Abstract
A Gram-stain-negative, strictly aerobic, non-flagellated, non-gliding, oxidase- and catalase-positive, white-pigmented and rod-shaped bacterium, designated strain XH122T, was isolated from a surface seawater sample collected from the South Pacific Gyre (45° 58' E 163° 11' S) during Integrated Ocean Drilling Program Expedition 329.Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain XH122T belonged to the genus Leucothrix and showed highest 16S rRNA gene sequence similarity to Leucothrix mucor DSM 2157T (94.3%). It showed lower sequence similarities ( < 90.7%) with all other representatives of the class Gammaproteobacteria. Optimal growth occurred in the presence of 2% (w/v) NaCl, at pH 8.0 and at 28 °C. The DNA G+C content of strain XH122T was 46.2 mol%. The major fatty acids were C16 : 0, C16 : 1ω9c and C18 : 1ω9c. The major respiratory quinone was ubiquinone-8 (Q-8). The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. On the basis of data from this polyphasic study, strain XH122T is considered to represent a novel species of the genus Leucothrix, for which the name Leucothrix pacifica sp. nov. is proposed. The type strain is XH122T ( = DSM 25984T = JCM 18388T).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International journal of systematic and evolutionary microbiology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
