Frontiers in plant science · 2026
Effects of AMF on tobacco growth in continuous cropping soils: impacts on soil chemical properties and rhizosphere microbial diversity.
СтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Wang Jiangyuan, Li Junying, Fan Xingyan, Niu Xinchun, Deng Xiaopeng, Nian Fuzhao, Wang Han, Han Ningbo, Yang Shanqin, Dong Jiabin, Tang Lili, Shi Quanru, Liu Yating, Liu Di
Аннотация
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 Lysobacter, and exerted stronger effects on the fungal community than bacteria. AMF inoculation also reduced concentrations of allelopathic compounds in soil, including hydroxybenzoic acid, vanillic acid, p-coumaric acid, ferulic acid, and myristic acid. In contrast, tobacco grown in consecutively cropped soils exhibited decreased photosynthetic performance, root growth, biomass, and reduced enzyme activities, including CAT, PAL and SOD in leaves and SOD, CAT, PAL and POD in roots.
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.
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 Lysobacter, and exerted stronger effects on the fungal community than bacteria. AMF inoculation also reduced concentrations of allelopathic compounds in soil, including hydroxybenzoic acid, vanillic acid, p-coumaric acid, ferulic acid, and myristic acid. In contrast, tobacco grown in consecutively cropped soils exhibited decreased photosynthetic performance, root growth, biomass, and reduced enzyme activities, including CAT, PAL and SOD in leaves and SOD, CAT, PAL and POD in roots.
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.