Xu Daolong, Yu Xiaowen, Zhang Yusen, Liu Yaru, Chen Chunmei, Li Li, Fan Shuming, Lu Xingrong, Zhang Xiujuan
Inner Mongolia Academy of Science and Technology, Hohhot 010020, China.
Inner Mongolia Autonomous Region Environmental Monitoring Station, Hohhot 010020, China.
Curr Res Microb Sci. 2025 May 20;9:100405. doi: 10.1016/j.crmicr.2025.100405. eCollection 2025.
Agricultural productivity is significantly impeded by salinization, which also adversely affects the environment. The use of compost as a soil conditioner has been shown to effectively ameliorate saline-alkali soils. Nonetheless, there is a paucity of research investigating the effects of compost on microbial populations within these soils. This study utilized high-throughput sequencing technology to specifically investigate the impact of compost addition on fungal diversity and the composting process in saline-alkali soils. The aim was to elucidate the effects of compost incorporation on the composition, structure, and functional group characteristics of fungal communities in such soils. The findings indicate that fungal diversity varied across different fermentation stages, with the predominant functional microbiota differing at each stage. Ascomycota, Mortierellomycota, and Basidiomycota were identified as the dominant fungal taxa in the soil. FUNGuild analysis predicted that the functional capacity of the rhizosphere soil fungal community was significantly enhanced by saprotrophic fungi in saline-alkali soil, resulting in improved soil quality. The Redundancy Analysis indicated that the main environmental factors affecting the fungal community were soil pH, organic matter, and soil enzymes. The findings from this research could offer a theoretical foundation for enhancing saline-alkali soils with microbial biofertilizers and boosting agricultural productivity.
盐渍化严重阻碍了农业生产力，同时也对环境产生不利影响。堆肥作为一种土壤改良剂，已被证明能有效改良盐碱地。然而，关于堆肥对这些土壤中微生物种群影响的研究却很少。本研究利用高通量测序技术，专门研究了添加堆肥对盐碱地真菌多样性和堆肥过程的影响。目的是阐明添加堆肥对这类土壤中真菌群落的组成、结构和功能群特征的影响。研究结果表明，真菌多样性在不同发酵阶段有所不同，每个阶段的主要功能微生物群也不同。子囊菌门、被孢霉门和担子菌门被确定为土壤中的优势真菌类群。FUNGuild分析预测，盐碱地中腐生真菌显著增强了根际土壤真菌群落的功能能力，从而改善了土壤质量。冗余分析表明，影响真菌群落的主要环境因素是土壤pH值、有机质和土壤酶。本研究结果可为利用微生物生物肥料改良盐碱地和提高农业生产力提供理论依据。
