Open AccessMaribellus luteus gen. nov., sp. nov., a marine bacterium in the family Prolixibacteraceae isolated from coastal seawater
Author(s) -
Lichun Zhou,
Zi-Liang Yu,
Wei Xu,
Da-Shuai Mu,
ZongJun Du
Publication year - 2019
Publication title -
international journal of systematic and evolutionary microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 173
eISSN - 1466-5034
pISSN - 1466-5026
DOI - 10.1099/ijsem.0.003495
Subject(s) - biology , 16s ribosomal rna , strain (injury) , genomic dna , bacteria , microbiology and biotechnology , oxidase test , pigment , genus , botany , gene , biochemistry , genetics , enzyme , anatomy , chemistry , organic chemistry
A facultatively anaerobic, Gram-stain-negative, non-motile and straight to slightly curved long rod-shaped bacterial strain, designated XSD2 T , was isolated from coastal seawater of Xiaoshi Island, PR China. The cells were catalase-positive, oxidase-negative and non-flagellated. Strain XSD2 T was found to grow at 20-40 °C (optimum, 33 °C), at pH 6.0-8.5 (pH 7.0-7.5) and with 1-5 % (w/v) NaCl (3 %). Carotenoid pigments were produced. The major cellular fatty acids (>10.0 %) were iso-C15 : 0, iso-C16 : 0 3-OH and C17 : 1ω6c and the major polar lipids were phosphatidylethanolamine, one unidentified aminolipid and three unidentified polar lipids. The sole respiratory quinone was MK-7 and the genomic DNA G+C content was 44.1 mol%. The result of the 16S rRNA gene sequence analysis confirmed the affiliation of this organism to the order Marinilabiliales, family Prolixibacteraceae, with Mariniphaga sediminis SY21 T as its closest relative with only 93.6 % sequence similarity. On the basis of physiological, biochemical and chemotaxonomic characteristics, we propose that strain XSD2 T (=KCTC 62994 T =MCCC 1H00347 T ) represents a novel species of a novel genus in the family Prolixibacteraceae, for which the name Maribellus luteus gen. nov., sp. nov. is proposed.