Natronococcus
Scientific classification
Domain:
Archaea
Kingdom:
Euryarchaeota
Phylum:
Euryarchaeota
Class:
Halobacteria
Order:
Natrialbales
Family:
Natrialbaceae
Genus:
Natronococcus

Tindall et al. 1984
Type species
Natronococcus occultus
Tindall et al. 1984
Species

In taxonomy, Natronococcus is a genus of the Natrialbaceae.[1]

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.[2]

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)[3] and National Center for Biotechnology Information (NCBI).[1]

16S rRNA based LTP_06_2022[4][5][6] 53 marker proteins based GTDB 08-RS214[7][8][9]
Natronococcus

N. amylolyticus

N. jeotgali

N. occultus
Natronococcus

N. pandeyae Kajale et al. 2022

N. amylolyticus Kanai et al. 1995

N. jeotgali Roh et al. 2007

N. occultus Tindall et al. 1984

See also

References

  1. 1 2 Sayers; et al. "Natronococcus". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2023-10-10.
  2. ↑ Tindall BJ; Ross HNM; Grant WD (1984). "Natronobacterium gen. nov. and Natronococcus gen. nov., two new genera of haloalkaliphilic archaebacteria". Syst. Appl. Microbiol. 5: 41–57. doi:10.1016/S0723-2020(84)80050-8.
  3. ↑ J.P. Euzéby. "Natronococcus". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2023-10-10.
  4. ↑ "The LTP". Retrieved 10 May 2023.
  5. ↑ "LTP_all tree in newick format". Retrieved 10 May 2023.
  6. ↑ "LTP_06_2022 Release Notes" (PDF). Retrieved 10 May 2023.
  7. ↑ "GTDB release 08-RS214". Genome Taxonomy Database. Retrieved 10 May 2023.
  8. ↑ "ar53_r214.sp_label". Genome Taxonomy Database. Retrieved 10 May 2023.
  9. ↑ "Taxon History". Genome Taxonomy Database. Retrieved 10 May 2023.

Further reading

Scientific journals

Scientific books

  • Gibbons, NE (1974). "Family V. Halobacteriaceae fam. nov.". In RE Buchanan; NE Gibbons (eds.). Bergey's Manual of Determinative Bacteriology (8th ed.). Baltimore: The Williams & Wilkins Co.

Scientific databases

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