1887

Abstract

Abstract

B-1 (= OCM 438) (T = type strain) was isolated from Arabian Sea sediments obtained near Bombay, India. This strain grew on methylamines, methanol, and dimethyl sulfide, but it did not catabolize H-CO, acetate, or formate. The cells were nonmotile, irregular coccoids (diameter, 1.0 to 1.5 µm) and occurred singly. Electron micrographs revealed that a cell membrane and a protein cell wall were present. The cells grew fastest at mesophilic temperatures, at a neutral pH, and at salinity levels near the salinity level of the ocean, and they required about 30 mM divalent cations (Mg and Ca). The cells grew in mineral medium, but growth was greatly stimulated by yeast extract and peptones. The guanine-plus-cytosine content of the DNA was 39.2 ± 0.1 mol%. A comparison of 16S rRNA sequences showed that strain B-1 was phylogenetically related to but the sequences of these organisms differed by 2%.

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1994-10-01
2022-12-09
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