Potassium Retention under Salt Stress Is Associated with Natural Variation in Salinity Tolerance among Arabidopsis Accessions

doi:10.1371/journal.pone.0124032

	Potassium Retention under Salt Stress Is Associated with Natural Variation in Salinity Tolerance among Arabidopsis Accessions
	Sun, Yanling ; Kong, Xiangpei ; Li, Cuiling ; Liu, Yongxiu1 ; Ding, Zhaojun
	2015
发表期刊	PLOS ONE
ISSN	1932-6203
卷号	10 期号:5
摘要	Plants are exposed to various environmental stresses during their life cycle such as salt, drought and cold. Natural variation mediated plant growth adaptation has been employed as an effective approach in response to the diverse environmental cues such as salt stress. However, the molecular mechanism underlying this process is not well understood. In the present study, a collection of 82 Arabidopsis thaliana accessions (ecotypes) was screened with a view to identify variation for salinity tolerance. Seven accessions showed a higher level of tolerance than Col-0. The young seedlings of the tolerant accessions demonstrated a higher K+ content and a lower Na+/K+ ratio when exposed to salinity stress, but its Na+ content was the same as that of Col-0. The K+ transporter genes AtHAK5, AtCHX17 and AtKUP1 were up-regulated significantly in almost all the tolerant accessions, even in the absence of salinity stress. There was little genetic variation or positive transcriptional variation between the selections and Col-0 with respect to Na+-related transporter genes, as AtSOS genes, AtNHX1 and AtHKT1;1. In addition, under salinity stress, these selections accumulated higher compatible solutes and lower reactive oxygen species than did Col-0. Taken together, our results showed that natural variation in salinity tolerance of Arabidopsis seems to have been achieved by the strong capacity of K+ retention.
学科领域	Multidisciplinary Sciences
DOI	10.1371/journal.pone.0124032
收录类别	SCI
语种	英语
WOS关键词	VACUOLAR NA+/H+ ANTIPORTER ; MOLECULAR-MECHANISMS ; DISTINCT MECHANISMS ; K+/NA+ HOMEOSTASIS ; FREEZING TOLERANCE ; ALLELIC VARIATION ; GENETIC-VARIATION ; PROTEIN-KINASE ; K+ NUTRITION ; THALIANA
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000354918600006
出版者	PUBLIC LIBRARY SCIENCE
文献子类	Article
出版地	SAN FRANCISCO
资助机构	National Natural Science Foundation of China [31270327, 31222005] ; 1000-talents Plan from China for young researchers [11200095551303] ; Research Foundation for Excellent Young Scientist in Shandong Province [BS2013SW005]
作者邮箱	dingzhaojun@sdu.edu.cn
作品OA属性	gold, Green Published, Green Submitted
引用统计	被引频次：70[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25935
专题	中科院植物分子生理学重点实验室
作者单位	1.Shandong Univ, Coll Life Sci, Key Lab Plant Cell Engn & Germplasm Innovat, Jinan 250100, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yanling,Kong, Xiangpei,Li, Cuiling,et al. Potassium Retention under Salt Stress Is Associated with Natural Variation in Salinity Tolerance among Arabidopsis Accessions[J]. PLOS ONE,2015,10(5).
APA	Sun, Yanling,Kong, Xiangpei,Li, Cuiling,Liu, Yongxiu,&Ding, Zhaojun.(2015).Potassium Retention under Salt Stress Is Associated with Natural Variation in Salinity Tolerance among Arabidopsis Accessions.PLOS ONE,10(5).
MLA	Sun, Yanling,et al."Potassium Retention under Salt Stress Is Associated with Natural Variation in Salinity Tolerance among Arabidopsis Accessions".PLOS ONE 10.5(2015).

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