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- Title
Continuous cropping system altered soil microbial communities and nutrient cycles.
- Authors
Mengjiao Ding; Huaxin Dai; Yi He; Taibo Liang; Zhen Zhai; Shixiang Zhang; Binbin Hu; Heqing Cai; Bin Dai; Yadong Xu; Yanling Zhang
- Abstract
Understanding the response of microbial communities and their potential functions is essential for sustainability of agroecosystems under long-term continuous cropping. However, limited research has focused on investigating the interaction between soil physicochemical factors and microbial community dynamics in agroecosystems under long-term continuous cropping. This study probed into the physicochemical properties, metabolites, and microbial diversity of tobacco rhizosphere soils cropped continuously for 0, 5, and 20 years. The relative abundance of bacterial genera associated with nutrient cycling (e.g., Sphingomonas) increased while potential plant pathogenic fungi and beneficial microorganisms showed synergistic increases with the duration of continuous cropping. Variations in soil pH, alkeline nitrogen (AN) content, and soil organic carbon (SOC) content drove the shifts in soil microbial composition. Metabolites such as palmitic acid, 3-hydroxypropionic acid, stearic acid, and hippuric acid may play a key role in soil acidification. Those results enhance our ability to predict shifts in soil microbial community structure associated with anthropogenic continuous cropping, which can have long-term implications for crop production.
- Subjects
CROPPING systems; MICROBIAL communities; SOIL acidification; HIPPURIC acid; PHYTOPATHOGENIC fungi; SOIL microbial ecology; NUTRIENT cycles
- Publication
Frontiers in Microbiology, 2024, p01
- ISSN
1664-302X
- Publication type
Article
- DOI
10.3389/fmicb.2024.1374550