Open AccessExtremely halophilic, methylotrophic, anaerobic bacteria
Author(s) -
Zhilina Tatya.,
Zavarzin George A.
Publication year - 1990
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1990.tb04930.x
Subject(s) - halophile , methanogenesis , halomonas , betaine , trimethylamine , euryarchaeota , archaea , bacteria , biology , salinity , formate , environmental chemistry , chemistry , biochemistry , ecology , genetics , catalysis
Abstract Extremely halophilic methanogens and a rodshape homo‐acetogen were isolated from cyanobacterial mats of Sivash, Crimea. Trimethylamine served as a single source of energy for both groups. Methanogenic strains obtained constitute a continuum of forms, from moderately halophilic to those living at salt saturation. A new homo‐acetogen, Acetohalobium arabaticum growing in the salinity range of 10–25% produced acetate, mono‐, di‐ and trimethylamines from betaine. A limited number of substrates including formate, H 2 + CO 2 , CO, lactate, pyruvate and hystidine was utilized. A trophic chain is discussed for methanogenesis in hypersaline environments.