Acidilobus aceticus

Acidilobus aceticus is a thermoacidophilic (that is, both thermophilic and acidophilic) species of anaerobic archaea. The species was originally described in 2000 after being isolated from hot springs in Kamchatka. It is the type species of the genus Acidilobus.[2][3]

Acidilobus aceticus
Scientific classification
Domain:
Archaea
Phylum:
Thermoproteota
Class:
Thermoprotei
Order:
Acidilobales
Family:
Acidilobaceae
Genus:
Acidilobus
Species:
A. aceticus
Binomial name
Acidilobus aceticus
Prokofeva et al., 2000[1][2]

Description

A. aceticus has a coccoid morphology of 1-2 μm diameter with a relatively thick S-layer. A. aceticus has an optimal growth temperature of 85°C (qualifying it as a hyperthermophile) and an optimal pH of 3.8. It is a non-motile obligate anaerobe with fermentative metabolism characterized by production of acetate under cell culture conditions tested; its name recognizes this property. Although its growth is accelerated by the presence of elemental sulfur, which is reduced to hydrogen sulfide, sulfur is not essential for growth. It is resistant to the antibiotics chloramphenicol, penicillin and streptomycin. A. aceticus differs from A. saccharovorans, the only other recognized species in the genus, in two major respects: it is non-motile whereas A. saccharovorans is flagellated; and it is capable of growth on a much narrower range of substrates.[2][3]

References
  1. "Acidilobus aceticus". Integrated Taxonomic Information System. Retrieved 10 June 2016.
  2. Prokofeva, MI; Miroshnichenko, ML; Kostrikina, NA; Chernyh, NA; Kuznetsov, BB; Tourova, TP; Bonch-Osmolovskaya, EA (November 2000). "Acidilobus aceticus gen. nov., sp. nov., a novel anaerobic thermoacidophilic archaeon from continental hot vents in Kamchatka". International Journal of Systematic and Evolutionary Microbiology. 50 Pt 6 (6): 2001–8. doi:10.1099/00207713-50-6-2001. PMID 11155973.
  3. Prokofeva, Maria; Merkel, Alexander; Lebedinsky, Alexander; Bonch-Osmolovskaya, Elisaveta (2014). "The Family Acidilobaceae". The Prokaryotes: Other Major Lineages of Bacteria and the Archaea: 9–14. doi:10.1007/978-3-642-38954-2_332. ISBN 978-3-642-38953-5.
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