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甘蔗热带种Badila蔗糖合成酶基因的克隆及表达分析

, PP. 58-62

Keywords: Badila,蔗糖合成酶,序列分析,表达分析

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Abstract:

植物中蔗糖合成酶是促使蔗糖进入各种代谢途径的关键酶之一。从GenBank中筛选出两条与一个蔗糖合成酶基因高度相似的EST序列,利用RACE技术获得1个长度为2970bp,包含完整编码框(2448bp)的cDNA,命名为SoSuS1(GenBank登录号:JX416283)。氨基酸序列同源性比对显示SoSuS1蛋白是一个典型的胞质内可溶性蔗糖合成酶。组织表达特异性分析显示SoSuS1在茎、叶鞘和叶片中均有表达,表明该基因在多个组织器官中发挥作用;而SoSuS1在茎中的表达量最高,茎可能是其主要作用部位。

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