生物
根际细菌
光合作用
根际
镉
营养物
开枪
植物
叶绿素
微生物菌剂
园艺
接种
细菌
生态学
化学
有机化学
遗传学
作者
Leilei Zhang,Mónica Yorlady Alzate Zuluaga,Youry Pii,Angelica Barone,Stefano Amaducci,Begoña Miras-Moreno,Erika Martinelli,Gabriele Bellotti,Marco Trevisan,Edoardo Puglisi,Luigi Lucini
出处
期刊:Plant Science
[Elsevier]
日期:2023-12-01
卷期号:337: 111873-111873
被引量:2
标识
DOI:10.1016/j.plantsci.2023.111873
摘要
This study aimed to assess the effectiveness of plant growth-promoting rhizobacteria (PGPR; Pseudomonas strain So_08) and arbuscular mycorrhizal fungi (AMF; Rhizoglomus irregulare BEG72 and Funneliformis mosseae BEG234) in mitigating the detrimental effects of cadmium (Cd) and zinc (Zn) stress in tomato plants. Plant biomass, root morphology, leaf relative water content, membrane stability, photosynthetic performance, chlorophyll content, and heavy metals (HMs) accumulation were determined. Furthermore, an ionomic profile was conducted to investigate whether microbial inoculants affected the uptake and allocation of macro- and micronutrients. Metabolomics with pathway analysis of both roots and leaves was performed to unravel the mechanisms underlying the differential responses to HMs stress. The findings revealed that the levels of HMs did not significantly affect plant growth parameters; however, they affected membrane stability, photosynthetic performance, nutrient allocation, and chlorophyll content. Cadmium was mainly accumulated in roots, whilst Zn exhibited accumulation in various plant organs. Our findings demonstrate the beneficial effects of PGPR and AMF in mitigating Cd and Zn stress in tomato plants. The microbial inoculations improved physiological parameters and induced differential accumulation of macro- and micronutrients, modulating nutrient uptake balance. These results provide insights into the mechanisms underlying the plant-microbe interactions and highlight the differential modulation of the biosynthetic pathways of secondary metabolites related to oxidative stress response, membrane lipids stability, and phytohormone crosstalk.
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