Ueda T, Suga Y, Yahiro N, Matsuguchi T
Department of Agricultural Chemistry, Kyushu University, Fukuoka, Japan.
J Bacteriol. 1995 Jan;177(2):468-72. doi: 10.1128/jb.177.2.468-472.1995.
To understand the host specificity of rhizobia and the relationship between the evolution of Sym plasmids and that of host plants, we determined partial nodC sequences of 10 representative rhizobium strains and then constructed an evolutionary tree for the deduced amino acid sequences with four published sequences. These coding sequences yield a phylogenetic tree similar to that for leghemoglobin of host plants, suggesting that the evolution of common nodulation genes may be linked to host legume evolution and speciation.
为了解根瘤菌的宿主特异性以及共生质粒的进化与宿主植物进化之间的关系,我们测定了10株代表性根瘤菌菌株的部分nodC序列,然后用4条已发表序列为推导的氨基酸序列构建了进化树。这些编码序列产生的系统发育树与宿主植物豆血红蛋白的系统发育树相似,这表明常见结瘤基因的进化可能与宿主豆科植物的进化和物种形成有关。