Genome analysis of Tepidibacter sp. SWIR-1, an anaerobic endospore-forming bacterium isolated from a deep-sea hydrothermal vent

IF 1.3 4区生物学 Q4 GENETICS & HEREDITY Marine genomics Pub Date : 2023-10-01 DOI:10.1016/j.margen.2023.101049

Xue-Gong Li , Jie Dai , Wei-Jia Zhang , Ai-Jun Jiang , Deng-Hui Li , Long-Fei Wu

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Abstract

Tepidibacter sp. SWIR-1, a putative new species isolated from deep-sea hydrothermal vent field on the Southwest Indian Ridge (SWIR), is an anaerobic, mesophilic and endospore-forming bacterium belonging to the family Peptostreptococcaceae. In this study, we present the complete genome sequence of strain SWIR-1, consists of a single circular chromosome comprising 4,122,966 nucleotides with 29.25% G + C content and a circular plasmid comprising 38,843 nucleotides with 29.46% G + C content. In total, 3861 protein coding genes, 104 tRNA genes and 46 rRNA genes were obtained. SWIR-1 genome contains numerous genes related to sporulation and germination. Compared with the other three Tepidibacter species, SWIR-1 contained more spore germination receptor proteins. In addition, SWIR-1 contained more genes involved in chemotaxis and two-component systems than other Tepidibacter species. These results indicated that SWIR-1 has developed versatile adaptability to the Southwest Indian Ridge hydrothermal vent environment. The genome of strain SWIR-1 will be helpful for further understanding adaptive strategies used by bacteria dwelling in the deep-sea hydrothermal vent environments of different oceans.

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深海热液喷口分离的厌氧内孢子形成细菌Tepidibacter sp. SWIR-1的基因组分析

Tepidibacter sp. SWIR-1是西南印度洋脊(SWIR)深海热液喷口区分离到的一种被认为是新种的胃链球菌科(Peptostreptococcaceae)的厌氧、中温和内孢子形成细菌。在本研究中，我们展示了菌株SWIR-1的完整基因组序列，该序列由单个圆形染色体组成，包含4,122,966个核苷酸，G + C含量为29.25%，环状质粒包含38,843个核苷酸，G + C含量为29.46%。共获得3861个蛋白编码基因、104个tRNA基因和46个rRNA基因。SWIR-1基因组包含大量与产孢和萌发相关的基因。与其他三种温双杆菌相比，SWIR-1含有更多的孢子萌发受体蛋白。此外，SWIR-1比其他温双杆菌含有更多参与趋化和双组分系统的基因。这些结果表明，SWIR-1对西南印度洋脊热液喷口环境具有广泛的适应性。菌株SWIR-1的基因组将有助于进一步了解不同海洋深海热液喷口环境中细菌的适应策略。

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来源期刊

Marine genomics 生物-遗传学

CiteScore

3.60

自引率

5.30%

发文量

审稿时长

29 days

期刊介绍： The journal publishes papers on all functional and evolutionary aspects of genes, chromatin, chromosomes and (meta)genomes of marine (and freshwater) organisms. It deals with new genome-enabled insights into the broader framework of environmental science. Topics within the scope of this journal include: • Population genomics and ecology • Evolutionary and developmental genomics • Comparative genomics • Metagenomics • Environmental genomics • Systems biology More specific topics include: geographic and phylogenomic characterization of aquatic organisms, metabolic capacities and pathways of organisms and communities, biogeochemical cycles, genomics and integrative approaches applied to microbial ecology including (meta)transcriptomics and (meta)proteomics, tracking of infectious diseases, environmental stress, global climate change and ecosystem modelling.