NDLI: Enhanced V-ATPase activity contributes to the improved salt tolerance of transgenic tobacco plants overexpressing vacuolar Na+/H+ antiporter AtNHX1

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Enhanced V-ATPase activity contributes to the improved salt tolerance of transgenic tobacco plants overexpressing vacuolar Na+/H+ antiporter AtNHX1

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Enhanced V-ATPase activity contributes to the improved salt tolerance of transgenic tobacco plants overexpressing vacuolar Na+/H+ antiporter AtNHX1

Content Provider	Springer Nature Link
Author	Zhou, Shufeng Zhang, Zhiming Tang, Qilin Lan, Hai Li, Yinxin Luo, Ping
Copyright Year	2010
Abstract	AtNHX1, a vacuolar Na+/H+ antiporter gene from Arabidopsis thaliana, was introduced into tobacco genome via Agrobacterium tumefaciens-mediated transformation to evaluate the role of vacuolar energy providers in plants salt stress response. Compared to the wild-type plants, over-expression of AtNHX1 increased salt tolerance in the transgenic tobacco plants, allowing higher germination rates of seeds and successful seedling establishment in the presence of toxic concentrations of NaCl. More importantly, the induced Na+/H+ exchange activity in the transgenic plants was closely correlated to the enhanced activity of vacuolar H+-ATPase (V-ATPase) when exposed to 200 mM NaCl. In addition, inhibition of V-ATPase activity led to the malfunction of Na+/H+ exchange activity, placing V-ATPase as the dominant energy provider for the vacuolar Na+/H+ antiporter AtNHX1. V-ATPase and vacuolar Na+/H+ antiporter thus function in an additive or synergistic way. Simultaneous overexpression of V-ATPase and vacuolar Na+/H+ antiporter might be appropriate for producing plants with a higher salt tolerance ability.
Starting Page	375
Ending Page	380
Page Count	6
File Format	PDF
ISSN	01415492
Journal	Biotechnology Letters
Volume Number	33
Issue Number	2
e-ISSN	15736776
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-09-30
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	AtNHX1 PPase activity Salt tolerance Tobacco V-ATPase activity Biochemistry Applied Microbiology Biotechnology Microbiology
Content Type	Text
Resource Type	Article
Subject	Medicine Bioengineering Applied Microbiology and Biotechnology Biotechnology

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