N atranaerobius

Abstract

Natr.an.ae.ro'bi.us. N.L. n. natron derived from the Arabic natrun soda (sodium carbonate); Gr. pref. an not; Gr. masc. or fem. n. aer air; Gr. masc. n. bios life; N.L. masc. n. Natranaerobius a soda‐requiring anaerobe. Firmicutes / Clostridia / Natranaerobiales / Natranaerobiaceae / Natranaerobius The genus Natranaerobius currently consists of two species, Natranaerobius thermophilus (the type species) and Natranaerobius trueperi . Members of the genus are straight or slightly curved rods, nonmotile, and obligately anaerobic. They are chemoorganotrophic and ferment carbohydrates to acetate and formate. They are extremely halophilic, obligately alkaliphilic, and thermophilic. The cell wall is Gram‐type‐positive but lacks significant amounts of meso ‐diaminopimelic acid and murein. Endospores are not observed. The Natranaerobius are found in the anaerobic sediments of hypersaline soda lakes. DNA G + C content (mol%) : 40–41 (HPLC), 33–36.4% (genome sequence). Type species : Natranaerobius thermophilus Mesbah, Hedrick, Peacock, Rohde and Wiegel 2007b, 2511 VP .