''Mesorhizobium'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

Gram-negative Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. They are characterized by their cell envelopes, which are composed of a thin peptidoglycan cell wa ...

soil Soil, also commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Some scientific definitions distinguish ''dirt'' from ''soil'' by restricting the former ...

bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were am ...

. At least one, the

nitrogen fixing Nitrogen fixation is a chemical process by which molecular nitrogen (), with a strong triple covalent bond, in the air is converted into ammonia () or related nitrogenous compounds, typically in soil or aquatic systems but also in industry. Atmo ...

species, ''Mesorhizobium loti'', forms symbiotic

root nodule Root nodules are found on the roots of plants, primarily legumes, that form a symbiosis with nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known a ...

s with plants in the genus '' Lotus''. Strain MAFF303099 of ''M. japonicum'' has been fully sequenced.

Species

Accepted Species

''Mesorhizobium'' comprises the following species: * '' M. abyssinicae'' Degefu ''et al''. 2013 * '' M. acaciae'' Zhu et al. 2015 * '' M. albiziae'' Wang ''et al''. 2007 * '' M. alhagi'' Chen ''et al''. 2010 * '' M. amorphae'' Wang ''et al''. 1999 * '' M. atlanticum'' Ferraz Helene ''et al''. 2019 * '' M. australicum'' Nandasena ''et al''. 2009 * '' M. calcicola'' De Meyer et al. 2016 * '' M. camelthorni'' Chen ''et al''. 2010 * '' M. cantuariense'' De Meyer et al. 2015 * '' M. caraganae'' Guan ''et al''. 2008 * '' M. carbonis'' Li ''et al''. 2019 * '' M. carmichaelinearum'' De Meyer ''et al''. 2019 * '' M. chacoense'' Velázquez ''et al''. 2001 * '' M. ciceri'' (Nour ''et al''. 1994) Jarvis ''et al''. 1997 * '' M. composti'' Lin ''et al''. 2020 * '' M. delmotii'' Mohamad ''et al''. 2018 * '' M. ephedrae'' Liu ''et al''. 2018 * '' M. erdmanii'' Martínez-Hidalgo ''et al''. 2015 * '' M. gobiense'' Han ''et al''. 2008 * '' M. hankyongi'' Siddiqi ''et al''. 2019 * '' M. hawassense'' Degefu ''et al''. 2013 * '' M. helmanticense'' Marcos-García ''et al''. 2017 * '' M. huakuii'' (Chen ''et al''. 1991) Jarvis ''et al''. 1997 * '' M. japonicum''Martinez-Hidalgo et al. 2016 * '' M. jarvisii'' Martínez-Hidalgo ''et al''. 2015 * '' M. kowhai'' De Meyer et al. 2016 * '' M. loti'' (Jarvis ''et al''. 1982) Jarvis ''et al''. 1997 * '' M. mediterraneum'' (Nour ''et al''. 1995) Jarvis ''et al''. 1997 * '' M. metallidurans'' Vidal ''et al''. 2009 * '' M. muleiense'' Zhang ''et al''. 2012 * '' M. newzealandense''De Meyer et al. 2016 * '' M. norvegicum'' Kabdullayeva ''et al''. 2020 * '' M. oceanicum'' Fu ''et al''. 2017 * '' M. olivaresii'' Lorite ''et al''. 2017 * '' M. opportunistum'' Nandasena ''et al''. 2009 * '' M. plurifarium'' de Lajudie ''et al''. 1998 * '' M. prunaredense'' Mohamad ''et al''. 2018 * '' M. qingshengii'' Zheng ''et al''. 2013 * '' M. robiniae'' Zhou et al. 2010 * '' M. sangaii'' Zhou ''et al''. 2013 * '' M. sanjuanii'' Sannazzaro ''et al''. 2018 * '' M. sediminum'' Yuan et al. 2016 * '' M. septentrionale'' Gao ''et al''. 2004 * '' M. shangrilense'' Lu ''et al''. 2009 * '' M. shonense'' Degefu ''et al''. 2013 * '' M. silamurunense'' Zhao ''et al''. 2012 * '' M. soli'' Nguyen et al. 2015 * '' M. sophorae'' De Meyer et al. 2016 * '' M. tamadayense'' Ramírez-Bahena ''et al''. 2012 ** symbiovar ''loti'' ** symbiovar ''tamadayense'' * '' M. tarimense'' Han ''et al''. 2008 * '' M. temperatum'' Gao ''et al''. 2004 * '' M. terrae'' Jung ''et al''. 2021 * '' M. thiogangeticum'' Ghosh and Roy 2006 * '' M. tianshanense'' (Chen ''et al''. 1995) Jarvis ''et al''. 1997 * '' M. waimense'' De Meyer et al. 2015 * '' M. waitakense'' De Meyer et al. 2016 * '' M. wenxiniae'' Zhang ''et al''. 2018

Provisional Species

The following species have been described, but not validated according to the Bacteriological Code: * "''M. alexandrii''" Yang ''et al''. 2020 * "''M. denitrificans''" Siddiqi ''et al''. 2019 * "''Candidatus'' Mesorhizobium hominis" Lo ''et al''. 2013 * "''M. hungaricum''" Crovadore ''et al''. 2016 * "''M. intechi''" Estrella ''et al''. 2020 * "''M. rhizophilum''" Gao ''et al''. 2020 * "''M. zhangyense''" Xu ''et al''. 2018

References

External links

Complete proteome of ''M. loti''
at the

Swiss Institute of Bioinformatics The SIB Swiss Institute of Bioinformatics is an academic not-for-profit foundation which federates bioinformatics activities throughout Switzerland. The institute was established on 30 March 1998 and its mission is to provide core bioinfor ...

Phyllobacteriaceae Bacteria genera {{Phyllobacteriaceae-stub