Comparative analysis of panicle proteomes of two upland rice varieties upon hyper-osmotic stress
Wei HUANG , Ting BI , Weining SUN
Front. Biol. ›› 2010, Vol. 5 ›› Issue (6) : 546 -555.
Comparative analysis of panicle proteomes of two upland rice varieties upon hyper-osmotic stress
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.
upland rice / panicle proteome / grain yield / glycolysis / cytosolic ascorbate peroxidase
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Higher Education Press and Springer-Verlag Berlin Heidelberg
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