Colonization characteristics and dynamic transition of archaea communities on polyethylene and polypropylene microplastics in the sediments of mangrove ecosystems

文献类型： 外文期刊

第一作者： Wang, Qiong

作者： Wang, Qiong;Zheng, Gang;Ni, Lingfang;Li, Weiye;Zheng, Daoqiong;Wu, Jiaping;Zhang, Dongdong;Wang, Qiong;Zheng, Daoqiong;Zhang, Dongdong;Wang, Qiong;Guo, Peng;Wang, Yi;Zheng, Gang;Wang, Heng;Zhang, Dongdong

作者机构：

关键词： Mangrove sediments; Microplastics; Archaeal biomarker; Methanogens; Assembly mechanism

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：13.6； 五年影响因子：12.7 ）

ISSN： 0304-3894

年卷期： 2024 年 471 卷

页码：

收录情况： SCI

摘要： Microplastics are a growing concern in mangrove ecosystems; however, their effects on archaeal communities and related ecological processes remain unclear. We conducted in situ biofilm-enrichment experiments to investigate the ecological influence of polyethylene (PE) and polypropylene microplastics on archaeal communities in the sediments of mangrove ecosystems. The archaeal community present on microplastics was distinct from that of the surrounding sediments at an early stage but became increasingly similar over time. Bathyarchaeota, Thaumarchaeota, Euryarchaeota, and Asgardaeota were the most abundant phyla. Methanolobus, an archaeal biomarker, was enriched in PE biofilms, and significantly controlled by homogeneous selection in the plastisphere, indicating an increased potential risk of methane emission. The dominant archaeal assembly process in the sediments was deterministic (58.85%-70.47%), while that of the PE biofilm changed from stochastic to deterministic during the experiment. The network of PE plastispheres showed less complexity and competitive links, and higher modularity and stability than that of sediments. Functional prediction showed an increase in

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