Biology:Halomonas elongata

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Short description: Species of bacterium

Halomonas elongata
Scientific classification edit
Domain: Bacteria
Phylum: Pseudomonadota
Class: Gammaproteobacteria
Order: Oceanospirillales
Family: Halomonadaceae
Genus: Halomonas
Species:
H. elongata
Binomial name
Halomonas elongata
Vreeland et al. 1980

Halomonas elongata is considered the type species of the genus Halomonas. It is a chemoorganotrophic, halophilic bacterium first isolated from a solar salt facility located in Bonaire, Netherlands Antilles.[1]

Biology and biochemistry

Morphology

Halomonas elongata cells are gram-negative rods which are motile by either polar or peritrichous flagella.[1] On a solid medium, H. elongata produce glistening, opaque white colonies that are about 2 mm in diameter.[1]

Physiology

Halomonas elongata are able to reduce NO3 to NO2 and are able to grow anaerobically in the presence of NO3.[1] 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.[1] 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.[1]

Halomonas elongata grows in a pH range of 5 to 9 and a temperature range of 4-45 °C.[1] 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%.[1]

Genomics

Halomonas elongata strains 1H9 and 1H11 have G+C contents of 60.5 %.[1] H. elongata has a total genome size of 4.06 Mb.[2]

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "Halomonas elongata, a New Genus and Species of Extremely Salt-Tolerant Bacteria". International Journal of Systematic Bacteriology 30 (2): 485–495. April 1980. doi:10.1099/00207713-30-2-485. 
  2. "A blueprint of ectoine metabolism from the genome of the industrial producer Halomonas elongata DSM 2581 T". Environmental Microbiology 13 (8): 1973–1994. August 2011. doi:10.1111/j.1462-2920.2010.02336.x. PMID 20849449. 

External links

Wikidata ☰ Q25860313 entry