Rhizobium leguminosarum

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Rhizobium leguminosarum
Scientific classification
Kingdom: Bacteria
Phylum: Proteobacteria
Class: Alphaproteobacteria
Order: Rhizobiales
Family: Rhizobiaceae
Genus: Rhizobium
Species: R. leguminosarum
Binomial name
Rhizobium leguminosarum

Rhizobium leguminosarum is a bacterium which lives in a mutualistic symbiotic relationship with legumes, and has the ability to fix free nitrogen from the air.[1] R. leguminosarum has been very thoroughly studied--it has been the subject of more than a thousand publications.[1]


Rhizobium leguminosarum is a Gram-negative, motile, rod-shaped, aerobic bacterium.[2]

Common biovars[edit]

R. leguminosarum biovar trifolii, and R. leguminosarum biovar viciae are the most commonly studied biovars of R. leguminosarum, with certain studies seemingly treating R. trifolii as its own species.[3]


Research has been carried out into the role that R. leguminosarum could play in promoting growth of canola and lettuce.[4]


  1. ^ a b Young, J Peter W; Crossman, Lisa C; Johnston, Andrew WB; Thomson, Nicholas R; Ghazoui, Zara F; Hull, Katherine H; Wexler, Margaret; Curson, Andrew RJ; Todd, Jonathan D; Poole, Philip S; Mauchline, Tim H; East, Alison K; Quail, Michael A; Churcher, Carol; Arrowsmith, Claire; Cherevach, Inna; Chillingworth, Tracey; Clarke, Kay; Cronin, Ann; Davis, Paul; Fraser, Audrey; Hance, Zahra; Hauser, Heidi; Jagels, Kay; Moule, Sharon; Mungall, Karen; Norbertczak, Halina; Rabbinowitsch, Ester; Sanders, Mandy; Simmonds, Mark; Whitehead, Sally; Parkhill, Julian (2006). "The genome of Rhizobium leguminosarum has recognizable core and accessory components". Genome Biology. 7 (4): R34. PMC 1557990Freely accessible. PMID 16640791. doi:10.1186/gb-2006-7-4-r34. 
  2. ^ "Rhizobium leguminosarum". Biology Online Dictionary. Retrieved 8 December 2015. 
  3. ^ An, JH; Kim, YS (15 October 1998). "A gene cluster encoding malonyl-CoA decarboxylase (MatA), malonyl-CoA synthetase (MatB) and a putative dicarboxylate carrier protein (MatC) in Rhizobium trifolii--cloning, sequencing, and expression of the enzymes in Escherichia coli.". European Journal of Biochemistry / FEBS. 257 (2): 395–402. PMID 9826185. doi:10.1046/j.1432-1327.1998.2570395.x. 
  4. ^ Noel, TC; Sheng, C; Yost, CK; Pharis, RP; Hynes, MF (March 1996). "Rhizobium leguminosarum as a plant growth-promoting rhizobacterium: direct growth promotion of canola and lettuce.". Canadian journal of microbiology. 42 (3): 279–83. PMID 8868235. doi:10.1139/m96-040.