Brachybacterium is a genus of Gram positive, nonmotile bacteria. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. The genus name comes from Greek word brachy, meaning short, and Latin bacterium, meaning rods, referencing the short rods noted during the exponential phase.
Brachybacterium alimentarium is a species of Gram positive, facultatively anaerobic, yellow-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from the surfaces of Beaufort and Gruyère cheeses in 1978. Further work led to the proposal of the new species in 1996, and the name is derived from the Latin alimentanium.
Brachybacterium tyrofermentans is a species of Gram positive, facultatively anaerobic, pale yellow-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from the surfaces of Beaufort and Gruyère cheeses in 1978, along with Brachybacterium alimentarium. Further work led to the proposal of the new species in 1996, and the name is derived from the Latin tyros (cheese) and fermentans (leavening), referring to the fermented cheese from which it was first isolated.
Brachybacterium aquaticum is a species of Gram positive, strictly aerobic, pale yellow-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from a seawater sample collected from the coastal region of Kovalam, India off the Indian Ocean. The name is derived from Latin aquaticum.
Brachybacterium conglomeratum is a species of Gram positive, facultatively anaerobic, whitish yellow to pale brown pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. The species was originally classified as Micrococcus conglomeratus for over 60 years, until most species were reclassified as Brachybacterium conglomeratum in 1995. The name is derived from Latin conglomeratum.
Brachybacterium paraconglomeratum is a species of Gram positive, facultatively anaerobic, pale brown pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. The species was identified when a strain of Brachybacterium faecium was found to be a different species of Brachybacterium. The name is derived from Latin para and conglomeratum. B. paraconglomeratum resembles Brachybacterium conglomeratum phenotypically, and but are separate species based on DNA–DNA hybridization. B. paraconglomeratum and B. conglomeratum were first proposed as species in the same paper in 1995, along with B. rhamnosum.
Brachybacterium faecium is a species of Gram positive, facultatively anaerobic bacterium. Colony pigmentation is grey, white, or pale yellow. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from poultry deep litter in 1966. The species was the first proposed for genus Brachybacterium in 1988, and is the type strain for the genus. The name is derived from the Latin faecium, referring to the poultry litter from which it was first isolated.
Brachybacterium fresconis is a species of Gram positive, strictly aerobic, cream-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from a medieval wall painting of the chapel of Schloss Herberstein in Styria, Austria. The species was proposed in 2014, and the name is derived from the fact it was first isolated from a fresco.
Brachybacterium ginsengisoli is a species of Gram positive, strictly aerobic, opaque bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from soil in a ginseng field in Yeoncheon County, South Korea. The species was first described in 2014, and the name is derived from the Latin ginsengum (ginseng) and solum (soil).
Brachybacterium horti is a species of Gram positive, facultatively anaerobic, white-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from soil from a garden in the Guro District of Seoul, South Korea. The species was first described in 2016, and the name is derived from the Latin horti.
Brachybacterium huguangmaarense is a species of Gram positive, strictly aerobic, orange-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from a lake sediment sample from Huguangyan Maar Lake collected in Zhanjiang, Guangdong Province, China. The species was first described in 2014, and the name is derived from the location from which the organism was first isolated.
Brachybacterium muris is a species of Gram positive, strictly aerobic, yellow-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from the liver of a laboratory mouse. The species was first described in 2003, and the name is derived from the Latin muris (mouse).
Brachybacterium nesterenkovii is a species of Gram positive, facultatively anaerobic, yellow-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from milk products in 1984. The species was first described in 1992, and is named for O. A. Nesterenko, "a Ukrainian microbiologist who has made a valuable contribution to the systematics of coryneform and nocardioform bacteria".
Brachybacterium phenoliresistens is a species of Gram positive, facultatively anaerobic, yellow-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from oil-contaminated sand in Pingtung County, Taiwan. The species was first described in 2007, and its name refers to the species' ability to resist phenol. It is most closely related to B. nesterenkovii.
Brachybacterium sacelli is a species of Gram positive, strictly aerobic, cream-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from a medieval wall painting of the chapel of Schloss Herberstein in Styria, Austria. The species was proposed in 2014, and the name is derived from Latin sacelli. Another novel species B. fresconis was isolated from the same painting.
Brachybacterium saurashtrense is a species of Gram positive, strictly aerobic, halotolerant, pale yellow-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from roots of Salicornia brachiate plants collected from coastal marshy swamps, in Bhavnagar, Gujarat, India. The species was first proposed in 2011, and the name is derived from Saurashtra, the region where it was first isolated.
Brachybacterium squillarum is a species of Gram positive, strictly aerobic, halotolerant, yellow-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from salt-fermented seafood from South Korea. The species was first proposed in 2011, and the name is derived from Latin squillarum.
Brachybacterium zhongshanense is a species of Gram positive, facultatively anaerobic, halotolerant, cream-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from sediment along the Qijiang River, Zhongshan, China. The species was first proposed in 2011, and the name refers to the city from which it was first isolated.
Brachybacterium endophyticum is a species of Gram positive, facultatively anaerobic, halotolerant, cream-pigmented bacterium. The cells are coccoid during the stationary phase, and irregular rods during the exponential phase. It was first isolated from surface-sterilized bark of Scutellaria baicalensis from Guizhou, China. The species was first proposed in 2018, and the name refers to the fact that the bacteria is likely an endophyte.
