Nano-Stimulated Immunity: Synthesis and Functionalization of CuS Induce Multilevel Defense Responses against Fusarium in Tomato (Solanum lycopersicum)
文献类型: 外文期刊
作者: Qin, Luyao;Deng, Chaoyi;Boyjoo, Yash;Sharma, Sudhir;Ashraf, Hina;Wang, Meng;Zhao, Lijuan;Sabliov, Cristina M.;Bhaw-Luximon, Archana;Dimkpa, Christian O.;Wang, Yi;Chen, Shibao;White, Jason C.
作者机构:
关键词: CuS nanoparticles;nanobio interaction;plantdisease;gene expression
期刊名称: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
ISSN: 0021-8561
年卷期: 2026 年
页码:
收录情况: SCIE(2025版) ; ; EI(2025版)
摘要: This study investigated how doping-modified copper sulfide (CuS) micronanoparticles (MNPs) influence tomato resistance against fungal pathogens. Three cuboidal CuS MNPs-undoped (CuS), iron-doped (Fe-CuS), and cerium-doped (Ce-CuS)-were foliarly applied to Fusarium-infected plants in a greenhouse study. Fe-CuS led to the highest Cu accumulation in leaves-15.7 and 158.4% higher than undoped CuS and Ce-CuS, respectively, likely due to its positive charge facilitating stronger electrostatic interactions and more efficient NPs uptake. Compared to the untreated control, the Fe-CuS foliar application resulted in a 487.7% increase in shoot biomass and a 36.8% reduction in wilt damage through activation of jasmonic acid/ethylene signaling, indicating a dual role of CuS MNPs as both a micronutrient carrier and an immune stimulant. Importantly, copper amine oxidases (CuAOs) activation may link Cu homeostasis to stress-induced H2O2 production, indicating a novel mechanism for nanoparticle-enabled plant immunity. These findings underscore the significant potential for CuS MNPs as an alternative to conventional copper-based fungicides, though long-term environmental behavior and life cycle impacts warrant further evaluation.
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