''Halomonas elongata'' is considered the type species of the genus ''

Halomonas ''Halomonas'' is a genus of halophilic (salt-tolerating) bacteria. It grows over the range of 5 to 25% NaCl. The type species of this genus is '' Halomonas elongata''. Description Members of ''Halomonas'' are Gram-negative, rod-shaped bacteria, ...

''. It is a chemoorganotrophic,

halophilic The halophiles, named after the Greek word for "salt-loving", are extremophiles that thrive in high salt concentrations. While most halophiles are classified into the domain Archaea, there are also bacterial halophiles and some eukaryotic species, ...

bacterium Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were a ...

first isolated from a solar salt facility located in Bonaire, Netherlands Antilles.

Biology and biochemistry

Morphology

''Halomonas elongata'' cells are gram-negative rods which are motile by either polar or peritrichous flagella. On a solid medium, ''H. elongata'' produce glistening, opaque white colonies that are about 2 mm in diameter.

Physiology

''Halomonas elongata'' are able to reduce NO₃ to NO₂ and are able to grow anaerobically in the presence of NO₃. Cells of ''H. elongata'' are capable of utilizing malonate, fermenting glucose, and oxidizing glycerol, sucrose, mannose and cellobiose. Most strains of ''H. elongata'' can also oxidize lactose and gluconate. All strains are susceptible to HgCl₂ and chloromycetin but have only a slight susceptibility to other antibiotics like penicillin, streptomycin, tetracycline, ampicillin, vibriostat O/129, novobiocin, neomycin, bacitracin and nalidixic acid. ''Halomonas elongata'' grows in a pH range of 5 to 9 and a temperature range of 4-45 °C. The optimum temperature being 30 °C. These organisms are also able to grow over a wide range of salt concentrations. All nine isolates first found at the Bonaire, Netherlands Antilles solar salt facility were capable of surviving in salt concentrations from 3.5 to 20%.

Genomics

''Halomonas elongata'' strains 1H9 and 1H11 have G+C contents of 60.5 %. ''H. elongata'' has a total genome size of 4.06 Mb.

References

External links

* {{Taxonbar, from=Q25860313 Oceanospirillales