J Integr Plant Biol. ›› 2006, Vol. 48 ›› Issue (10): 1244-1249.DOI: 10.1111/j.1744-7909.2006.00357.x

• Research Articles • Previous Articles    

Overexpression of a Chloroplast-located Peroxiredoxin Q Gene, SsPrxQ, Increases the Salt and Low-temperature Tolerance of Arabidopsis

Li-Wen Jing, Shi-Hua Chen, Xiao-Li Guo, Hui Zhang and Yan-Xiu Zhao   

Abstract: Abiotic stress, such as salt, drought and extreme temperature, can result in enhanced production of reactive oxygen species (ROS). Plants have developed both enzymatic ROS-scavenging and non-enzymatic ROS-scavenging systems. The major ROS-scavenging enzymes of plants include superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT), glutathione peroxidase (GPX) and peroxiredoxins (Prxs). In the present work, we identified a gene encoding chloroplast-located peroxiredoxin Q, SsPrxQ, from Suaeda salsa L. located at chloroplast. Overexpression of SsPrxQ in Arabidopsis leads to an increase in salt and low-temperature tolerance.

Key words: abiotic stress cDNA array, Oryza sativa, transcription factor.

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