数字农科院2.0

Cellvibrio chitinivorans sp. nov., a chitinolytic bacterium isolated from an intertidal mudflat

文献类型： 外文期刊

作者： Yanzhe Xin;Xing Qin;Honghai Zhang;Tao Dong;Xiaolu Wang;Yaru Wang;Yuan Wang;Tao Tu;Huoqing Huang;Bin Yao;Huiying Luo

作者机构：

关键词： Cellvibrio chitinivorans;chitinolytic bacterium;intertidal mudflat;new taxa

期刊名称： International Journal of Systematic and Evolutionary Microbiology

ISSN： 1466-5026

年卷期： 2025 年 75 卷 6 期

页码：

收录情况： SCIE（2025版）

摘要： A novel chitinolytic bacterium, designated as NN19T, was isolated from the intertidal mudflat in Leizhou, Guangdong Province, PR China, and subjected to polyphasic taxonomy studies. Strain NN19T is a Gram-negative short rod-shaped bacterium that is motile via a single polar flagellum. Growth occurred at temperatures of 15 °C and 37 °C (optimal 30 °C), pH 6.5–8.0 (optimal pH 7.0) and sodium chloride concentration of 0%–3% (optimal 0.5%–1%). It was identified as a Cellvibrio species based on the results of 16S rRNA gene sequence analysis, and it showed the highest degree of sequence similarity with Cellvibrio fontiphilus MVW-40T (97.87%). The main fatty acids of NN19T were found to be summed feature 3 (C16:1 ω7c/C16:1 ω6c), C16:0 and C18:1 ω7c. The polar lipid profile included diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and phospholipid. The respiratory quinone was shown to be ubiquinone-8. Strain NN19T had a genome of 4.46 Mb with a G+C content of 47.82%. The average nucleotide identity and digital DNA–DNA hybridization value between strain NN19T and C. fontiphilus MVW-40T are 75.47% and 20.4%, respectively. Based on phylogenetic analysis and phenotypic data, we concluded that strain NN19T represents a novel species belonging to the genus Cellvibrio, for which the name Cellvibrio chitinivorans sp. nov. is proposed. The type strain is NN19T (=MCCC 1K08847T=KCTC 8393T).

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