Age-Related Conservation in Plant-Soil Feedback Accompanied by Ectomycorrhizal Domination in Temperate Forests in Northeast China

文献类型： 外文期刊

第一作者： Bai, Zhen

作者： Bai, Zhen;Ye, Ji;Mao, Zi-Kun;Fang, Shuai;Long, Shao-Fen;Wang, Xu-Gao;Liu, Shu-Fang;Sun, Hai-Hong;Yuan, Zuo-Qiang;Long, Shao-Fen

作者机构：

关键词： ectomycorrhizal (EcM) fungi; forest aging; soil nutrient dynamics; plant traits; temperate forest ecology; mycorrhizal exploration type

期刊名称：JOURNAL OF FUNGI （ 影响因子：4.7； 五年影响因子：5.2 ）

ISSN：

年卷期： 2024 年 10 卷 5 期

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收录情况： SCI

摘要： This study investigates the effects of forest aging on ectomycorrhizal (EcM) fungal community and foraging behavior and their interactions with plant-soil attributes. We explored EcM fungal communities and hyphal exploration types via rDNA sequencing and investigated their associations with plant-soil traits by comparing younger (similar to 120 years) and older (similar to 250 years) temperate forest stands in Northeast China. The results revealed increases in the EcM fungal richness and abundance with forest aging, paralleled by plant-soil feedback shifting from explorative to conservative nutrient use strategies. In the younger stands, Tomentella species were prevalent and showed positive correlations with nutrient availability in both the soil and leaves, alongside rapid increases in woody productivity. However, the older stands were marked by the dominance of the genera Inocybe, Hymenogaster, and Otidea which were significantly and positively correlated with soil nutrient contents and plant structural attributes such as the community-weighted mean height and standing biomass. Notably, the ratios of longer-to-shorter distance EcM fungal exploration types tended to decrease along with forest aging. Our findings underscore the integral role of EcM fungi in the aging processes of temperate forests, highlighting the EcM symbiont-mediated mechanisms adapting to nutrient scarcity and promoting sustainability in plant-soil consortia.

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