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草原樱桃PGIP基因的克隆及生物信息学分析

DOI: 10.3969/j.issn.1000-7091.2012.06.009, PP. 38-42

Keywords: 草原樱桃,PGIP基因,基因克隆,生物信息学

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Abstract:

为了克隆草原樱桃多聚半乳糖醛酸酶抑制蛋白基因,并进行生物信息学分析。以草原樱桃叶片基因组为模板,PGIP基因保守序列设计引物,通过PCR扩增获得约1kb的DNA片段。序列分析表明,该基因全长1193bp,包含有1个完整的开放阅读框,由2个外显子和1个内含子构成,外显子总长990bp,编码330个氨基酸,其编码的氨基酸序列中含有一段典型的亮氨酸重复序列,GenBank登录号为GU068977;该基因与中国李、杏、桃、马哈利樱桃、梅等李属植物的PGIP基因序列一致度达95%~99%。系统进化分析显示,属内亲缘关系较近、属间亲缘关系较远的特点。克隆了草原樱桃PGIP基因,为樱桃抗病育种提供一条新的基因资源。

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