水稻永绿色基因对细胞壁主要成分含量的影响  

Effects of SGR gene on cell wall components in rice

作　　者：张华[1,2] 李美茹[1] 陈雅平[1] 吴平治[1] 吴国江[1] 姜华武[1] 

机构地区：[1]中国科学院华南植物园,广东广州510650 [2]中国科学院研究生院,北京100049

出　　处：《广东农业科学》2011年第11期33-34,共2页Guangdong Agricultural Sciences

基　　金：国家自然科学基金(30770174);国家"863"计划项目(2006AA10Z163)

摘　　要：研究了水稻永绿色基因(SGR)突变和超表达对水稻细胞壁成分含量的影响。结果表明,SGR基因突变对水稻植株细胞壁主要成分含量没有显著影响;SGR基因超表达对水稻植株细胞壁中纤维素、木质素和果胶的含量没有显著影响,但显著降低了半纤维素的含量。Stay-green rice （SGR） promotes the destabilization of the light-harvesting complex. Overexpression of SGR （Ov-SGR） in rice results in the accumulation of reactive oxygen species in transgenic plants. In this study, we analyzed the effects of SGR mutant （SGR） and Ov-SGR on components of cell wall in rice plants. As a result, no significantly difference of the contents of cellulose, pectin, and lignin were detected between the wild-type and SGR rice plants; whereas the content of hemicelluloses was significantly lower in Ov- SGR rice plants than in wild-type and SGRrice plants. The mechanism that Ov-SGR decreased the content of hemicelluloses in transgenic rice plants remained to be studied.

关 键 词：永绿色基因 活性氧 细胞壁 半纤维素 

分 类 号：S511.01[农业科学—作物学]