古细菌是地球生命的重要组成部分。它们被认为在红树林的养分生物地球化学循环中起着重要作用。然而,只有少数关于红树林古细菌群落的研究报告。特别是,迄今为止,尚未研究影响红树林古细菌群落的组装过程和相互作用模式。这里,生物地理学,装配模式,系统地分析了中国东南部七个具有代表性的红树林古菌群落的驱动因素。分析表明,与地下沉积物相比,表层沉积物中的古细菌群落更加多样化,低纬度的红树林比高纬度的红树林更加多样化,Woesearchaeota和Bathyarchaeota是最多样化和最丰富的门,分别。Beta最近分类单元指数分析表明,在所有红树林和每个红树林中,同质选择对整个古细菌群落具有决定性作用。此外,条件稀有分类群群落受到同质选择的强烈塑造,而随机过程塑造了占主导地位的分类单元和始终罕见的分类单元社区。Further,注意到环境选择对古细菌群落的适度影响,对永远罕见的分类群影响最小。红树林位置,年平均气温,盐度是影响群落组成的主要因素。最后,网络分析揭示了考古群落中的全面共生关系,与Bathyarchoota的关键作用。这项研究扩大了对生物地理学的理解,装配模式,驱动因素,和红树林古细菌群落的共生关系,并激发了对红树林沉积物古细菌资源的功能探索。重要性作为具有重要生态作用的关键微生物群落组成部分,古细菌值得生物学家和生态学家的关注。控制微生物群落多样性的机制,composition,生物地理学是微生物生态学的核心,但知之甚少。红树林位于陆地-海洋界面,是研究上述问题的理想环境。我们在这里首次概述了位于中国东南部9,000多公里海岸线上的红树林中的古细菌群落结构和生物地理学。我们观察到低纬度红树林的古细菌多样性高于高纬度红树林。此外,我们的数据表明,同质选择强烈控制了红树林沉积物中整体和有条件稀有分类群群落的组装,而占主导地位的分类单元和始终稀有的分类单元群落主要受扩散限制控制。
Archaea are a major part of Earth\'s life. They are believed to play important roles in nutrient biogeochemical cycling in the mangrove. However, only a few studies on the archaeal community in mangroves have been reported. In particular, the assembly processes and interaction patterns that impact the archaeal communities in mangroves have not been investigated to date. Here, the biogeography, assembly patterns, and driving factors of archaeal communities in seven representative mangroves across southeastern China were systematically analyzed. The analysis revealed that the archaeal community is more diverse in surface sediments than in subsurface sediments, and more diverse in mangroves at low latitudes than at high latitudes, with Woesearchaeota and Bathyarchaeota as the most diverse and most abundant phyla, respectively. Beta nearest-taxon index analysis suggested a determinant role of homogeneous selection on the overall archaeon community in all mangroves and in each individual mangrove. In addition, the conditionally rare taxon community was strongly shaped by homogeneous selection, while stochastic processes shaped the dominant taxon and always-rare taxon communities. Further, a moderate effect of environmental selection on the archaeal community was noted, with the smallest effect on the always-rare taxon community. Mangrove location, mean annual temperature, and salinity were the major factors that greatly affected the community composition. Finally, network analysis revealed comprehensive cooccurrence relationships in the archaeal community, with a crucial role of Bathyarchaeota. This study expands the understanding of the biogeography, assembly patterns, driving factors, and cooccurrence relationships of the mangrove archaeal community and inspires functional exploration of archaeal resources in mangrove sediments. IMPORTANCE As a key microbial community component with important ecological roles, archaea merit the attention of biologists and ecologists. The mechanisms controlling microbial community diversity, composition, and biogeography are central to microbial ecology but poorly understood. Mangroves are located at the land-ocean interface and are an ideal environment for examining the above questions. We here provided the first-ever overview of archaeal community structure and biogeography in mangroves located along an over-9,000-km coastline of southeastern China. We observed that archaeal diversity in low-latitude mangroves was higher than that in high-latitude mangroves. Furthermore, our data indicated that homogeneous selection strongly controlled the assembly of the overall and conditionally rare taxon communities in mangrove sediments, while the dominant taxon and always-rare taxon communities were mainly controlled by dispersal limitation.