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    • The Characteristics of Fungal Responses to Uranium Mining Activities and Analysis of Their Tolerance to Uranium

    Lu Qiu,Ajia Sha, Na Li, Yanqiong Ran,Peng Xiang,Lin Zhou,Ting Zhang,Qian Wu,Liang Zou,Zhaoqiong Chen,Qiang Li,Changsong Zhao

    Ecotoxicology and Environmental Safety（2024）SCI 2区SCI 1区

    Key Laboratory of Coarse Cereal Processing | School of Public Health | Sichuan Environm Monitoring Ctr | Chengdu Med Coll

    Cited 1|Views32
    Abstract
    The influence of uranium (U) mining on the fungal diversity (FD) and communities (FC) structure was investigated in this work. Our results revealed that soil FC richness and FD indicators obviously decreased due to U, such as Chao1, observed OTUs and Shannon index (P<0.05). Moreover, the abundances of Mortierella, Gibberella, and Tetracladium were notably reduced in soil samples owing to U mining activities (P<0.05). In contrast, the abundances of Cadophora, Pseudogymnoascus, Mucor, and Sporormiella increased in all soil samples after U mining (P<0.05). Furthermore, U mining not only dramatically influenced the Plant_Pathogen guild and Saprotroph and Pathotroph modes (P<0.05), but also induced the differentiation of soil FC and the enrichment of the Animal_Pathogen-Soil_Saprotroph and Endophyte guilds and Symbiotroph and Pathotroph Saprotroph trophic modes. In addition, various fungal populations and guilds were enriched to deal with the external stresses caused by U mining in different U mining areas and soil depths (P<0.05). Finally, nine U-tolerant fungi were isolated and identified with a minimum inhibitory concentration range of 400–600 mg/L, and their adsorption efficiency for U ranged from 11.6% to 37.9%. This study provides insights into the impact of U mining on soil fungal stability and the response of fungi to U mining activities, as well as aids in the screening of fungal strains that can be used to promote remediation of U mining sites on plateaus.
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    Uranium,Environmental pollution,Bioremediation,Fungal diversity,Pollution control
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    【要点】：研究探讨了铀矿开采对土壤真菌多样性和群落结构的影响，并分析了真菌对铀的耐受性，发现了耐铀真菌。
    

    【方法】：通过比较铀矿区土壤真菌群落多样性和结构的变化，分析了铀对真菌多样性和群落结构的影响。
    

    【实验】：实验在不同铀矿区及土壤深度收集土壤样本，利用分子生物学手段分析真菌群落结构，并从土壤中分离出耐铀真菌，使用的数据集为真菌群落的高通量测序数据。结果表明，铀开采导致土壤真菌多样性和部分真菌属丰度显著下降，同时某些真菌属丰度上升，真菌群落结构发生变化，耐铀真菌的最小抑制浓度在400–600 mg/L之间，吸附效率在11.6%至37.9%之间。