Agaribacter flavus sp. nov., isolated from red algae Free

Abstract

A Gram-stain-negative, non-motile, aerobic, curved-rod bacterium, designated as strain 2p52, was isolated from the marine algae Gracilaria blodgettii collected off the coast of Lingshui county, in Hainan province, China. Strain 2p52 grew at 15–42 °C (optimally at 30–33 °C), at pH 6.0–10.0 (7.5–8.0) and in the presence of 1.0–8.0 % (w/v) NaCl (2.0–3.0 %). The most closely related species was Agaribacter marinus (96.5 % 16S rRNA gene sequence similarity). Phylogenetic analysis based on the sequence of the 16S rRNA gene revealed that strain 2p52 belonged to the genus Agaribacter . The novel strain contained phophatidylethanolamine and phosphatidylglycerol as the major polar lipids. The predominant isoprenoid quinine was Q-8, and the DNA G+C content was 43.2 mol%. The major cellular fatty acids were C16 : 1ω7c and/or iso-C15 : 0 2-OH, C16 : 0, and C18 : 1ω7c. The phenotypic and systematic comparative analyses indicated that the isolate is representative of a novel species of the genus Agaribacter , and the name Agaribacter flavus sp. nov. is proposed. The type strain is 2p52 (=KCTC 52473=MCCC 1H00151).

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2018-08-09
2024-03-29
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