Dahongpao mother tree affects soil microbial community and nutrient cycling by increasing rhizosphere soil characteristic metabolite content

作者：Weiting Cheng, Shuqi Zhang, Yuhua Wang, Hong Lei, Miaoen Qiu, Yulin Wang, Yangxin Luo, Qi Zhang, Tingting Wang, Xiaoli Jia, Haibin Wang, Jianghua Ye · 发表于：Frontiers in Plant Science · 年份：2025 · DOI：10.3389/fpls.2025.1508622 · 被引用次数：4 · 研究领域：Soil Carbon and Nitrogen Dynamics、Agriculture, Soil, Plant Science、Plant Ecology and Soil Science

). In this study, Dahongpao mother tree (MD) and cutting Dahongpao (PD) were used as research objects and their rhizosphere soil were collected and performed metabolomics analysis. At the same time, soil nutrient content, microbial physiological indexes, and microbial carbon source utilization were determined, which in turn obtained the effect of cuttings on metabolites, microorganisms, and nutrient cycling in rhizosphere soil of tea trees. The results showed that available nitrogen, available phosphorus and available potassium in the rhizosphere soil of MD were significantly higher (p < 0.05) than in PD. Secondly, microbial biomass carbon, microbial biomass nitrogen, microbial respiration, bacterial number, fungal number, and actinomycete number were also significantly higher in rhizosphere soil of MD than in PD. There were six groups of rhizosphere soil characteristic metabolites that differentiated MD from PD, of which the content of acid, amine, phenol, heterocyclic compound, alcohol and lipid was significantly higher in MD compared to PD, while carbohydrate content was significantly less in MD. There were five groups of rhizosphere soil microorganisms that differentiated MD from PD, in which microorganisms with carboxylic acid, amines, fatty acid and phenolic acid as carbon sources were significantly larger in MD than in PD, whereas microorganisms with carbohydrates as carbon sources were significantly smaller in MD than in PD. It can be seen that the number and content ...