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Climate Change Drives Changes in the Size and Composition of Fungal Communities Along the Soil-Seedling Continuum of Schima superba

文献类型： 外文期刊

作者： Wu, Xian 1 ; Mackenzie, M. Derek 2 ; Yang, Jiarong 1 ; Lan, Guoyu 3 ; Liu, Yu 1 ;

作者机构： 1.East China Normal Univ, Sch Ecol & Environm Sci, ECNU Alberta Joint Lab Biodivers Study, Tiantong Forest Ecosyst Natl Observat & Res Stn, Shanghai, Peoples R China

2.Univ Alberta, Dept Renewable Resources, Edmonton, AB, Canada

3.Chinese Acad Trop Agr Sci, Rubber Res Inst, Haikou, Hainan, Peoples R China

4.Shanghai Inst Pollut Control & Ecol Secur, Shanghai, Peoples R China

关键词： climate change; drought; plant microbiome; soil-tree seedling continuum; warming

期刊名称：MOLECULAR ECOLOGY （ 影响因子：3.9； 五年影响因子：4.8 ）

ISSN： 0962-1083

年卷期： 2025 年 34 卷 4 期

页码：

收录情况： SCI

摘要： Plant microbiomes have a major influence on forest structure and functions, as well as tree fitness and evolution. However, a comprehensive understanding of variations in fungi along the soil-plant continuum, particularly within tree seedlings, under global warming is lacking. Here, we investigated the dynamics of fungal communities across different compartments (including bulk soil and rhizosphere soil) and plant organs (including the endosphere of roots, stems and leaves) of Schima superba seedlings exposed to experimental warming and drought using AccuITS absolute quantitative sequencing. Our results revealed that warming and drought significantly reduced the number of specific fungal amplicon sequence variants (ASVs) in the bulk soil and rhizosphere soil, respectively. Variations in fungal communities were mainly explained by compartments and plant organs, with the composition of endophytic fungal communities within leaves (primarily attributed to species gain or loss) being most influenced by climate change. Moreover, warming significantly reduced the migration of Ascomycota, soil saprotrophs, wood saprotrophs and yeasts from the bulk soil to the rhizosphere soil but increased that of plant pathogens from the roots to the stems. Drought significantly decreased the absolute abundances of Chytridiomycota, Glomeromycota and Rozellomycota, as well as the migration of ectomycorrhizal fungi from the bulk soil to the rhizosphere soil but increased that of plant pathogens. Warming could indirectly reduce leaf area by increasing the diversity of leaf pathogens. These findings have potential implications for enhancing the resilience and functioning of natural forest ecosystems under climate change through the manipulation of plant microbiomes, as demonstrated in agroecosystems.

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