数字农科院2.0

大豆疫霉根腐病菌的rDNA ITS序列分析(英文)

文献类型: 中文期刊

作者: 徐鹏飞;韩英鹏;吴俊江;吕慧颖;邱丽娟;常汝镇;靳立梅;王金生;于安亮;陈晨;南海洋;许修宏;王萍;张大勇;张淑珍;李文滨;陈维元

作者机构:

关键词: 大豆;疫霉根腐病菌;rDNA;系统发育

期刊名称:遗传学报

ISSN: 1673-8527

年卷期: 2007 年 34 卷 02 期

页码: 180-188

收录情况: SCI ; 北大核心 ; CSCD

摘要: 采用真菌核糖体基因转录间隔区(ITS)通用引物,PCR扩增了大豆疫霉根腐病菌具有差异的17个菌株的ITSI与ITS2,经过与DL2000的标准分子量DNA进行比较,得到了大约800~1000bp左右的片段,并对PCR产物进行了序列测定。以USA为外类群利用最大简约法构建了大豆疫霉根腐病菌的系统发生树,并分析了菌株之间的遗传进化关系。结果表明:不同菌株ITS1和ITS2在碱基构成上有很大差异,17个菌株大致分为4个谱系中,且来自于同一地区的菌株大都分布在同一谱系中,显示出地理上的差异。

分类号: S435.651

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