抑制不同分支酶基因表达对稻米品质影响的初步研究

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【摘要】

：

淀粉是水稻胚乳中的最主要成分,其组成与结构是决定稻米品质优劣和功能特性的重要因素。淀粉由直链淀粉与支链淀粉两种成分组成,淀粉分支酶是参与淀粉合成的关键酶,在水稻中存在3种同工型,分别为SBEⅠ、SBEⅡa (SBE4)和SBEⅡb (SBE3)。已有研究表明SBEⅠ和SBE3主要参与了胚乳中支链淀粉的合成调控,并且下调表达后能够提高表观直链淀粉含量和抗性淀粉含量。SBE4主要在叶片中表达,有关其对

【作者】

：

赵本真

【机构】

：

扬州大学

【发表日期】

：

2013年05期

【关键词】

：

水稻淀粉分支酶稻米品质抗性淀粉转基因 RNA干扰

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抑制不同分支酶基因表达对稻米品质影响的初步研究

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