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Peer-reviewedCC BYMicroorganisms

Bacterial Diversity and Community Assembly in Deep-Sea Sediments: Observations from the Philippine Sea

  • Cheng Yang1
  • Dong Sun2
  • Yongji Huang3
  • Mingyan Lai1
  • Li Zhang4
  • Hao Yin1
  • Yanqun Li1
  • Lina Lyu1
  • Si Zhang1
4 affiliations
  1. 1State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (C.Y.);
  2. 2Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
  3. 3Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
  4. 4Guangxi Key Laboratory of Beibu Gulf Marine Resources, Environment and Sustainable Development, Fourth Institute of Oceanography, Ministry of Natural Resources, Beihai 536000, China
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Abstract

Microorganisms are important components of marine ecosystems and are widely distributed across global marine sediments. Although studies on microbial communities in deep-sea sediments have been increasing worldwide, research in the Philippine Sea is still at an early stage. In this study, we investigated the diversity and composition of bacterial communities in deep-sea sediments of the Philippine Sea and their influencing factors. The results revealed that Proteobacteria dominated the sediment bacterial communities, with clear vertical variations in community composition. Notably, bacterial communities in the shallow and deep sediments of the Parece Vela Rift showed marked differences in community composition, including variation in the abundance of taxa previously reported from hydrate- and seep-associated environments (e.g., Aerophobota), suggesting the possible influence of distinct subsurface environmental conditions. Community assembly analyses indicated that stochastic processes predominated across all four sediment cores, with deterministic processes accounting for only 12.3–21.0%, while community composition varied along measured environmental gradients, and sediment Fe showed an apparent association with phylogenetic turnover. These findings provide baseline data for understanding the mechanisms underlying the formation and maintenance of microbial diversity in deep-sea sediments and offer a reference for exploring the ecological functions of deep-sea ecosystems.

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Cite

BibTeXRIS
BibTeX
@article{yang2026bacterial,
  title = {{Bacterial Diversity and Community Assembly in Deep-Sea Sediments: Observations from the Philippine Sea}},
  author = {Cheng Yang and Dong Sun and Yongji Huang and Mingyan Lai and Li Zhang and Hao Yin and Yanqun Li and Lina Lyu and Si Zhang},
  journal = {Microorganisms},
  year = {2026},
  month = sep,
  doi = {10.3390/microorganisms14102129},
  url = {https://europepmc.org/article/PMC/PMC13707928},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Bacterial Diversity and Community Assembly in Deep-Sea Sediments: Observations from the Philippine Sea
AU  - Cheng Yang
AU  - Dong Sun
AU  - Yongji Huang
AU  - Mingyan Lai
AU  - Li Zhang
AU  - Hao Yin
AU  - Yanqun Li
AU  - Lina Lyu
AU  - Si Zhang
PY  - 2026
DA  - 2026/09/01
JO  - Microorganisms
DO  - 10.3390/microorganisms14102129
UR  - https://europepmc.org/article/PMC/PMC13707928
AB  - Microorganisms are important components of marine ecosystems and are widely distributed across global marine sediments. Although studies on microbial communities in deep-sea sediments have been increasing worldwide, research in the Philippine Sea is still at an early stage. In this study, we investigated the diversity and composition of bacterial communities in deep-sea sediments of the Philippine Sea and their influencing factors. The results revealed that Proteobacteria dominated the sediment bacterial communities, with clear vertical variations in community composition. Notably, bacterial communities in the shallow and deep sediments of the Parece Vela Rift showed marked differences in community composition, including variation in the abundance of taxa previously reported from hydrate- and seep-associated environments (e.g., Aerophobota), suggesting the possible influence of distinct subsurface environmental conditions. Community assembly analyses indicated that stochastic processes predominated across all four sediment cores, with deterministic processes accounting for only 12.3–21.0%, while community composition varied along measured environmental gradients, and sediment Fe showed an apparent association with phylogenetic turnover. These findings provide baseline data for understanding the mechanisms underlying the formation and maintenance of microbial diversity in deep-sea sediments and offer a reference for exploring the ecological functions of deep-sea ecosystems.
SN  - 2076-2607
ER  -