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Main Authors: Xiao, Xiang, Zhao, Weishu, Song, Zewei, Qi, Qi, Wang, Bo, Zhu, Jiahui, Lin, James, Wang, Jing, Hu, Aoran, Huang, Shanshan, Wang, Yinzhao, Chen, Jianwei, Fang, Chao, Ji, Qianyue, Zhang, Nannan, Meng, Liang, Wei, Xiaofeng, Chen, Chuanxu, Cai, Shanya, Chen, Shun, Ding, Kang, Li, Dong, Liu, Shuangquan, Song, Taoran, Tian, Liyang, Zhang, Haibin, Zhang, Yu, Xu, Shiyu, Chen, Jiayu, Chen, Haixin, Cen, Qian, Jiang, Fangfang, Hu, Guohai, Tang, Chenguang, Guo, Wu, Wang, Xiaohan, Zhan, Liping, Fan, Jie, Wang, Jun, Zhou, Changhao, Li, Liuyang, Lv, Zhenbo, Hu, Yaoxun, Lin, Xiaonan, Mai, Guoqiang, Luo, Linlin, Yang, Tao, Wang, Weiwen, Kristiansen, Karsten, Chen, Liqun, Yang, Huanming, Ni, Ming, Gu, Ying, Mu, Feng, Yang, Yunfeng, Zhou, Jizhong, Wang, Jian, Zhang, Wei-Jia, Han, Mo, Xu, Xun, Liu, Shanshan
Format: Artículo científico
Language:en
Published: Cell 2025
Subjects:
Geologic Sediments
RNA, Ribosomal, 16S
Ecosystem
Oceans and Seas
Bacteria
Phylogeny
Seawater
Archaea
Metagenomics
Online Access:https://pubmed.ncbi.nlm.nih.gov/40054447/
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Table of Contents:
  • Microbial ecosystems and ecological driving forces in the deepest ocean sediments. Xiao, Xiang Zhao, Weishu Song, Zewei Qi, Qi Wang, Bo Zhu, Jiahui Lin, James Wang, Jing Hu, Aoran Huang, Shanshan Wang, Yinzhao Chen, Jianwei Fang, Chao Ji, Qianyue Zhang, Nannan Meng, Liang Wei, Xiaofeng Chen, Chuanxu Cai, Shanya Chen, Shun Ding, Kang Li, Dong Liu, Shuangquan Song, Taoran Tian, Liyang Zhang, Haibin Zhang, Yu Xu, Shiyu Chen, Jiayu Chen, Haixin Cen, Qian Jiang, Fangfang Hu, Guohai Tang, Chenguang Guo, Wu Wang, Xiaohan Zhan, Liping Fan, Jie Wang, Jun Zhou, Changhao Li, Liuyang Lv, Zhenbo Hu, Yaoxun Lin, Xiaonan Mai, Guoqiang Luo, Linlin Yang, Tao Wang, Weiwen Kristiansen, Karsten Chen, Liqun Yang, Huanming Ni, Ming Gu, Ying Mu, Feng Yang, Yunfeng Zhou, Jizhong Wang, Jian Zhang, Wei-Jia Han, Mo Xu, Xun Liu, Shanshan Geologic Sediments RNA, Ribosomal, 16S Ecosystem Oceans and Seas Bacteria Phylogeny Seawater Archaea Metagenomics Systematic exploration of the hadal zone, Earth's deepest oceanic realm, has historically faced technical limitations. Here, we collected 1,648 sediment samples at 6-11 km in the Mariana Trench, Yap Trench, and Philippine Basin for the Mariana Trench Environment and Ecology Research (MEER) project. Metagenomic and 16S rRNA gene amplicon sequencing generated the 92-Tbp MEER dataset, comprising 7,564 species (89.4% unreported), indicating high taxonomic novelty. Unlike in reported environments, neutral drift played a minimal role, while homogeneous selection (HoS, 50.5%) and dispersal limitation (DL, 43.8%) emerged as dominant ecological drivers. HoS favored streamlined genomes with key functions for hadal adaptation, e.g., aromatic compound utilization (oligotrophic adaptation) and antioxidation (high-pressure adaptation). Conversely, DL promoted versatile metabolism with larger genomes. These findings indicated that environmental factors drive the high taxonomic novelty in the hadal zone, advancing our understanding of the ecological mechanisms governing microbial ecosystems in such an extreme oceanic environment.

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