文献类型： 外文期刊
第一作者： Chen, Meiqi
作者： Chen, Meiqi;Ding, Ziqi;Li, Chenglei;Li, Qingfeng;Bu, Tongliang;Tang, Zizhong;Wu, Qi;Chen, Hui;Wang, Junzhen;Zhang, Kaixuan;Zhou, Meiliang
作者机构：
关键词： F. cymosum; Endophytic fungi; Drought; Metabolomics; Folate metabolism
期刊名称：ENVIRONMENTAL AND EXPERIMENTAL BOTANY （ 影响因子：4.7； 五年影响因子：5.4 ）
ISSN： 0098-8472
年卷期： 2025 年 237 卷
页码：
收录情况： SCI
摘要： Endophytic fungi can promote host plant growth and enhance resistance during the interaction with the host. The diversity of endophytic fungi inhabiting F. cymosum (a long-used medicinal plant) is unclear, and may alleviate challenges of extreme heat and drought that further its endangered status. This study employed high-throughput sequencing technology to analyze the diversity of endophytic fungi in F. cymosum across different habitats and tissue types. Through correlation analysis and in vitro assays for drought tolerance and growth promotion, three fungal strains with strong drought-resistant and growth-promoting capabilities were identified: Fusarium sp. R2, Ceratobasidium sp. R14, and Colletotrichum sp. L5. The drought tolerance and growth-promoting effects of these strains were further validated by assessing the phenotypic traits and physiological indices of F. cymosum under both soil and hydroponic cultivation conditions. Additionally, non-targeted metabolomic analysis and exogenous folic acid application experiments confirmed that folate is a key metabolite through which Fusarium sp. R2 enhances the drought tolerance of F. cymosum. In conclusion, our study demonstrates that F. cymosum from arid regions harbors a richer diversity of drought-resistant endophytic fungi, and that the Fusarium sp. R2 strain enhances drought resistance by promoting folate metabolism. This discovery reveals part of the underlying mechanisms of drought-resistant fungal strains and holds significant implications for future research on endophytic fungi to addressing agricultural drought issues.
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