Rhizobiaceae
The Rhizobiaceae is a family of Pseudomonadota comprising multiple subgroups that enhance and hinder plant development. Some bacteria found in the family are used for plant nutrition and collectively make up the rhizobia. Other bacteria such as Agrobacterium tumefaciens and Rhizobium rhizogenes severely alter the development of plants in their ability to induce crown galls or hairy roots, respectively. The family has been of an interest to scientists for centuries in their ability to associate with plants and modify plant development. The Rhizobiaceae are, like all Pseudomonadota, Gram-negative. They are aerobic, and the cells are usually rod-shaped. Many species of the Rhizobiaceae are diazotrophs which are able to fix nitrogen and are symbiotic with plant roots.
Genera
Rhizobiaceae comprises the following genera:Agrobacterium Conn 1942 Allorhizobium de Lajudie et al. 1998Ciceribacter Kathiravan et al. 2013Endobacterium Menéndez et al. 2021Ensifer Casida 1982- Ferirhizobium corrig. Romanenko et al. 2024Gellertiella Tóth et al. 2017Georhizobium Cao et al. 2020Hoeflea Peix et al. 2005Lentilitoribacter Park et al. 2013Liberibacter Fagen et al. 2014Martelella Rivas et al. 2005Mycoplana Gray and Thornton 1928
- "Neopararhizobium" Hördt et al. 2020Neorhizobium Mousavi et al. 2015
- "Onobrychidicola" Ashrafi et al. 2022Pararhizobium Mousavi et al. 2016Peteryoungia Rahi et al. 2021Pseudorhizobium Kimes et al. 2017Rhizobium Frank 1889 Shinella An et al. 2006Sinorhizobium Chen et al. 1988Xaviernesmea Kuzmanović et al. 2022