Comparison of Differentially Expressed Genes Involved in Drought Response between Two Elite Rice Varieties

• Published in: Molecular plant 2012-11, Vol.5 (6), p.1403-1405
• Main Authors: Zhang, Hai-Wen, Pan, Xiao-Wu, Li, Yong-Chao, Wan, Li-Yun, Li, Xiao-Xiang, Huang, Rong-Feng
• Format: Article
• Language: English
• Subjects: Breeding; Droughts; Gene Expression Regulation, Plant; Oryza; Oryza - classification; Oryza - genetics; Oryza - growth & development; Oryza - physiology; Seedlings - growth & development; Species Specificity; Time Factors; 地理分布; 基因工程; 差异表达基因; 干旱处理; 抗旱; 水稻品种; 种质资源
• ISSN: 1674-2052; 1752-9867
• DOI: 10.1093/mp/sss053

Dear Editor, Drought is the most devastating factor limiting the pro- ductivity and geographical distribution of rice （Oryza sativa）. Several drought-tolerant varieties have been developed from drought-tolerant germplasm. These varieties make it imper- ative to clarity the mechanism of drought responses at the genomic level, which will provide a foundation for future breeding and genetic engineering efforts （Zhou et al., 2007）. Yangdao6 （YD6） was used to breed many elite varieties in China, which was developed from Yangdao2 （YD2） through a series of crosses （Supplemental Figure 1）. Here, we veri- fied that YD6 seedlings showed better drought tolerance than YD2, Yangdao4 （YD4）, and 3021 seedlings （Figure 1A）. After drought treatment for 8 d, over 81.9% of YD2 plants were rolled, which is about three times that of YD6 plants. Recovering normal growth with water, the survival rates of YD6 and YD2 seedlings were 92.2% and 65.6%, respectively.