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Mesorhizobium camelthorni sp. nov., isolated from Alhagi sparsifolia

Abstract : Nine strains isolated from symbiotic root nodules on Alhagi sparsifolia were previously designated as representing genospecies I. Phylogenetic analyses indicated that genospecies I was related closely to Mesorhizobium alhagi (genospecies II), and clearly formed a new lineage within the genus Mesorhizobium. In this study, we differentiated genospecies I from recognized species of the genus Mesorhizobium based on phylogenetic analyses of additional core genes (recA, glnA), levels of DNA–DNA relatedness (,43.3 %), fatty acid profile (58 % C 18 : 1 v7c, 19 % 11-methyl C 18 : 1 v7c), and biochemical and physiological characteristics. The nine strains are therefore considered to represent a novel species of the genus Mesorhizobium, for which the name Mesorhizobium camelthorni sp. nov. is proposed. The type strain is CCNWXJ 40-4 T (5HAMBI 3020 T 5ACCC 14549 T).
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Wei-Min Chen, Wen-Fei Zhu, Cyril Bontemps, Hong Wei, J. Peter W. Young, et al.. Mesorhizobium camelthorni sp. nov., isolated from Alhagi sparsifolia. International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, 2011, 61 (3), pp.574-579. ⟨10.1099/ijs.0.022947-0⟩. ⟨hal-01655740⟩



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