1887

Abstract

In this study, we reported a novel yellow-pigmented, Gram-stain-negative bacterium with appendages, designated as strain L2, isolated from the South China Sea. Growth of strain L2 occurred at 22–40 °C (optimum, 37 °C), pH 6.0–10.0 (pH 7.0) and with 0–8 % (w/v) NaCl (2 %). Phylogenetic analysis based on its 16S rRNA gene sequence indicated that strain L2 belonged to the genus Muricauda . The close phylogenetic neighbours of strain L2 were Muricauda marina H19-56, Muricauda ruestringensis B1, Muricauda antarctica Ar-22, Muricauda taeanensis 105 and Muricauda flavescens SW-62 (96.4 %, 95.9 %, 95.9 %, 95.8 % and 94.5 % identities, respectively). The genomic DNA G+C content of strain L2 was 51.3±4.6 mol%. Theg major isoprenoid quinone was MK-6 (100.0 %). The polar lipids contained phosphatidylethanolamine and two unidentified lipids. The major fatty acids (>10 % of total fatty acids) were iso-C17 : 0 3-OH (30.3 %), iso-C15 : 1 G (20.6 %) and iso-C15 : 0 (17.6 %). Phylogenetic, physiological, biochemical and morphological analysis suggested that this strain represents a novel species of genus Muricauda , and the name Muricauda iocasae sp. nov. is proposed with the type species L2 (=CCTCC AB 2017193 =KCTC 62196).

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2018-06-22
2019-09-22
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