Alpine radish rhizosphere microbiome assembly and metabolic adaptation under PBAT/PLA humic acid biodegradable mulch films
文献类型： 外文期刊
作者： Zhong, Jian 1 ; Li, Ju 1 ; Liao, Jichao 1 ; Ma, Yanqin 1 ; Li, Zhi 1 ; Yang, Liang 1 ; Chang, Wei 3 ; Miao, Mingjun 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Hort Res Inst, Vegetable Germplasm Innovat & Variety Improvement, Chengdu, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Hort Crops Biol & Germplasm Enhancement, Chengdu, Peoples R China
3.Sichuan Inst Edible Fungi, Chengdu, Peoples R China
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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