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  • Title: Pseudorhodobacter aquimaris sp. nov., isolated from seawater, and emended description of the genus Pseudorhodobacter Uchino et al. 2002.
    Author: Jung YT, Oh KH, Oh TK, Yoon JH.
    Journal: Int J Syst Evol Microbiol; 2012 Jan; 62(Pt 1):100-105. PubMed ID: 21335494.
    Abstract:
    A Gram-stain-negative, aerobic, motile, ovoid bacterial strain, designated HDW-19(T), was isolated from seawater of the west coast of Korea and subjected to a polyphasic taxonomic study. Strain HDW-19(T) grew optimally at pH 7.0-8.0, at 30 °C and in the presence of 2-3% (w/v) NaCl. Bacteriochlorophyll a was not produced by strain HDW-19(T). Neighbour-joining, maximum-likelihood and maximum-parsimony phylogenetic trees based on 16S rRNA gene sequences showed that strain HDW-19(T) clustered with Pseudorhodobacter ferrugineus IAM 12616(T), with which it shared 96.4% similarity. A neighbour-joining phylogenetic tree based on gyrB gene sequences showed that strain HDW-19(T) also clustered with the type strain of P. ferrugineus, sharing 83.0% similarity. Strain HDW-19(T) contained Q-10 as the predominant ubiquinone and C(18:1)ω7c as the major fatty acid. The major polar lipids were phosphatidylcholine, phosphatidylglycerol, three unidentified aminophospholipids and two unidentified aminolipids. The DNA G+C content of strain HDW-19(T) was 60.9 mol%. Differential phenotypic properties, together with phylogenetic distinctiveness, showed that strain HDW-19(T) can be differentiated from P. ferrugineus. On this basis, strain HDW-19(T) is considered to represent a novel species of the genus Pseudorhodobacter, for which the name Pseudorhodobacter aquimaris sp. nov. is proposed. The type strain is HDW-19(T) (=KCTC 23043(T) =CCUG 58879(T)).
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