CNPSo 1112(T) is a nitrogen-fixing symbiont of perennial soybean, a tropical legume forage. Its draft genome indicates a large genome with a circular chromosome and 9,554 coding sequences (CDSs). Operons of nodulation, nitrogen fixation, and uptake hydrogenase were present in the symbiotic island, and the genome encompasses several CDSs of stress tolerance.
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The elite strain INPA03-11B approved as a cowpea inoculant in Brazil represents a new Bradyrhizobium species and it has high adaptability to stressful soil conditions.
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CNPSo 1112(T) is a nitrogen-fixing symbiont of perennial soybean, a tropical legume forage. Its draft genome indicates a large genome with a circular chromosome and 9,554 coding sequences (CDSs). Operons of nodulation, nitrogen fixation, and uptake hydrogenase were present in the symbiotic island, and the genome encompasses several CDSs of stress tolerance.
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Int J Syst Evol Microbiol
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Universidade Estadual de Londrina, Department of Microbiology, C.P. 10.011, 86057-970 Londrina, Paraná, Brazil.
Biological nitrogen fixation is a key process for agricultural production and environmental sustainability, but there are comparatively few studies of symbionts of tropical pasture legumes, as well as few described species of the genus Bradyrhizobium, although it is the predominant rhizobial genus in the tropics. A detailed polyphasic study was conducted with two strains of the genus Bradyrhizobium used in commercial inoculants for tropical pastures in Brazil, CNPSo 1112T, isolated from perennial soybean (Neonotonia wightii), and CNPSo 2833T, from desmodium (Desmodium heterocarpon). Based on 16S-rRNA gene phylogeny, both strains were grouped in the Bradyrhizobium elkanii superclade, but were not clearly clustered with any known species.
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