鸡眼草根瘤菌的16S rDNA全序列分析

被引:6
作者
韦革宏
朱铭莪
陈文新
机构
[1] 中国农业大学生物学院!北京
[2] 西北农林科技大学资源与环境科学系!杨凌
关键词
根瘤菌; 鸡眼草根瘤菌; 16S rDNA全序列;
D O I
10.13343/j.cnki.wsxb.2001.01.022
中图分类号
Q939 [微生物分类学(系统微生物学)];
学科分类号
摘要
Based on the previous studies on numerical taxonomy, SDS\|PAGE of whole\|cell protein and DNA hybridization, the rhizobial strains isolated from \%Kummerowia\% sp. in semi\|arid area of North\|west constituted a new subgroup, the 16S rDNA sequence of representative strain SH714 were tested. The unrooted phylogenetic tree was produced. In this tree, the strain SH714 with \%Sinorhizobium xinjiangensis, S. fredii, S. meliloti, S. medicae, S. saheli\% and \%S. teranga\% constituted a branch of \%Sinorhizobium.\% Within this branch, the similarity valuse of 16S rDNA sequence between strain SH714 and \%S. xinjiangesis, S. fredii, S. meliloti, S. medicae, S. saheli\% and \%S. teranga\% were 97.4%, 97.5%, 96.8%, 96.7%, 97.2% and 95.6% respectively, the values were more than 95%, this indicated that these known species should belong to the same genus. The values of DNA homology between type strains of these species were less than 70%. Thus, the strain SH714 represented a new rhizobial species, and there were some diversity between SH714 and known rhizobial species in phenotypic feature and composition of protien.
引用
收藏
页码:113 / 116
页数:4
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[2]   根瘤菌新类群代表菌株的16S rDNA全序列测定及其系统发育地位 [J].
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