Long-term continuous cropping reshapes soybean rhizosphere microbiome and metabolome to alleviate allelopathic stress and enhance disease suppression.

ABSTRACT:

Background

Continuous cropping obstacles (CCO) pose a persistent threat to global soybean sustainability, yet paradoxically attenuate under prolonged monoculture. To explore this, we investigated the soil-plant-microbiome dynamics across 1-year, short-term continuous cropping (STCC, 7-13 years), and long-term continuous cropping (LTCC, 19-25 years) systems.

Results

Our results reveal that LTCC reduces the accumulation of allelopathic autotoxin by 49.06% (P < 0.05) and enriches beneficial rhizosphere metabolites (e.g., antibiotics, monoterpenes, and glycoside compounds), driving a shift in the microbial community towards taxa with pathogen-suppressive and nutrient-cycling functions. LTCC cultivated a microbiome with enhanced genes for stress resistance and nutrient uptake. Co

SUBMITTER: Zhang X 

PROVIDER: S-EPMC12853842 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature