Erythrobacter aurantius sp. nov., isolated from intertidal seawater in Taizhou
Yu Zhang, Jia Hua, Junjie Ying, Han Dong, Hao Li, Maripat Xamxidin, Bingnan Han, Cong Sun, Lin Xu
Abstract
A Gram-stain-negative, aerobic, chemoheterotrophic and rod-shaped strain, designated as C5 T , was isolated from intertidal surface seawater in Taizhou, Zhejiang Province, PR China and characterized using a polyphasic taxonomic approach. Strain C5 T could produce carotenoids and bacteriochlorophyll a . Growth was observed at 20–45 °C, at pH 6.0–9.0 and with 0–8.0 % (w/v) NaCl. The 16S rRNA gene sequence identity analysis revealed that strain C5 T was the most closely related to Qipengyuania nanhaisediminis CGMCC 1.7715 T (98.8%) and Erythrobacter litoralis DSM 8509 T (98.7%). The phylogenetic reconstruction based on core genes demonstrated that strain C5 T was clustered into the members of the genus Erythrobacter . The average nucleotide identity and digital DNA–DNA hybridization values between strain C5 T and Erythrobacter type strains were lower than 76 and 25 %, respectively. The predominant and minor respiratory quinones were identified as ubiquinone-10 and ubiquinone-9. The major fatty acids were summed feature 8 (C 18 : 1 ω 7 c and/or C 18 : 1 ω 6 c ) and iso-C 18 : 0 . Polar lipids included phosphatidylethanolamine, phosphatidylglycerol, a glycosphingolipid and an unidentified aminolipid. Based on the genetic, chemotaxonomic and phenotypic data, strain C5 T is concluded to represent a novel species in the genus Erythrobacter , for which the name Erythrobacter aurantius sp. nov. is proposed. The type strain is C5 T (=MCCC 1K05108 T =KCTC 92307 T ).