Analogous assembly mechanisms and functional guilds govern prokaryotic communities in mangrove ecosystems of China and South America

作者：Huan Du, Jie Pan, Cui‐Jing Zhang, Xilan Yang, Cheng Wang, Xiaolan Lin, Jinhui Li, Wan Liu, Haokui Zhou, Xiaoli Yu, Shuming Mo, Guoqing Zhang, Guoping Zhao, Wu Qu, Chengjian Jiang, Yun Tian, Zhili He, Yang Liu, Meng Li · 发表于：Microbiology Spectrum · 年份：2023 · DOI：10.1128/spectrum.01577-23 · 被引用次数：11 · 研究领域：Microbial Community Ecology and Physiology、Coastal wetland ecosystem dynamics、Legume Nitrogen Fixing Symbiosis

ABSTRACT As an important coastal “blue carbon sink,” mangrove ecosystems contain microbial communities with an as-yet-unknown high species diversity. Exploring the assemblage and structure of sediment microbial communities therein can aid in a better understanding of their ecosystem functioning, such as carbon sequestration and other biogeochemical cycles in mangrove wetlands. However, compared to other biomes, the study of mangrove sediment microbiomes is limited, especially in diverse mangrove ecosystems at a large spatial scale, which may harbor microbial communities with distinct compositions and functioning. Here, we analyzed 380 sediment samples from 13 and 8 representative mangrove ecosystems, respectively, in China and South America and compared their microbial features. Although the microbial community compositions exhibited strong distinctions, the community assemblage in the two locations followed analogous patterns: the assemblages of the entire community, abundant taxa, rare taxa, and generalists were predominantly driven by stochastic processes with significant distance-decay patterns, while the assembly of specialists was more likely related to the behaviors of other organisms in or surrounding the mangrove ecosystems. In addition, co-occurrence and topological network analysis of mangrove sediment microbiomes underlined the dominance of sulfate-reducing prokaryotes in both the regions. Moreover, we found that more than 70% of the keystone and hub taxa were sul...