Rhizobium leguminosarum

Rhizobium leguminosarum
Scientific classification Edit this classification
Domain: Bacteria
Phylum: Pseudomonadota
Class: Alphaproteobacteria
Order: Hyphomicrobiales
Family: Rhizobiaceae
Genus: Rhizobium
Species:
R. leguminosarum
Binomial name
Rhizobium leguminosarum
(Frank 1879) Frank 1889 (Approved Lists 1980)
Type strain
ATCC 10004[1]
LMG 14904
strain 3Hoq18
USDA 2370
Biovars
  • symbiovar trifolii
  • symbiovar viciae
Synonyms[1]
  • Rhizobium trifolii Dangeard 1926 (Approved Lists 1980)

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.[2] R. leguminosarum has been very thoroughly studied—it has been the subject of more than a thousand publications.[2]

Morphology

Rhizobium leguminosarum is a Gram-negative, motile, rod-shaped, aerobic bacterium.[3]

Common biovars

Rhizobium 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.[4]

Fatty acid synthesis

Rhizobium leguminosarum's acyl carrier protein differs from most ACPs by having a C-terminus extension. This ACP is also used in the synthesis of unusually long ACPs which themselves are then used in the synthesis of the R. leguminosarum nod factor.[5]

Uses

R. leguminosarum is widely used in the inoculation of legume seeds. The sv. trifolii strain U204 is commercially used to inoculate white and red clover in particular, but better strains for this purpose are being developed.[6]

Research has been carried out into the role that R. leguminosarum could play in promoting growth of canola and lettuce.[7]

References

  1. ^ a b Euzéby, JP; Parte, AC. "Rhizobium leguminosarum". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved May 28, 2021.
  2. ^ 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. doi:10.1186/gb-2006-7-4-r34. PMC 1557990. PMID 16640791.
  3. ^ "Rhizobium leguminosarum". Biology Online Dictionary. Retrieved 8 December 2015.
  4. ^ 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. 257 (2): 395–402. doi:10.1046/j.1432-1327.1998.2570395.x. PMID 9826185.
  5. ^ White, Stephen W.; Zheng, Jie; Zhang, Yong-Mei; Rock, Charles O. (2005). "The Structural Biology of Type II Fatty Acid Biosynthesis". Annual Review of Biochemistry. 74 (1). Annual Reviews: 791–831. doi:10.1146/annurev.biochem.74.082803.133524. ISSN 0066-4154. (COR ORCID 0000-0001-8648-4189).
  6. ^ Irisarri, Pilar; Cardozo, Gerónimo; Tartaglia, Carolina; Reyno, Rafael; Gutiérrez, Pamela; Lattanzi, Fernando A.; Rebuffo, Mónica; Monza, Jorge (23 April 2019). "Selection of Competitive and Efficient Rhizobia Strains for White Clover". Frontiers in Microbiology. 10: 768. doi:10.3389/fmicb.2019.00768. PMC 6489563.
  7. ^ 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. doi:10.1139/m96-040. PMID 8868235.


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