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  • Title: Mesorhizobium albiziae sp. nov., a novel bacterium that nodulates Albizia kalkora in a subtropical region of China.
    Author: Wang FQ, Wang ET, Liu J, Chen Q, Sui XH, Chen WF, Chen WX.
    Journal: Int J Syst Evol Microbiol; 2007 Jun; 57(Pt 6):1192-1199. PubMed ID: 17551028.
    Abstract:
    A novel Mesorhizobium group associated with Albizia kalkora [Wang et al. (2006), Syst Appl Microbiol 29, 502-517] was further characterized. The seven strains in this group showed similar protein patterns and were different from defined Mesorhizobium species in SDS-PAGE of whole-cell proteins. The representative strain CCBAU 61158(T) formed a novel Mesorhizobium lineage in phylogenetic analyses of 16S rRNA, atpD, glnII and nifH genes. However, its nodC gene sequence was more similar to that of Rhizobium gallicum R602sp(T) than to those of Mesorhizobium species. DNA-DNA relatedness between CCBAU 61158(T) and reference strains of defined Mesorhizobium species was lower than 34.1 %. These results indicated that this Mesorhizobium group was a unique genomic species. The subtropical distribution, host origin, PCR-RFLP patterns of 16S rRNA genes, fatty acid profile and a series of phenotypic characteristics could be used as distinctive features of this group. This group is therefore proposed as a novel species, Mesorhizobium albiziae sp. nov., with CCBAU 61158(T) (=LMG 23507(T)=USDA 4964(T)) as the type strain. Strain CCBAU 61158(T) could form effective nodules on Albizia julibrissin, Glycine max, Leucaena leucocephala and Phaseolus vulgaris.
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