Alpine radish rhizosphere microbiome assembly and metabolic adaptation under PBAT/PLA humic acid biodegradable mulch films

文献类型： 外文期刊

第一作者： Zhong, Jian

作者： Zhong, Jian;Li, Ju;Liao, Jichao;Ma, Yanqin;Li, Zhi;Yang, Liang;Miao, Mingjun;Zhong, Jian;Li, Ju;Liao, Jichao;Ma, Yanqin;Li, Zhi;Yang, Liang;Miao, Mingjun;Chang, Wei

作者机构：

关键词： alpine agriculture; biodegradable film; rhizosphere microbiome; metabolic adaptation; humic acid

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：4.5； 五年影响因子：5.2 ）

ISSN：

年卷期： 2025 年 16 卷

页码：

收录情况： SCI

摘要： Introduction Alpine agroecosystems present unique crop production challenges due to extreme environmental conditions, where rhizosphere microbiomes significantly influence plant adaptation.Methods To investigate mulch-induced microbial changes in high-altitude agriculture, this study analyzed a radish field in China using SMRT sequencing (16S rRNA/ITS) and metagenomics, comparing PBAT/PLA biodegradable films with/without humic acid (HA) at varying thicknesses.Results Results demonstrated that radish cultivation selectively enriched Proteobacteria and Acidobacteriota while depleting Chloroflexi and Actinobacteria, with fungal communities shifting from Basidiomycota-to Ascomycota-dominance. Notably, HA-amended mulches enhanced bacterial diversity and specifically promoted polymer-degrading microbes (Chitinophagaceae, Candidatus_Udaeobacter, Chaetomiaceae). Metagenomic profiling revealed thickness-dependent increases in functional genes related to carbohydrate and amino acid metabolism in HA-treated soils.Conclusion These findings advance our understanding of how biodegradable mulch formulations can be optimized to enhance microbial ecosystem services in alpine farming systems.

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