Listeria grayi | |
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Scientific classification | |
Domain: | Bacteria |
Phylum: | Bacillota |
Class: | Bacilli |
Order: | Bacillales |
Family: | Listeriaceae |
Genus: | Listeria |
Species: | L. grayi
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Binomial name | |
Listeria grayi Larsen et al. 1966[1]
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Listeria grayi is a species of bacteria. It is a Gram-positive, facultatively anaerobic, motile, non-spore-forming bacillus. It is non-hemolytic. The species was first proposed in 1966. It is named after M.L. Gray, an early researcher in L. monocytogenes[2] There are two subspecies of L. grayi: L. gray subs. grayi, and L. grayi subsp. murrayi.[3]
Listeria murrayi (named after a co-founder of L. monocytogenes) was originally a separate species of Listeria when proposed in 1971.[4] However, there was controversy over whether L. grayi and L. murrayi were the same species, or belonged in genus Listeria altogether. In 1974, researchers suggested that a new genus be created for the two species, called, Murraya,[5] although furthers studies by other researchers in 1987 proposed that the two species remain in Listeria.[6] In 1996, further studies showed that L. murrayi was a subspecies of L. grayi.[2]