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抑制消减杂交法分离与鉴定灵芝G蛋白β亚基基因

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摘要 灵芝细胞在液体静置和振荡培养方式下,抗癌物质灵芝酸的产量有显著的差别。采用抑制消减杂交法分离了灵芝细胞在两种不同培养方式下差异表达的基因,对构建的差减文库进行筛选后获得了一个灵芝的EST序列。根据这个EST序列,采用RACE-PCR的方法成功克隆到了灵芝G蛋白β亚基(Gb)基因(GenBank登录号GQ293361)。序列分析显示这个基因cDNA全长1217bp,编码了313个氨基酸。同源性分析表明其编码的氨基酸与其他蘑菇类真菌Gβ的氨基酸序列同源性较高,与Coprinopsis cinerea(XP_001830441.1)、Lentinula edodes(AAP13580.2)和Schizophyllum commune(XP_003029882.1)的一致性分别达到91%、91%和90%。实时荧光定量PCR结果表明这个基因在液体静置培养方式下的表达量显著高于振荡培养。
出处 《食用菌》 2012年第2期62-64,共3页 Edible Fungi
基金 国家自然科学基金"灵芝真菌液体静态培养过程中灵芝酸积累的调控研究"(20776084)
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