1887

Abstract

A novel restricted facultatively methylotrophic marine strain, MP, possessing the ribulose monophosphate pathway of C-carbon compound assimilation was isolated from a seawater sample obtained from Mokpo, South Korea. The novel isolate is aerobic, Gram-negative, asporogenous and a non-motile short rod. It grows well on methanol, methylated amines, dimethylsulfide and DMSO. Optimal growth occurs with 3 % NaCl at 30 °C and pH 7.0. Fructose is utilized as a multicarbon source. Growth factors are not required and vitamin B does not stimulate growth. The cellular fatty acid profile of the novel strain consists primarily of straight-chain saturated C and unsaturated C acids. The major ubiquinone is Q-8. The dominant phospholipids are phosphatidylethanolamine and phosphatidylglycerol. The DNA G+C content is 44.9 mol% ( ). Based on 16S rRNA gene sequence analysis and DNA–DNA relatedness (25–41 %) with the type strains of marine methylotrophs belonging to the genus , it is suggested that isolate MP represents a novel species, sp. nov. (type strain MP=KCTC 12909=VKM B-2441=JCM 14647).

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2007-09-01
2020-10-01
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