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Zhouia amylolytica gen. nov., sp. nov., a novel member of the family Flavobacteriaceae isolated from sediment of the South China Sea

¹ State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Zhongguancun, Haidian, Beijing 100080, People's Republic of China
² Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China

Correspondence
Shuang-Jiang Liu
liusj{at}sun.im.ac.cn

Three Gram-negative, non-spore-forming strains were isolated from sediment from the South China Sea, China, and their taxonomic positions were investigated using a polyphasic approach. Strains HN-171^T, HN-172 and HN-181 grew optimally at 30 °C, in the presence of 4.5–5.0 NaCl % (w/v) and at pH 7.2–7.4. They contained MK-6 as the predominant respiratory quinone and contained iso-C_{15 : 1} G, iso-C_{15 : 0}, summed feature 4 (iso-C_{15 : 0} 2-OH and/or C_{16 : 1}7c/t) and C_{15 : 0} as the major fatty acids. The DNA G+C content of strain HN-171^T was 34.5 mol%. Phylogenetic analyses based on 16S rRNA gene sequences demonstrated that strain HN-171^T, together with strains HN-172 and HN-181, formed a distinct evolutionary lineage within the family Flavobacteriaceae. The 16S rRNA gene sequences of strains HN-171^T, HN-172 and HN-181 shared 99.8–100 % similarity with each other, and the sequence of strain HN-171^T exhibited similarity values below 90.2 % with those of other members of the family Flavobacteriaceae. The closest relative of HN-171^T was Coenonia anatina LMG 14382^T (90.2 %). On the basis of their phenotypic and phylogenetic properties, the three isolates represent a novel genus and a novel species, for which the name Zhouia amylolytica gen. nov., sp. nov. is proposed. The type strain is HN-171^T (=CGMCC 1.6114^T=JCM 14016^T).

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