Rhizobia are a "group of soil bacteria that infect the roots of legumes to form root nodules". [2] Rhizobia are found in the soil and, after infection, produce nodules in the legume where they fix nitrogen gas (N 2 ) from the atmosphere, turning it into a more readily useful form of nitrogen.

Rhizobia are one of several group of bacteria capable of ‘fixing’ nitrogen, i.e. converting dinitrogen gas into ammonia and then into organic molecules such as amino acids. Because of this ability, nitrogen fixing bacteria are significant conduits between an extremely large pool of nitrogen in the atmosphere and living things who otherwise ...

Rhizobium is a genus of Gram-negative soil bacteria that fix nitrogen. Rhizobium species form an endosymbiotic nitrogen-fixing association with roots of (primarily) legumes and other flowering plants. The bacteria colonize plant cells to form root nodules, where they convert atmospheric nitrogen into ammonia using the enzyme nitrogenase.

2018年1月30日 · Rhizobia are some of the best-studied plant microbiota. These oligotrophic Alphaproteobacteria or Betaproteobacteria form symbioses with their legume hosts. Rhizobia must exist in soil and...

2021年10月13日 · Rhizobia are one of several group of bacteria capable of 'fixing' nitrogen, i.e. converting dinitrogen gas into ammonia and then into organic molecules such as amino acids.

A variety of microorganisms, such as rhizospheric bacteria (including Actinobacteria, nodule endophytes, or other rhizobia), yeasts, bacteriophages, protozoa or fungi, can directly interact with rhizobia in the rhizosphere, and promote or inhibit their growth.

Biological nitrogen fixation in rhizobia occurs primarily in root or stem nodules and is induced by the bacteria present in legume plants. This symbiotic process has fascinated researchers for over a century, and the positive effects of legumes on soils and their food and feed value have been recognized for thousands of years.

2023年12月1日 · Nitrogen (N)-fixing bacteria (rhizobia) are a group of plant growth-promoting bacteria that live in symbiosis with legumes. Their interaction with legume roots results in nodules that provide plants with additional nutrients through N-fixation, making legumes ideal crops due to reduced N fertilizer requirements.

Rhizobia are bacteria that fix nitrogen inside the root and stem nodules that they incite on leguminous plants. They are phylogenetically diverse Gram-negative members of the Proteobacteria. All are facultative symbionts, and, as a group, they are very successful soil bacteria even in the absence of their host plants.

2022年8月26日 · Rhizobia are members of the family Rhizobiaceae, classically recognized as symbiotic bacteria of leguminous plants that have the characteristic feature of fixing atmospheric nitrogen (Hellriegel and Wilfarth 1888). The group comprises a large number of genera that nodulate more than 750 genera of legumes (Wojciechowski et al. 2004).