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Sinorhizobium meliloti are an aerobic, Gram-negative, and diazotrophic species of bacteria. S. meliloti are motile and possess a cluster of peritrichous flagella. S. meliloti fix atmospheric nitrogen into ammonia for their legume symbionts, such as alfalfa. S. meliloti forms a symbiotic relationship with legumes from the genera Medicago, Melilotus and Trigonella, including the model legume Medicago truncatula. This symbiosis promotes the development of a plant organ, termed a root nodule. Because soil often contains a limited amount of nitrogen for plant use, the symbiotic relationship between S. meliloti and their legume hosts has agricultural applications. These techniques reduce the need for inorganic nitrogenous fertilizers.
Mesorhizobium loti, formerly known as Rhizobium loti, is a Gram negative species of bacteria found in the root nodules of many plant species. Its name is a reference to Lotus corniculatus, a flowering plant from which it was originally isolated.
Rhizobium gallicum is a Gram-negative root-nodule bacterium. It forms nitrogen-fixing root nodules on legumes, being first isolated from those of Phaseolus vulgaris.
Bradyrhizobium arachidis is a species of legume-root nodulating, microsymbiotic nitrogen-fixing bacterium. It was first isolated from Arachis hypogaea root nodules in China. Its type strain is CCBAU 051107T.
Bradyrhizobium liaoningense is a species of legume-root nodulating, microsymbiotic nitrogen-fixing bacterium. It was first isolated from Glycine soja and Glycine max root nodules in China. Its type strain is strain 2281.
Mesorhizobium tianshanense, formerly known as Rhizobium tianshanense, is a Gram negative species of bacteria found in the root nodules of many plant species. Its type strain is A-1BS.
Bradyrhizobium canariense is a species of legume-root nodulating, endosymbiont nitrogen-fixing bacterium. It is acid-tolerant and nodulates endemic genistoid legumes from the Canary Islands. The type strain is BTA-1T.
Mesorhizobium amorphae is a species of root nodule bacteria first isolated from Amorpha fruticosa species in China. It is purported to be native to American soil. Its genome has been sequenced. Its type strain is ACCC 19665.
Bradyrhizobium yuanmingense is a species of legume-root nodulating, endosymbiont nitrogen-fixing bacterium, associated with Lespedeza and Vigna species. Its type species is CCBAU 10071(T).
Bradyrhizobium iriomotense is a species of legume-root nodulating, endosymbiont nitrogen-fixing bacterium, first isolated from Entada koshunensis. The type strain is EK05T.
Mesorhizobium albiziae is a bacterium from the genus of Mesorhizobium which was isolated from a subtropical region in China.
Mesorhizobium caraganae is a gram-negative, aerobic, non-spore-forming, motile bacteria from the genus of Mesorhizobium which was isolated from root nodules of Caragana microphyllain in the Beipiao City in the Liaoning Province in China.
Mesorhizobium chacoense is a gram-negative, aerobic, non-spore-forming, motile bacteria from the genus of Mesorhizobium which was isolated from root nodules of Prosopis alba in the Chaco Arido region in Argentina.
Mesorhizobium ciceri is a gram-negative, nitrogen-fixing motile bacteria from the genus of Mesorhizobium which was isolated from Chickpea nodules of Cicer arietinum in Spain. Rhizobium cicero was transferred to Mesorhizobium ciceri.
Mesorhizobium mediterraneum is a bacterium from the genus Mesorhizobium, which was isolated from root nodule of the Chickpea in Spain. The species Rhizobium mediterraneum was subsequently transferred to Mesorhizobium mediterraneum. This species, along with many other closely related taxa, have been found to promote production of chickpea and other crops worldwide by forming symbiotic relationships.
Mesorhizobium muleiense is a bacterium from the genus Mesorhizobium which was isolated from Cicer arietinum in Xinjiang in China.
Bradyrhizobium betae is a species of legume-root nodulating, microsymbiotic nitrogen-fixing bacterium first isolated from the roots of Beta vulgaris, hence its name. It is slow-growing an endophytic. The type strain is PL7HG1T.
Mesorhizobium tamadayense is a bacterium from the genus Mesorhizobium.
Devosia neptuniae is a nitrogen-fixing bacteria that nodulates Neptunia natans. It is Gram-negative, strictly aerobic short rod-shaped and motile by a subpolar flagellum. The type strain of D. neptuniae is LMG 21357T.
Paenarthrobacter aurescens, also known as Arthrobacter aurescens, is a bacterium species from the genus of Paenarthrobacter . Paenarthrobacter aurescens produces nitrilase and L-N-carbamoylase. Paenarthrobacter aurescens has a low GC-content and has the ability to utilize anethole.
References
- ↑ de Lajudie, P.; Willems, A.; Nick, G.; Moreira, F.; Molouba, F.; Hoste, B.; Torck, U.; Neyra, M.; Collins, M. D.; Lindstrom, K.; Dreyfus, B.; Gillis, M. (1998). "Characterization of tropical tree rhizobia and description of Mesorhizobium plurifarium sp. nov". International Journal of Systematic Bacteriology. 48 (2): 369–382. doi: 10.1099/00207713-48-2-369 . ISSN 0020-7713. PMID 9731275.
