Andam Cheryl P, Mondo Stephen J, Parker Matthew A
Department of Biological Sciences, State University of New York, Binghamton, NY 13902-6000, USA.
Appl Environ Microbiol. 2007 Jul;73(14):4686-90. doi: 10.1128/AEM.00160-07. Epub 2007 May 25.
nodA and nifH phylogenies for Cupriavidus nodule bacteria from native legumes in Texas and Costa Rica grouped all strains into a single clade nested among neotropical Burkholderia strains. Thus, Cupriavidus symbiotic genes were not acquired independently in different regions and are derived from other Betaproteobacteria rather than from alpha-rhizobial donors.
得克萨斯州和哥斯达黎加本土豆科植物根瘤中的贪铜菌根瘤细菌的nodA和nifH系统发育分析将所有菌株归为一个单一进化枝,嵌套在新热带伯克霍尔德菌菌株中。因此,贪铜菌的共生基因并非在不同地区独立获得,而是源自其他β-变形菌,而非α-根瘤菌供体。