Microbial Community Structure in the Bottom Sediments of the Barents and Kara Seas and Their Relation to Methane Discharge

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-02-07 DOI:10.1134/s0026261723603639

A. R. Stroeva, A. D. Melnik, A. A. Klyukina, A. S. Pirogova, O. N. Vidishcheva, E. N. Poludetkina, G. G. Akhmanov, E. A. Bonch-Osmolovskaya, A. Yu. Merkel

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Abstract—

High-performance sequencing of the 16S rRNA gene (V4 region) was used to reveal the most widespread groups of microorganisms in the bottom sediments of the Barents and Kara seas. In the Barents Sea, these were uncultured bacteria of the families Hyphomicrobiaceae, Anaerolineaceae, Desulfobulbaceae, and Desulfosarcinaceae (Sva0081 sediment group), actinobacteria of the genus Rhodococcus, and proteobacteria of the genus Woeseia. In the Kara Sea the most represented groups were uncultured bacteria of the order Sedimentisphaerales (the SG8-4 cluster, class Phycisphaerae, phylum Planсtomycetota), bacteria of the family Anaerolineaceae, the family Desulfosarcinaceae (the SEEP-SRB1 cluster), the deep phylogenetic cluster NB1-j, organotrophic proteobacteria of the genera Woeseia and Pseudomonas, and sulfate reducers of the genus Desulfatiglans. The patterns of microbial distribution were analyzed depending on the depth from the bottom surface and the presence of fluid discharge zones. It was found that according to analysis of the core microbiome, uncultured bacteria of the SG8-4 cluster and uncultured bacteria of the family Anaerolineaceae predominated in the methane discharge zones in the Barents and Kara seas.

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巴伦支海和喀拉海海底沉积物中的微生物群落结构及其与甲烷排放的关系

摘要-通过对 16S rRNA 基因（V4 区域）进行高性能测序，揭示了巴伦支海和喀拉海海底沉积物中分布最广泛的微生物群。在巴伦支海，这些微生物为 Hyphomicrobiaceae、Anaerolineaceae、Desulfobulbaceae 和 Desulfosarcinaceae 科（Sva0081 沉积物组）的未培养细菌、Rhodococcus 属放线菌和 Woeseia 属蛋白细菌。在喀拉海，代表性最强的细菌群是沉积藻目（SG8-4 群、藻纲、藻目）的未培养细菌、藻红科细菌和脱硫霉素科细菌（Sva0081 沉积物群）、(SEEP-SRB1群)、NB1-j深层系统发生群、Woeseia属和假单胞菌属的有机营养蛋白细菌以及Desulfatiglans属的硫酸盐还原菌。根据距离底面的深度和流体排放区的存在情况，对微生物的分布模式进行了分析。根据对核心微生物组的分析发现，在巴伦支海和喀拉海的甲烷排放区，SG8-4 群的未培养细菌和 Anaerolineaceae 科的未培养细菌占多数。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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