Bradyrhizobium is a genus of Gram-negative soil bacteria, many of which fix nitrogen. Nitrogen fixation is an important part of the nitrogen cycle. Plants cannot use atmospheric nitrogen (N2); they must use nitrogen compounds such as nitrates.
Herbaspirillum lusitanum is a nitrogen-fixing bacterium found in root nodules of common beans. Phylogenetic analyses have shown this bacterium belongs to the genus Herbaspirillum. H. lusitanum lacks the nif gene. A nodD-like gene is present, but no other nod genes have been identified. The lack of nif and nod genes suggests H. lusitanum is an opportunistic bacterium capable of colonizing root nodules, but is unable to fix nitrogen.
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.
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.
Bradyrhizobium yuanmingense is a species of legume-root nodulating, endosymbiont nitrogen-fixing bacterium, associated with Lespedeza and Vigna species. Its type strain 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.
Rhizobium lusitanum is a Gram negative root nodule bacteria, specifically nodulating Phaseolus vulgaris. Its type strain is P1-7T.
Azospirillum oryzae is a species of nitrogen-fixing bacteria associated with the roots of Oryza sativa. Its type strain is COC8T.
Bradyrhizobium cytisi is a bacterium from the genus of Bradyrhizobium.
Bradyrhizobium daqingense is a bacterium from the genus Bradyrhizobium.
Bradyrhizobium denitrificans is a bacterium from the genus Bradyrhizobium which was isolated from surface lake water in Germany.
Bradyrhizobium jicamae is a Gram-negative, strictly aerobic bacteria from the genus Bradyrhizobium.
Bradyrhizobium oligotrophicum is a nitrogen-fixing bacteria from the genus of Bradyrhizobium which was isolated from rice paddy soil in Miyagi Prefecture in Japan.
Micromonospora fulviviridis is an endophytic actinomycete, with type strain DSM 43906T.
Ancylobacter rudongensis is a bacterium from the family of Xanthobacteraceae which has been isolated from root of the plant Spartina anglica from the beach from the Jiangsu Province in China.
Pseudoxanthobacter soli is a Gram negative, aerobic rod-shaped and nitrogen fixing bacterium which has been isolated from soil from an agricultural research field station in Kaohsiung County in Taiwan.
Sphingomonas azotifigens is a nitrogen-fixing bacteria from the genus of Sphingomonas which has been isolated from the root of a rice plant in Mishima in Japan.
Azospirillum is a Gram-negative, microaerophilic, non-fermentative and nitrogen-fixing bacterial genus from the family of Rhodospirillaceae. Azospirillum bacteria can promote plant growth.
Bradyrhizobium ottawaense is a nitrogen fixing bacterium from the genus of Bradyrhizobium which has been isolated from the nodules of soybeans in Ottawa in Canada.
