Identification of Marine Methanol-utilizing Bacteria

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A taxonomical study of 65 marine methanol-utilizing bacteria is described. They were Gram-negative, non-spore-forming rods with a polar flagellum and had marine bacterial properties and required vitamin B_<12> for growth. All of them assimilated methanol and formaldehyde but did not assimilate methane. Forty-one strains assimilated fructose in addition to C_1-compounds and produced acid oxidatively from fructose. Twenty-four strains assimilated only C_1-compounds. They were resistant to penicillin, oxytetracycline and 0/129 substance (Vibrio stat), and tolerant to 12% NaCl.Guaninecytosine contents of deoxyribonucleic acid in typical strains fell in the range of 43.8 to 47.6%. Other morphological and physiological properties were almost the same as those of terrestrial methanol-utilizers. Bacteria in the first group (41 strains) were facultative methylotrophs and were divided into three subgroups by the assimilation of methylated amines, that is, subgroup I (30 strains) assimilated mono-, di- and tri-methylamine, subgroup II (9 strains) assimilated only mono-methylamine, the bacteria of subgroups I and II were named Alteromonas thalassomethanolica sp. nov. and subgroup III (2 strains) did not assimilate methylated amines, and was tentatively assigned as Alteromonas sp. The second group of bacteria (24 strains) was obligate methylotrophs, named Methylomonas thalassica sp. nov. and was divided into subgroup IV (15 strains) which assimilated mono-, di- and tri-methylamine and subgroup V (9 strains) which assimilated mono-methylamine.
公益社団法人日本生物工学会の論文
1980-04-25

Identification of Marine Methanol-utilizing Bacteria

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