light exposure during the recovery stage. Further studies demonstrated that salt-induced transcriptional memory of P5CS1 is associated with the retention of increased H3K4me3 level at P5CS1 during the recovery stage. HY5 binds directly to light-responsive element, C/A-box, in the P5CS1 promoter. Deletion of the C/A-box or hy5 hyh mutations caused rapid reduction of H3K4me3 level at P5CS1 during the recovery stage, resulting in impairment of the stress memory response. These results unveil a previously unrecognized mechanism whereby light regulates salt-induced transcriptional memory via the function of HY5 in maintaining H3K4me3 level at the memory gene.
学科主题	Multidisciplinary Sciences
出版地	WASHINGTON
WOS关键词	HISTONE MODIFICATIONS ; PROLINE ACCUMULATION ; ABSCISIC-ACID ; GENES ; ELEMENTS ; IDENTIFICATION ; BIOSYNTHESIS ; DEGRADATION ; INTEGRATION ; EXPRESSION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	NATL ACAD SCIENCES
WOS记录号	WOS:000390044900014
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31271308] ; Ministry of Science and Technology of the People's Republic of ChinaMinistry of Science and Technology, China [2012CB114302] ; Chinese Academy of SciencesChinese Academy of Sciences [XDA08010105]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/24599]
专题	中科院北方资源植物重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources & Beijing Bot Garden, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing 100093, Peoples R China 3.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Feng, Xuan Jun,Li, Jing Rui,Qi, Shi Lian,et al. Light affects salt stress-induced transcriptional memory of P5CS1 in Arabidopsis[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2016,113(51).
APA	Feng, Xuan Jun,Li, Jing Rui,Qi, Shi Lian,Lin, Qing Fang,Jin, Jing Bo,&Hua, Xue Jun.(2016).Light affects salt stress-induced transcriptional memory of P5CS1 in Arabidopsis.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,113(51).
MLA	Feng, Xuan Jun,et al."Light affects salt stress-induced transcriptional memory of P5CS1 in Arabidopsis".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 113.51(2016).