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Chitinophaga hostae sp. nov., isolated from the rhizosphere soil of Hosta plantaginea

文献类型： 外文期刊

作者： Shan Wen He;Rong Ma;Ying Ying Zhao;Lei An;Jun Hua Huang;Qi Zhang;Ji Gang Han;Xiao Xia Zhang

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关键词： Chitinophaga;Chitinophagaceae;Hosta plantaginea

期刊名称： International Journal of Systematic and Evolutionary Microbiology

ISSN： 1466-5026

年卷期： 2022 年 72 卷 4 期

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收录情况： SCIE（2022版）

摘要： A Gram-negative, rod-shaped aerobic bacterium designated as strain 2R12T was isolated from the rhizosphere soil of Hosta plantaginea. Phylogenetic analyses based on the 16S rRNA gene revealed that strain 2R12T should be assigned to the genus Chi-tinophaga with the highest sequence similarity to Chitinophaga arvensicola DSM 3695T (99.1 %) and Chitinophaga ginsengisegetis DSM 18108T (98.6 %). The major fatty acids of strain 2R12T (>10 %) were iso-C15: 0, C16:1 ω5c and iso-C17: 0 3-OH. The major polar lipids were phosphatidylethanolamine, two unidentified aminolipids and five unidentified lipids. The predominant respiratory quinone was MK-7. The genomic DNA G+C content was 46.1 mol%. The average nucleotide identity values of strain 2R12T with C. arvensicola DSM 3695T and C. ginsengisegetis DSM 18108T were 77.9 and 78.8 %, respectively, while in silico DNA–DNA hybridi-zation values for strain 2R12T with these strains were 22.8 and 23.3 %, respectively. Based on comparative analysis of phylo-genetic, phylogenomic, phenotypic and chemotaxonomic characteristics, strain 2R12T represents a novel species in the genus Chitinophaga, for which the name Chitinophaga hostae sp. nov. is proposed. The type strain is 2R12T (=ACCC 61757T=JCM 34719T).

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