Croceivirga litoralis sp. nov., isolated from coastal surface water, and reclassification of Muricauda lutea as Croceivirga lutea comb. nov.

Author:

Zhang Jiajie12,Xu Yongle12,Chen Xiao12ORCID,Liu Daixi12,Song Hui12,Liu Jihua312,Du Zong-Jun4ORCID

Affiliation:

1. Joint Lab for Ocean Research and Education at Dalhousie University, Shandong University and Xiamen University, Qingdao 266237, PR China

2. Institute of Marine Science and Technology, Shandong University, Qingdao 266237, PR China

3. Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, PR China

4. Marine College, Shandong University, Weihai 264209, PR China

Abstract

A novel Gram-stain-negative, aerobic, yellow-pigmented bacterium was isolated from seawater of Aoshan Bay, and designated as strain ASW18T. Strain ASW18T was a long-rod-shaped bacterium without flagellum and lacked gliding ability. Based on 16S rRNA gene phylogeny, strain ASW18T showed the closest relationship to Croceivirga radicis MCCC 1A06690T, with a sequence similarity of 97.0 %. Strain ASW18T was able to grow at 25–40 °C, at pH 5.5–9.5 and with 0.5–9 % (w/v) NaCl. The genomic DNA G+C content of strain ASW18T was 37.3 %. The predominant cellular fatty acids of strain ASW18T were iso-C15 : 0, iso-C17 : 0 3-OH and iso-C15 : 1 G. The major polar lipids were phosphatidylethanolamine, phosphatidyldimethylethanolamine, an aminolipid and three unidentified lipids. The respiratory quinone of strain ASW18T was menaquinone with six isoprene units (MK-6). Based on the present polyphasic analysis, strain ASW18T represents a novel species of the genus Croceivirga , for which the name Croceivirga litoralis sp. nov. is proposed; the type strain is ASW18T (=MCCC 1K04203T=KCTC 72852T). In addition, it is also proposed that Muricauda lutea should be reclassified as Croceivirga lutea comb. nov.; the type strain is CSW06T (=CGMCC 1.15761T=JCM 31455T=KCTC 52375T=MCCC 1K03195T).

Funder

National Key Research and Development Program of China

Joint Fund of National Natural Science Foundation of China

Fundamental Research Funds of Shandong University

Publisher

Microbiology Society

Subject

General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology

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