Overexpression of SeNHX1 improves both salt tolerance and disease resistance in tobacco

doi:10.4161/15592324.2014.993240

	Overexpression of SeNHX1 improves both salt tolerance and disease resistance in tobacco
	Chen, Xianyang; Bao, Hexigeduleng; Guo, Jie; Jia, Weitao; Li, Yinxin
	2015
发表期刊	PLANT SIGNALING & BEHAVIOR
ISSN	1559-2316
卷号	10 期号:4
摘要	Recently, we found NHX1, the gene encoding a Na+/H+ exchanger, participated in plant disease defense. Although NHX1 has been confirmed to be involved in plant salt tolerance, whether the NHX1 transgenic plants exhibit both salt tolerance and disease resistance has not been investigated. The T1 progenies of Nicotiana tabacum L. lines expressing SeNHX1 (from Salicornia europaea) were generated for the present study. Compared with PBI-type control plants, SeNHX1 transgenic tobaccos exhibited more biomass, longer root length, and higher K+/Na+ ratio at post germination or seedling stage under NaCl treatment, indicating enhanced salt tolerance. The vacuolar H+ efflux in SeNHX1 transgenic tobacco was increased after treatment of NaCl with different concentration. Meanwhile, the SeNHX1 transgenic tobaccos showed smaller wilted spot area, less H2O2 accumulation in leaves after infection of Phytophthora parasitica var. nicotianae. Further investigation demonstrated a larger NAD(P)(H) pool in SeNHX1 transgenic tobacco. These evidences revealed that overexpression of SeNHX1 intensified the compartmentation of Na+ into vacuole under salt stress and improved the ability of eliminating ROS after pathogen attack, which then enhanced salt tolerance and disease resistance simultaneously in tobacco. Our findings indicate NHX1 has potential value in creating crops with both improved salt tolerance and disease resistance.
关键词	disease resistance Na+/H+ exchanger salt tolerance SeNHX1 tobacco vacuolar H+ flux
学科领域	Biochemistry & Molecular Biology ; Plant Sciences
DOI	10.4161/15592324.2014.993240
收录类别	SCI
语种	英语
WOS关键词	NA+/H+ ANTIPORTER GENE ; VACUOLAR ; HOMEOSTASIS ; EXCHANGER ; STRESS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000362317900010
出版者	TAYLOR & FRANCIS INC
文献子类	Article
出版地	PHILADELPHIA
EISSN	1559-2324
资助机构	Chinese Ministry of Agriculture [2013ZX08009-003-002] ; National Natural Science Foundation of China [31200201]
作者邮箱	yxli@ibcas.ac.cn
作品OA属性	Bronze, Green Published
引用统计	被引频次：9[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/2S10CLM1/25936
专题	中科院植物分子生理学重点实验室
作者单位	Chinese Acad Sci, Key Lab Plant Mol Physiol, Inst Bot, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xianyang,Bao, Hexigeduleng,Guo, Jie,et al. Overexpression of SeNHX1 improves both salt tolerance and disease resistance in tobacco[J]. PLANT SIGNALING & BEHAVIOR,2015,10(4).
APA	Chen, Xianyang,Bao, Hexigeduleng,Guo, Jie,Jia, Weitao,&Li, Yinxin.(2015).Overexpression of SeNHX1 improves both salt tolerance and disease resistance in tobacco.PLANT SIGNALING & BEHAVIOR,10(4).
MLA	Chen, Xianyang,et al."Overexpression of SeNHX1 improves both salt tolerance and disease resistance in tobacco".PLANT SIGNALING & BEHAVIOR 10.4(2015).

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