Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake

doi:10.1007/s11738-015-1957-x

	Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake
	Yan, K; Xu, HL; Cao, W; Chen, XB; Yan, K (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China. kyan@yic.ac.cn
发表期刊	ACTA PHYSIOLOGIAE PLANTARUM
ISSN	0137-5881
	2015-10
卷号	37 期号:10 页码:203
关键词	Antioxidant Osmotic Adjustment Photosynthesis Root Na++ Extrusion Salt Pretreatment
DOI	10.1007/s11738-015-1957-x
产权排序	[Yan, Kun; Chen, Xiaobing] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China; [Yan, Kun; Chen, Xiaobing] YICCAS, Shandong Prov Key Lab Coastal Environm Proc, Yantai, Peoples R China; [Xu, Hualing] Dongying Acad Agr Sci, Dongying, Peoples R China; [Cao, Wei] Bur Educ & Sport, Yantai, Peoples R China
作者部门	中科院海岸带环境过程与生态修复重点实验室
英文摘要	This study attempted to explore how salt priming affected salt tolerance in sweet sorghum with emphasis on root Na+ uptake. After 10 days of pretreatment with 150 mM NaCl, plants were stressed with 300 mM NaCl. After salt stress for 7 days, dry matter of root and shoot decreased by 58.7 and 69.7 % in non-pretreated plants and by 37.9 and 41.3 % in pretreated plants. Consistently, pretreated plants maintained higher photosynthetic rate during salt stress, suggesting the enhanced tolerance by salt priming. Salt priming enhanced osmotic resistance, as proline and relative water contents in the leaf were higher in pretreated plants under salt stress. Salt priming alleviated salt-induced oxidative damage not by improving antioxidant protection due to lower increase in leaf malondialdehyde content and no extra induction on ascorbate peroxidase, catalase, superoxide dismutase, ascorbic acid and reduced glutathione in pretreated plants. After 7 days of salt stress, root Na+ efflux increased by 8.5- and 3.9-folds in pretreated and non-pretreated plants, suggesting that salt priming reduced root Na+ uptake, and then root and leaf Na+ accumulation were mitigated in pretreated plants. However, root Na+ extrusion became indifferent between pretreated and non-pretreated plants under salt stress after inhibiting plasma membrane (PM) Na+/H+ antiporter. Thus, the greater Na+ extrusion induced by salt priming had relation to PM Na+/H+ antiporter. Overall, salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake.
文章类型	期刊论文
资助机构	National Natural Science Foundation of China [41201292]
收录类别	SCI
语种	英语
关键词[WOS]	RADIATA L. WILCZEK ; SALINITY TOLERANCE ; PHOTOSYSTEM-II ; LIPID-PEROXIDATION ; NACL PRETREATMENT ; PHYSIOLOGICAL ANALYSIS ; ANTIOXIDATIVE SYSTEM ; STRESS ; GENOTYPES ; PLANTS
研究领域[WOS]	Plant Sciences
WOS记录号	WOS:000362291800009
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/13810
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者	Yan, K (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China. kyan@yic.ac.cn
推荐引用方式 GB/T 7714	Yan, K,Xu, HL,Cao, W,et al. Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake[J]. ACTA PHYSIOLOGIAE PLANTARUM,2015,37(10):203.
APA	Yan, K,Xu, HL,Cao, W,Chen, XB,&Yan, K .(2015).Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake.ACTA PHYSIOLOGIAE PLANTARUM,37(10),203.
MLA	Yan, K,et al."Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake".ACTA PHYSIOLOGIAE PLANTARUM 37.10(2015):203.

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