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Position: Home > Articles > Cloning and Sequence Analysis of Novel LMW-GS Genes from Dasypyrum villosa Journal of Triticeae Crops 2011,31 (2) 35-41

簇毛麦新型低分子量谷蛋白亚基的分子克隆与序列分析

作  者:
王延鹏;高翔;陈其皎;赵万春;董剑;史红飞;臧闻;李志业;李晓燕
单  位:
陕西省小麦工程技术研究中心/陕西省小麦新品种培育工程研究中心;西北农林科技大学农学院
关键词:
簇毛麦;LMW-GS;序列分析;进化关系
摘  要:
为发掘低分子量谷蛋白亚基(LMW-GS)新的变异类型,通过设计引物和特异PCR扩增,从簇毛麦TA2127基因组DNA中得到14个LMW-GS基因,GenBank登录号分别为HQ615147~HQ615160。序列分析表明,所有基因具有完整编码区,长度为831bp和846bp,可编码277和282个氨基酸残基,推导的氨基酸序列分析显示,14个基因编码的蛋白序列都缺少一段N-端保守区,且N-端序列是一种新的类型;在14个LMW-GS基因中检测到19个SNPs和1个16bp的缺失。系统进化分析表明,簇毛麦LMW-GS与ω-醇溶蛋白和HMW-GS亲缘关系相对较远,与普通小麦Glu3-的低分子谷蛋白基因进化关系相对较近。
译  名:
Cloning and Sequence Analysis of Novel LMW-GS Genes from Dasypyrum villosa
作  者:
WANG Yan-peng1,GAO Xiang1,2,CHEN Qi-jiao1,2,ZHAO Wan-chun1,2, DONG Jian1,2,SHI Hong-fei1,ZANG Wen1,LI Zhi-ye1,LI Xiao-yan1,2(1.College of Agronomy,Northwest A&F University,Yangling,Shaanxi 712100,China;2.Wheat Engineering Research Center of Shaanxi Province/ New Varieties Cultivation of Wheat Engineering Research Center of Shaanxi Province,Yangling,Shaanxi 712100,China)
关键词:
Dasypyrum villosa;LMW-GS;Sequence analysis;Evolutionary
摘  要:
In order to discover new LMW-GS genes and provide more important information for the further genetic improvement,fourteen novel LMW-GS genes(GenBank accession number: HQ615147~HQ615160) from Dasypyrum villosa(TA2127) were amplified and cloned using PCR-based strategy.The lengths of the open reading frames(ORF) of those LMW-GS genes were 831 and 846 bp,encoding a mature protein of 277 and 282 amino acid residues.Comparative analysis showed that all genes lacked the conserved sequence of N-terminal,and the N-terminal was new types.A total of nineteen single nucleotide polymorphisms(SNPs) and a 16 bp deletion among the fourteen LMW-GS genes were identified.Phylogenetic and evolutionary analysis revealed that the LMW-GS genes from Dasypyrum villosa were closely related to LMW-GS genes of Glu-3 and less homology was found between LMW-DV genes with HMW-GS and ω-gliadin genes.

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