ArticleFrontiers in plant science2026
Effects of AMF on tobacco growth in continuous cropping soils: impacts on soil chemical properties and rhizosphere microbial diversity.
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Continuous tobacco cropping leads to reduced nutrient bioavailability, severe autotoxicity, and disrupts the rhizosphere microbial balance, ultimately reducing leaf yield and quality. Inoculation with arbuscular mycorrhizal fungi (AMF) can promote plant growth by enhancing nutrient uptake and modulating soil microbial communities. Methods: This study investigated the mechanisms underlying growth inhibition in consecutively cropped soils and evaluated the potential of AMF to alleviate such cropping stress through a pot experiment. Results: Compared with non-inoculated plants, AMF inoculation significantly improved photosynthetic parameters, agronomic traits, and biomass during the vigorous growth stage. It also increased antioxidant enzyme activities in both leaves and roots, elevated soil enzyme activities (catalase, sucrase, polyphenol oxidase), and enhanced soil nitrogen, phosphorus, and potassium content. Furthermore, AMF inoculation enriched soil microbial diversity, particularly increasing the abundance of Discussion: Overall, continuous cropping negatively affects tobacco growth and soil homeostasis, whereas AMF inoculation promotes plant growth, mitigates allelopathic stressors associated with continuous cropping, and significantly improves soil chemical properties and microbial abundance and functionality.
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