干旱区生态环境知识资源中心(Arid): A novel TF molecular switch-mechanism found in two contrasting ecotypes of a psammophyte, Agriophyllum squarrosum, in regulating transcriptional drought memory

Arid

DOI	10.1186/s12870-023-04154-6
	A novel TF molecular switch-mechanism found in two contrasting ecotypes of a psammophyte, Agriophyllum squarrosum, in regulating transcriptional drought memory
	Fang, Tingzhou; Qian, Chaoju; Daoura, Bachir Goudia; Yan, Xia; Fan, Xingke; Zhao, Pengshu; Liao, Yuqiu; Shi, Liang; Chang, Yuxiao; Ma, Xiao-Fei
通讯作者	Ma, XF
来源期刊	BMC PLANT BIOLOGY
ISSN	1471-2229
出版年	2023
卷号	23 期号:1
英文摘要	BackgroundPrior drought stress may change plants response patterns and subsequently increase their tolerance to the same condition, which can be referred to as drought memory and proved essential for plants well-being. However, the mechanism of transcriptional drought memory in psammophytes remains unclear. Agriophyllum squarrosum, a pioneer species on mobile dunes, is widely spread in Northern China's vast desert areas with outstanding ability of water use efficiency. Here we conducted dehydration-rehydration treatment on A. squarrosum semi-arid land ecotype AEX and arid land ecotype WW to dissect the drought memory mechanism of A. squarrosum, and to determine the discrepancy in drought memory of two contrasting ecotypes that had long adapted to water heterogeneity.ResultPhysiological traits monitoring unveiled the stronger ability and longer duration in drought memory of WW than that of AEX. A total of 1,642 and 1,339 drought memory genes (DMGs) were identified in ecotype AEX and WW, respectively. Furthermore, shared DMGs among A. squarrosum and the previously studied species depicted that drought memory commonalities in higher plants embraced pathways like primary and secondary metabolisms; while drought memory characteristics in A. squarrosum were mainly related to response to heat, high light intensity, hydrogen peroxide, and dehydration, which might be due to local adaptation to desert circumstances. Heat shock proteins (HSPs) occupied the center of the protein-protein interaction (PPI) network in drought memory transcription factors (TF), thus playing a key regulatory role in A. squarrosum drought memory. Co-expression analysis of drought memory TFs and DMGs uncovered a novel regulating module, whereby pairs of TFs might function as molecular switches in regulating DMG transforming between high and low expression levels, thus promoting drought memory reset.ConclusionBased on the co-expression analysis, protein-protein interaction prediction, and drought memory metabolic network construction, a novel regulatory module of transcriptional drought memory in A. squarrosum was hypothesized here, whereby recurrent drought signal is activated by primary TF switches, then amplified by secondary amplifiers, and thus regulates downstream complicated metabolic networks. The present research provided valuable molecular resources on plants' stress-resistance basis and shed light on drought memory in A. squarrosum.
英文关键词	Drought memory Agriophyllum squarrosum Molecular switch Comparative transcriptomics Psammophytes Local adaptation
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000960918600003
WOS关键词	STRESS TOLERANCE ; PLANT-RESPONSES ; TREHALOSE ; RESISTANCE ; GROWTH ; GENES ; BIOSYNTHESIS ; ACCUMULATION ; GLUTATHIONE ; EXPRESSION
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395593
推荐引用方式 GB/T 7714	Fang, Tingzhou,Qian, Chaoju,Daoura, Bachir Goudia,et al. A novel TF molecular switch-mechanism found in two contrasting ecotypes of a psammophyte, Agriophyllum squarrosum, in regulating transcriptional drought memory[J],2023,23(1).
APA	Fang, Tingzhou.,Qian, Chaoju.,Daoura, Bachir Goudia.,Yan, Xia.,Fan, Xingke.,...&Ma, Xiao-Fei.(2023).A novel TF molecular switch-mechanism found in two contrasting ecotypes of a psammophyte, Agriophyllum squarrosum, in regulating transcriptional drought memory.BMC PLANT BIOLOGY,23(1).
MLA	Fang, Tingzhou,et al."A novel TF molecular switch-mechanism found in two contrasting ecotypes of a psammophyte, Agriophyllum squarrosum, in regulating transcriptional drought memory".BMC PLANT BIOLOGY 23.1(2023).