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  • Title: Flammeovirga agarivorans sp. nov., an agar-digesting marine bacterium isolated from surface seawater.
    Author: Wang X, Guo F, Tian P, Yu S, Xue CX, Wang W, Xiao J, Niu W.
    Journal: Int J Syst Evol Microbiol; 2020 Dec; 70(12):6060-6066. PubMed ID: 33095697.
    Abstract:
    A Gram-stain-negative, aerobic, gliding, reddish-orange-coloured, rod-shaped strain, designated SR4T, was isolated from surface seawater sampled at Luhuitou fringing reef (South China Sea). Phylogenetic analyses based on the 16S rRNA gene, phylogenomic analysis of single-copy gene families and whole genome data affiliated it to the genus Flammeovirga. It was most closely related to Flammeovirga yaeyamensis NBRC 100898T (97.99 % 16S rRNA gene similarity). The genome average nucleotide identity and DNA-DNA relatedness values between strain SR4T and its reference strains were less than 74.2 and 16.3 %, respectively. Growth occurred at 20-35 °C (optimum, 28 °C), pH 6.0-9.0 (optimum, pH 7.0) and in the presence of 1-6 % (w/v) NaCl (optimum, 2-4 %). The dominant fatty acids were C16 : 0, iso-C15 : 0 and C20 : 4  ω6,9,12,15c. The polar lipid profile of strain SR4T comprised phosphatidylethanolamine, two glycolipids, two aminophospholipids and three unidentified lipids. The major respiratory quinone was MK-7. The DNA G+C content of strain SR4T was 34.20 mol%. On the basis of the polyphasic evidence, strain SR4T is proposed as representing a novel species of the genus Flammeovirga, for which the name Flammeovirga agarivorans sp. nov. is proposed. The type strain is SR4T (=KCTC 82075T=MCCC 1A17137T).
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