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ORIGINAL RESEARCH article

Front. Microbiol.
Sec. Extreme Microbiology
Volume 15 - 2024 | doi: 10.3389/fmicb.2024.1474645
This article is part of the Research Topic Life Under Pressure: Microbial Adaptation and Survival in High Pressure Environments View all 6 articles

Geographical distribution and driving force of microbial communities in the sediments of Diamantina and Kermadec trenches

Provisionally accepted
Yue Zhang Yue Zhang Hongmei Jing Hongmei Jing *Hao Liu Hao Liu
  • Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences (CAS), Sanya, China

The final, formatted version of the article will be published soon.

    The distinctive geological characteristics of hadal trenches are recognized to affect the construction and ecological role of microbial communities, whereas little is available on their population dynamics and assembly processes. Here, bacteria and micro-eukaryotes in the sediments of the Diamantina and Kermadec trenches were explored utilizing high-throughput sequencing. Compared with the Diamantina Trench, significant lower levels of bacterial and micro-eukaryotic biodiversity (p < 0.01), bacterial gene copy number (p < 0.05) and heterotrophic/parasitic micro-eukaryotic proportions (p < 0.05) were detected in the Kermadec Trench, which also exhibited a low community complexity based on the network analysis.Within each trench, no obvious population shifts were observed along the trench axis.Clear distance-decay distribution for mMicrobial communities was disclosed fromin both trenches showed clear distance-decay distributions, mainly driven by stochastic processes. This study provided fresh perspectives on the microbial community assembly mechanism in deep-sea trenches. Studies of, together with the community complexity and diversified trophic states of microbes would contribute to an improved understandingforthcoming exploration of their ecological functions and diversification in this extreme biosphere.

    Keywords: driving force, Biogeographical distribution, Bacteria, micro-eukaryotes, Hadal trenches

    Received: 02 Aug 2024; Accepted: 29 Oct 2024.

    Copyright: © 2024 Zhang, Jing and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Hongmei Jing, Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences (CAS), Sanya, China

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