Natronococcus
{{Short description|Genus of archaea}}
{{Automatic taxobox
| taxon = Natronococcus
| authority = Tindall et al. 1984{{citation needed|date=October 2016}}
| type_species = Natronococcus occultus
| type_species_authority = Tindall et al. 1984
| subdivision_ranks = Species
| subdivision =
- "N. aibiensis"
- N. amylolyticus
- N. jeotgali
- N. occultus
- "N. pandeyae"
- N. roseus
- "N. xinjiangense"
- "N. yunnanense"
- "N. zabuyensis"
}}
Natronococcus is a genus of archaeans in the family the Natrialbaceae.
Description and significance
This haloalkaliphilic archaeon is in the same family as microorganisms like Halobacterium. Study of Natronococcus continues to explore what enzymes are present in order to survive in these conditions, especially since there has not been much literature about enzymes of haloalkaliphiles.
Genome structure
The G + C content for the major chromosome is 64.0% while the minor component has a 55.7% content. The approximate size of the plasmid is 144 kbp.
Cell structure and metabolism
Natronococcus is a heterotrophic, aerobic organism that can use sugars as an energy source to stimulate growth. It can fix nitrogen from casamino acids and reduces nitrates to nitrites.
Cells are non-motile and occur in irregular clusters, pairs, and single cells. The cell is coccoid in shape and 1–2 micrometres in diameter. colonies are pale brown and circular.{{ cite journal | author = Tindall BJ | author2 = Ross HNM | author3 = Grant WD | date = 1984 | title = Natronobacterium gen. nov. and Natronococcus gen. nov., two new genera of haloalkaliphilic archaebacteria | journal = Syst. Appl. Microbiol. | volume = 5 | pages = 41–57 | doi = 10.1016/S0723-2020(84)80050-8 }}
Ecology
N. occultus has been isolated from the soda lake Lake Magadi. This halophilic archaeon is partial to environments with 8–30% NaCl with optimum growth at 22%. It also grows in a pH range of 8.5–11 (optimum at 9.5) and a temperature range of 20–50 °C (optimum at 40 °C).
Phylogeny
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN){{cite web|author=J.P. Euzéby |url=https://lpsn.dsmz.de/genus/natronococcus |title=Natronococcus |access-date=2023-10-10 |publisher=List of Prokaryotic names with Standing in Nomenclature (LPSN)}} and National Center for Biotechnology Information (NCBI).{{cite web |author = Sayers |display-authors=et al.| url=https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Undef&id=29287&lvl=3&keep=1&srchmode=1&unlock |title=Natronococcus |access-date=2023-10-10 |publisher=National Center for Biotechnology Information (NCBI) taxonomy database}}
See also
References
{{Reflist}}
Further reading
- {{ cite journal | author = Oren A | author2 = Ventosa A | date = 2000 | title = International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Halobacteriaceae. Minutes of the meetings, 16 August 1999, Sydney, Australia | journal = Int. J. Syst. Evol. Microbiol. | volume = 50 | issue = 3 | pages = 1405–1407 | pmid = 10843089 | doi=10.1099/00207713-50-3-1405| doi-access = free }}
External links
- [http://bacdive.dsmz.de/index.php?search=5965&submit=Search Type strain of Natronococcus occultus at BacDive - the Bacterial Diversity Metadatabase]
{{Taxonbar|from=Q6980255}}