The succession of rhizosphere microbial community in the continuous cropping soil of tobacco

作者：Guitong Li, Pengfei Gong, Jie Zhou, Lin Wang, Xin Song, Penghui Ding, Yunfeng Jin, Yuzhen Zhang, Xiaoqian Zhou, Jianming Yang, Zhaobao Wang, Yun Long, Jie Ren · 发表于：Frontiers in Environmental Science · 年份：2024 · DOI：10.3389/fenvs.2023.1251938 · 被引用次数：23 · 研究领域：Microbial Community Ecology and Physiology、Soil Carbon and Nitrogen Dynamics、Plant-Microbe Interactions and Immunity

Introduction: Flue-cured tobacco is an important economic crop that is not tolerant of continuous cropping and can be influenced by planting soil conditions including rhizosphere microbial communities and soil physicochemical properties. The relationship between rhizosphere microbial communities and soil physicochemical properties under continuous cropping conditions is unclear. Methods: This study investigated the succession of rhizosphere microbial community in continuous tobacco cropping soil for 1, 3, 5, 8, 10, 15, and 30 years. The physicochemical properties of the soil were measured, high-throughput sequencing was performed on the rhizosphere microbial community, and correlation analysis was conducted. Results: The results suggested that continuous cropping could significantly enrich soil available nitrogen, available phosphorus, available potassium, and organic matter. Meanwhile, the alpha diversity of the bacterial community was significantly reduced with continuous cropping, indicating significant changes in the structure of bacterial and fungal communities. Based on linear discriminant analysis effect size (LEfSe), 173 bacterial and 75 fungal genera were identified with significant differences. The bacterial genera, Sphingomonas , Streptomyces , and Microvirga , were significantly positively correlated with continuous cropping years. The fungal genera, Tausonia , Solicocozyma , Pseudomycohila , and Fusarium , also showed significant positive correlation with continu...