Marinomonas flavescens sp. nov., isolated from seawater adjacent to Fildes Peninsula, Antarctica

International Journal of Systematic and Evolutionary Microbiology
Miaomiao HuYazhong Xiao

Abstract

A Gram-negative bacterium, namely strain ANRC-JHZ47T, was isolated from a seawater sample collected at Biological Bay, Fildes Peninsula, Antarctica. Cells of strain ANRC-JHZ47T were rod-shaped and motile by a single polar flagellum. Strain ANRC-JHZ47T was aerobic, oxidase-negative, and catalase-positive. The strain grew at 4-37 °C (optimum, 25 °C), pH at 3.5-10.0 (optimum, pH 5.5) and in NaCl at 1-7.0 % (w/v; optimum, 2-3 %). Strain ANRC-JHZ47T used Q-8 as the predominant respiratory quinone. Its predominant fatty acids were C16 : 0 (21.9 %), C12 : 0 (12.6 %), C19 : 0cyclo ω8c (12.4 %), summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c; 13.1 %), C10 : 0 3-OH (11.3 %) and summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c; 6.0 %). Its major polar lipids were phosphatidylglycerol, phosphatidylethanolamine, diphosphatidylglycerol, one unidentified aminolipid and five unknown polar lipids. The DNA G+C content was 42.6 mol%. Strain ANRC-JHZ47T showed the highest 16S rRNA gene sequence similarity to Marinomonas arenicola KMM 3893T (97.9 %), followed by Marinomonas primoryensis KMM 3633T (97.6 %), Marinomonas profundimaris D104T (97.2 %) and Marinomonas pollencensis IVIA-Po-185T (97.0 %). Furthermore, the average nucleotide identity values b...Continue Reading

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Citations

Mar 5, 2021·International Journal of Systematic and Evolutionary Microbiology·Xiao-Meng SunXi-Ying Zhang

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