文献类型：期刊文献

英文题名：Eutrophication influences diversity and community-level change points of mycoplankton in subtropical estuaries

作者：Zhong, Jiehao[1];Chen, Qingxiang[1];Deng, Xiaojie[1];Guan, Yongpeng[1];He, Qing[1];Nethmini, Rajapakshalage Thashikala[1];Tang, Jing[1];Hou, Qinghua[1];Li, Xiaolei[1];Jiang, Gonglingxia[1];Huang, Laizhen[1];Dong, Ke[2];Li, Nan[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Dept Educ Guangdong Prov,Key Lab Coastal Ocean Var, Dept Oceanog,Key Lab Climate Resources & Environm, Zhanjiang, Peoples R China;[2]Kyonggi Univ, Dept Biol Sci, Suwon, South Korea

年份：2025

卷号：16

外文期刊名：FRONTIERS IN MICROBIOLOGY

收录：SCI-EXPANDED(收录号：WOS:001526863700001)、、Scopus(收录号：2-s2.0-105010937142)、WOS

基金：The author(s) declare that financial support was received for the research and/or publication of this article. This work was funded by the Guangdong Ocean University Innovative Team (Early-warning of marine disasters) (Grant number 2023KCXTD015); Guangxi Key Research and Development Program (Grant number AB24010109), the Scientific Research Start Funds of Guang Dong Ocean University; the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (RS-2022-NR073058).

语种：英文

外文关键词：mycoplankton; community-level change points; TITAN; subtropical estuary; 18S rRNA gene

外文摘要：Mycoplankton are essential for biogeochemical cycles in natural water bodies. However, the distribution of the mycoplanktonic community and its community-level change points in subtropical estuaries remain unclear. In this study, we employed 18S rRNA high-throughput sequencing to explore the mycoplanktonic community structure and environmental thresholds in the Dafengjiang River Estuary. Agaricostilbomycetes and Saccharomycetes are the dominant classes in the Dafengjiang River Estuary. The alpha and beta diversities of the mycoplanktonic communities showed significant differences (p < 0.05) across the seasons. Distance-based redundancy analysis (db-RDA) suggested that the main driver of the total community was eutrophication level, and the key factors for oligotrophication, medium eutrophication, and high eutrophication were dissolved inorganic phosphorus (DIP), ammonium (NH4+), and chlorophyll-a (Chl-a), respectively. Threshold Indicator Taxa Analysis (TITAN) exhibited the community-level change points of mycoplankton along the eutrophication gradients were DIP (6-15.5 mu g/L), NH4+ (61.5-62.5 mu g/L) and Chl-a (2.55-9.3 mu g/L), respectively. Random forest analysis revealed that Rhizophydium, Aspergillus and Vanrija were sensitive to eutrophication status and could serve as bioindicator genera for environmental changes. Overall, our study enhances our understanding of the diversity and community-level change points of mycoplankton in subtropical estuaries and lays the theoretical foundation for the environmental monitoring of subtropical estuaries.