Positive correlation between potassium uptake and salt tolerance in wheat

doi:10.1007/s11099-015-0124-3

	Positive correlation between potassium uptake and salt tolerance in wheat
	Cheng, D.; Wu, G.; Zheng, Y.
	2015
发表期刊	PHOTOSYNTHETICA
ISSN	0300-3604
卷号	53 期号:3 页码:447-454
摘要	The aim of our study was to answer whether any positive correlation exists between K+ uptake and salt tolerance in wheat. We carried out a sand-culture experiment with salt-tolerant, DK961 (ST), and salt-sensitive, JN17 (SS), wheat cultivars, where photosynthesis, the K+/Na+ ratio, growth, and the biomass yield were examined. The seeds were exposed for four weeks to six NaCl concentrations (50, 100, 150, 200, 250, and 300 mM), which were embodied in the Hoagland solution. Salinity-induced decrease of K+ or increase in the Na+ content was much smaller in ST than that in SS. The reductions in the light-saturated photosynthetic rate (P (Nmax)) and chlorophyll content caused by salinity were smaller in the ST compared to SS. Stomatal conductance decreased in both cultivars under saline conditions; nevertheless, it was lower in SS than in ST. The antioxidative capacity was higher in ST than that in SS under saline conditions. Significant positive correlations were observed in both cultivars between K+ contents and P (Nmax)/biomass yields. We suggest that higher-affinity K+ uptake might play a key role in higher salt tolerance and it might be a reliable indicator for breeding new species of salt-tolerant wheat.
关键词	gas exchange malondialdehyde peroxidase reactive oxygen species Triticum aestivum L.
学科领域	Plant Sciences
DOI	10.1007/s11099-015-0124-3
收录类别	SCI
语种	英语
WOS关键词	HIGH-AFFINITY POTASSIUM ; TRITICUM-AESTIVUM L. ; ARABIDOPSIS ROOTS ; K+-TRANSPORT ; SODIUM-TRANSPORT ; SALINITY STRESS ; WATER-STRESS ; PLANTS ; NA+ ; BARLEY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000358411000015
出版者	SPRINGER
文献子类	Article
出版地	DORDRECHT
EISSN	1573-9058
资助机构	National Natural Science Foundation of China [31170367] ; Chinese Academy of Sciences [KSZD-EW-Z-012]
作者邮箱	zhengyanhai333@163.com
引用统计	被引频次：15[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/2S10CLM1/25809
专题	植被与环境变化国家重点实验室
作者单位	1.[Cheng, D. 2.Wu, G. 3.Zheng, Y.] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.[Cheng, D.] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cheng, D.,Wu, G.,Zheng, Y.. Positive correlation between potassium uptake and salt tolerance in wheat[J]. PHOTOSYNTHETICA,2015,53(3):447-454.
APA	Cheng, D.,Wu, G.,&Zheng, Y..(2015).Positive correlation between potassium uptake and salt tolerance in wheat.PHOTOSYNTHETICA,53(3),447-454.
MLA	Cheng, D.,et al."Positive correlation between potassium uptake and salt tolerance in wheat".PHOTOSYNTHETICA 53.3(2015):447-454.

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