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Azospirillum brasilense is a well studied, nitrogen-fixing (diazotroph), genetically tractable, Gram-negative, alpha-proteobacterium bacterium, first described in Brazil by the group of Johanna Döbereiner and then receiving the name "brasilense". A. brasilense is able to fix nitrogen in the presence of low oxygen levels, making it a microaerobic diazotroph. An isolate from the genus Azospirillum was isolated from nitrogen poor soils in the Netherlands in 1925, however the species A. brasilense was first described in 1978 in Brazil, since this genus is widely found in the rhizospheres of grasses around the world where it confers plant growth promotion. Whether growth promotion occurs through direct nitrogen flux from the bacteria to the plant or through hormone regulation is debated. The two most commonly studied strains are Sp7 and Sp245, both are Brazilian isolates isolated from Tropical grasses from Seropedica, Brazil.
Roseomonas is a genus of Gram negative bacteria. The cells are coccoid rods when viewed microscopically. Certain species are known to be opportunistic infections for humans.
Roseomonas aerofrigidensis is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pink-colored bacterium. The bacteria was isolated first isolated from a laboratory air-conditioning system in South Korea, and the new species name was proposed in 2017. Another species of Roseomonas, R. aeriglobus, was also isolated from an air conditioner.
Roseomonas aerophila is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pink-colored bacterium. It was first isolated from an air sample in Taean County, South Korea, and the new species was proposed in 2013. The species name comes from Latin aer (air) and philos (loving). Another species of Roseomonas, R. aerilata, was also isolated from the air in a different region of South Korea.
Roseomonas arctica is a species of Gram negative, strictly aerobic, coccobacilli-shaped, psychrotrophic, light red-colored bacteria. It was first isolated from soil in the glacier foreland of Ny-Ålesund in Svalbard, Norway. The species name refers to the Arctic region from which it was first isolated.
Roseomonas arcticisoli is a species of Gram negative, strictly aerobic, coccobacilli-shaped, light red-colored bacteria. It was first isolated from tundra soil near Ny-Ålesund in Svalbard, Norway. The species name refers to the Arctic soil from which it was first isolated.
Roseomonas eburnea is a species of Gram negative, strictly aerobic, coccobacilli-shaped, ivory-colored bacterium. It was first isolated from activated sludge from an herbicide-manufacturing wastewater treatment facility in Jiangsu province, China, and the species was first proposed in 2016. R. eburnea, unlike most species of Roseomonas which are pink or light red, is ivory-pigmented. The species name comes from Latin eburnea. R. chloroacetimidivorans was isolated at the same time as R. eburnea.
Roseomonas hibiscisoli is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pink-colored bacteria. It was first isolated from the rhizosphere of a Hibiscus syriacus plant, and the new species was proposed in 2017. The species name derives from the Hibiscus plant from which it was first isolated. Roseomonas rhizosphaerae was also previously isolated from the rhizosphere of a plant.
Roseomonas ludipueritiae is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pale yellow-colored bacteria. It was first isolated from a children's day care center in 1995. Further work on the isolate led to the proposal of a new genus and species, Teichococcus ludipueritiae in 2003. Further work on T. ludipueritiae found that the species belonged in the genus Roseomonas, and also led to Muricoccus roseus being reclassified as Roseomonas rosea. The species name is derived from Latin ludus (garden) and pueritia (boyhood), referring to the kindergarten day care from which the species was first isolated.
Roseomonas rosea is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pink-colored bacteria. It was first isolated from a children's day care center in 1995. Further work on the isolate led to the proposal of a new genus and species, Muricoccus roseus in 2003. Further work on M. roseus found that the species belonged in the genus Roseomonas, and also led to Teichococcus ludipueritiae being reclassified as Roseomonas ludipueritiae in 2009. The new name for the species is Roseomonas rosea. The species name is derived from Latin rosea (pink), referring to the pink color the bacterial colonies will form, which is also a present in most Roseomonas species.
Roseomonas nepalensis is a species of Gram negative, strictly aerobic, coccobacilli-shaped, wine-red-colored bacterium. It was first isolated from oil-contaminated soil from Biratnagar, Nepal. The name is derived from the country from which it was first isolated.
Roseomonas pecuniae is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pinkish-red-colored bacterium. It was first isolated from the surface of a 50 Euro cent copper-alloy coin, and the species was first proposed in 2011. The species name comes from Latin pecuniae.
Roseomonas rhizosphaerae is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pink-colored bacterium. It was first isolated from soil under long-term application of triazofos in Yangzhou, Jiangsu province, China, and the species was first proposed in 2011. The species name refers to the rhizosphere from which it was first isolated.
Roseomonas riguiloci is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pinkish-red-colored bacterium. It was first isolated from freshwater from the Woopo wetland in Gyeongnam Province, South Korea and the species was first proposed in 2012. The species name is derived from Latin riguus (well-watered) and locus.
Roseomonas rubra is a species of Gram negative, strictly aerobic, coccobacilli-shaped, red-colored bacterium. It was first isolated from lagoon sediments located near North Carolina State University in 2015, and the species was first proposed in 2016. The species name comes from Latin rubra (red), referring to the color that the bacterial colonies form.
Roseomonas stagni is a species of Gram-negative, strictly aerobic, coccobacilli-shaped, pink-colored bacterium. It was first isolated from sediment from pond water in Shizuoka, Japan, and the species was first proposed in 2008. The species name is derived from Latin stagni.
Roseomonas suffusca is a species of Gram negative, strictly aerobic, coccobacilli-shaped, light brown-colored bacterium. It was first isolated from lagoon sediments located near North Carolina State University in 2015, and the species was first proposed in 2017. The species name comes from Latin suffusca (brownish), referring to the color that the bacterial colonies form, as opposed to the pink coloration of most members of the genus Roseomonas.
Roseomonas terrae is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pale yellow to pale pink-pigmented bacterium. It was first isolated from a soil sample collected from the island of Liancourt Rocks in South Korea. The new species name was first proposed in 2007 and derives from Latin terrae.
Roseomonas vinacea is a species of Gram negative, strictly aerobic, coccobacilli-shaped, wine-red-colored bacterium. It was first isolated from a soil sample collected from the Tibetan Plateau, China, and the species was first proposed in 2008. The species name is derived from Latin vinacea, referring to the color that the bacterial colonies form.
Roseomonas gilardii is a species of Gram negative, strictly aerobic, coccobacilli-shaped, pink-pigmented bacterium. It is the type species of the genus Roseomonas. The new species was among the first Roseomonas species proposed in 1993, and is named for "Gerald L. Gilardi for his many contributions to bacteriology and, specifically, for his contributions in the area of glucose-nonfermenting gram-negative rods." R. gilardii is pathogenic for humans, causing bacteremia and other infections.
References
- ↑ Han XY, Pham AS, Tarrand JJ, Rolston KV, Helsel LO, Levett PN. Bacteriologic characterization of 36 strains of Roseomonas species and proposal of Roseomonas mucosa sp nov and Roseomonas gilardii subsp rosea subsp nov. American Journal of Clinical Pathology. 2003 Aug 1;120(2):256-64.
- ↑ "Bacteria therapy for eczema shows promise in NIH study". National Institutes of Health (NIH). 2018-05-03. Retrieved 2019-02-10.