Stratification of Prokaryotic Communities in the White Sea Bottom Sediments

IF 1.3 4区生物学 Q4 MICROBIOLOGY

Microbiology Pub Date : 2024-02-07 DOI:10.1134/s002626172360369x

D. V. Badmadashiev, A. R. Stroeva, A. A. Klyukina, E. N. Poludetkina, E. A. Bonch-Osmolovskaya

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Abstract—

Investigation of prokaryotic communities from different horizons of the bottom sediments in the Kandalaksha Gulf, White Sea revealed two characteristic groups of sampling points. The first group demonstrated stratification of prokaryotic communities depending on the horizon depth, while the second one, with uniform prokaryotic communities, was typical of the sections with active organic matter decomposition. Microorganisms involved in decomposition of labile organic compounds (Woeseia and Sandaracinaceae), as well as sulfate reducers (SEEP-SRB1 and Sva0081) predominated in the upper horizons of the stratified sediments (the first group of samples). In the lower layers (30 and 50 cm), the share of microorganisms potentially involved in the degradation of complex compounds (e.g., Desulfatiglans, Hyphomicrobiaceae, and Mycobacterium) increased. The share of prokaryotes with unknown metabolism, such as JS1, SG8-4, WCHB1-81, Aerophobales, and S085, increased as well. Thus, the structure of prokaryotic communities was affected by the presence and abundance of organic matter, which decreased with depth.

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白海海底沉积物中原核生物群落的分层现象

摘要--对白海康达拉沙湾底层沉积物不同层位原核生物群落的调查显示，取样点有两组特征。第一组取样点的原核生物群落随地层深度而分层，第二组取样点的原核生物群落均匀一致，是有机物分解活跃地段的典型特征。在分层沉积物的上层（第一组样品），主要有参与分解易腐有机化合物的微生物（Woeseia 和 Sandaracinaceae）以及硫酸盐还原菌（SEEP-SRB1 和 Sva0081）。在下层（30 和 50 厘米），可能参与复杂化合物降解的微生物（如 Desulfatiglans、Hyphomicrobiaceae 和 Mycobacterium）所占比例增加。新陈代谢情况不明的原核生物（如 JS1、SG8-4、WCHB1-81、Aerophobales 和 S085）所占的比例也有所增加。因此，原核生物群落的结构受到有机物的存在和丰度的影响，有机物随深度的增加而减少。

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来源期刊

Microbiology 生物-微生物学

CiteScore

2.40

自引率

13.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Microbiology is an is an international peer reviewed journal that covers a wide range of problems in the areas of fundamental and applied microbiology. The journal publishes experimental and theoretical papers, reviews on modern trends in different fields of microbiological science, and short communications with descriptions of unusual observations. The journal welcomes manuscripts from all countries in the English or Russian language.