摘要
Drought is a major environmental factor that limits the yield of rice dramatically.Upland rice is now regarded as a promising rice cultivar in water saving agriculture.Two varieties of upland rice Zhonghan 3 and IR29 were used to compare the physiological and proteomic responses to hyper-osmotic stress induced by 15%polyethyleneglycol(PEG)at the reproductive stage.Osmotic stress affected the growth development and caused the loss of production especially the grain yield.IR29 was more tolerant to PEG than Zhonghan 3 as shown by less yield loss under osmotic stress conditions.Comparative proteomic analysis of the panicle suggested that the up-regulation of glycolysis related proteins and defense proteins may contribute to the better osmotic tolerance in IR29.
基金
supported by the National High Technology Research and Development Program of China(No.2007AA100603)
the International Science&Technology Cooperation Program of China(No.2010DFA91930)
a project from the Ministry of Agriculture of China for transgenic research(No.2008ZX08009).
