The Negative Regulator OsSDS1 Significantly Reduces Salt and Drought Tolerance in Transgenic Arabidopsis

Plant Molecular Biology Reporter - Tập 31 - Trang 517-523 - 2012
Guoyun Xu1, Mingjuan Li1, Mei Huang1, Yanchun Cui1, Manling Wang1, Xinjie Xia1
1Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan, China

Tóm tắt

In this report, we present data on OsSDS1 (Oryza sativa L. salt and drought sensitive gene 1)—an uncharacterized gene isolated from rice Pei’ai 64S (O. sativa L.). Expression of OsSDS1 was strongly up-regulated by a wide spectrum of stresses, including cold, drought, and heat, in different tissues at different developmental stages of rice, as revealed by both microarray and quantitative RT-PCR analyses. Subcellular localization revealed that an OsSDS1: GFP fusion protein was distributed to the nucleus. Expression of OsSDS1 conferred decreased tolerance to salt and drought in Arabidopsis thaliana, accompanied by altered expression of stress-responsive genes and altered K+/Na+ ratio. The results suggest that OsSDS1 may act as a negative regulator of salt and drought tolerance in plants.

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