Affiliation:
1. School of Biological Sciences and Research Center for Biomolecules and Biosystems, Chung-Ang University, Seoul 156-756, Republic of Korea
Abstract
A Gram-negative, strictly aerobic, motile bacterium with flagella, designated strain G210T, was isolated from a crude-oil-contaminated tidal flat of the Taean coast in South Korea. Cells were non-spore-forming, ovoid rods showing catalase- and oxidase-positive reactions. Growth of strain G210T was observed between 15 and 45 °C (optimum, 30–35 °C) and between pH 5.5 and 9.0 (optimum, pH 6.5–7.5). Strain G210T contained Q-10 as the sole isoprenoid quinone and summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c) and C19 : 0 cyclo ω8c as the major fatty acids. Putrescine and spermidine were identified as the major polyamines. Strain G210T contained phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylcholine, phosphatidylmonomethylethanolamine, an unidentified phospholipid and an unidentified aminolipid as polar lipids. The G+C content of the genomic DNA was 56.9 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain G210T formed a phyletic lineage with members of the genus
Aquamicrobium
. Strain G210T was most closely related to
Aquamicrobium ahrensii
905/1T (97.9 % similarity). The DNA–DNA relatedness between strain G210T and the type strain of
A. ahrensii
was 24±0.5 %. On the basis of phenotypic, chemotaxonomic and molecular properties, strain G210T represents a novel species within the genus
Aquamicrobium
, for which the name Aquamicrobium aestuarii sp. nov. is proposed. The type strain is G210T ( = KACC 14931T = JCM 16876T).
Funder
Program for Collection of Domestic Biological Resources from the National Institute of Biological Resources (NIBR), Korea
Korean Government
National Research Foundation of Korea
Subject
General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology
Cited by
21 articles.
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