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Scientific classification
Domain: Archaea
Kingdom: Euryarchaeota
Phylum: Euryarchaeota
Class: Halobacteria
Order: Halobacteriales
Family: Methanobacteriaceae
Genus: Haloferax
Binomial name
Torreblanca et al. 1986

In taxonomy, Haloferax is a genus of the Halobacteriaceae.

Description and significance[edit]

Genome structure[edit]

Cell structure and metabolism[edit]


Genetic exchange[edit]

Cells of Haloferax mediterranei and cells of the related species Haloferax volcanii can undergo a process of genetic exchange between two cells of the same species which involves cell fusion resulting in a heterodiploid cell (containing two different chromosomes in one cell).[1] Although this genetic exchange ordinarily occurs between two cells of the same species, it can also occur at a lower frequency between an H. mediterranei and an H. volcani cell. These two species have an average nucleotide sequence identity of 86.6%.[1] During this exchange process a diploid cell is formed that contains the full genetic repertoire of both parental cells, and genetic recombination is facilitated. Subsequently, the cells separate, giving rise to recombinant cells.

DNA damage and repair[edit]

See also[edit]


  1. ^ a b Naor A, Lapierre P, Mevarech M, Papke RT, Gophna U (August 2012). "Low species barriers in halophilic archaea and the formation of recombinant hybrids". Curr. Biol. 22 (15): 1444–8. doi:10.1016/j.cub.2012.05.056. PMID 22748314. 

Further reading[edit]

Scientific journals[edit]

  • Oren A, Ventosa A (2000). "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Halobacteriaceae. Minutes of the meetings, 16 August 1999, Sydney, Australia". Int. J. Syst. Evol. Microbiol. 50: 1405–1407. PMID 10843089. 
  • Torreblanca M, Rodriquez-Valera F, Juez G, Ventosa A, Kamekura M, Kates M (1986). "Classification of non-alkaliphilic halobacteria based on numerical taxonomy and polar lipid composition, and description of Haloarcula gen. nov. and Haloferax gen.nov". Syst. Appl. Microbiol. 8: 89–99. doi:10.1016/s0723-2020(86)80155-2. 

Scientific books[edit]

  • Gibbons, NE (1974). "Family V. Halobacteriaceae fam. nov.". In RE Buchanan and NE Gibbons, eds. Bergey's Manual of Determinative Bacteriology (8th ed.). Baltimore: The Williams & Wilkins Co. ISBN 0-683-01117-0. 

Scientific databases[edit]

External links[edit]