文献类型： 外文期刊
作者： Rao, Wenhua 1 ; Gao, Shang 1 ; Li, Minyu 1 ; Shen, Chao 1 ; Lin, Tao 1 ; Zhang, Dingyang 2 ; Pan, Xiaohong 2 ; Lou, Binghai 3 ; Fan, Guocheng 1 ; Hu, Jinfeng 1 ;
作者机构： 1.Fujian Acad Agr Sci, Fujian Key Lab Monitoring & Integrated Management, Fuzhou Sci Observing & Expt Stn Crop Pests, Minist Agr & Rural Affairs,Fujian Engn Res Ctr Gre, Fuzhou 350013, Peoples R China
2.Fujian Agr & Forestry Univ, Coll Plant Protect, Fuzhou, Peoples R China
3.Guangxi Acad Specialty Crops, Guangxi Key Lab Germplasm Innovat & Utilizat Speci, Guilin, Peoples R China
关键词： cuprous oxide; reactive oxygen species; plant transport; systemic cure; nanopesticide; biosafety
期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：3.8； 五年影响因子：4.3 ）
ISSN： 1526-498X
年卷期： 2025 年 81 卷 7 期
页码：
收录情况： SCI
摘要： BACKGROUND: Citrus canker, a bacterial disease caused by Xanthomonas citri subsp. citri (Xcc), is one of the major threats to the citrus industry. Inorganic copper (Cu) formulations such as Bordeaux mixture and Kocide 3000 are currently used to control citrus canker; however, they are poorly water-soluble and have negligible plant transport, making the systemic treatment of citrus canker difficult. RESULTS: This study synthesized Cu2O@His by one-pot self-assembly of Cu2+ and histidine for controlling citrus canker. The results showed that Cu2O@His had a uniform size distribution (approximate to 2.7 nm) and good water solubility. It could disrupt the cell membrane of Xcc and enter into the bacterial cells to destroy the DNA, thereby inhibiting the growth (half maximal inhibitory concentration = 7.4 mu g mL(-1)) and production of virulence factors of Xcc. This was attributed to its excellent dispersibility and reactive oxygen species-inducing ability. The therapeutic efficacy and plant transport of Cu2O@His were much better than those of Kocide 3000. Additionally, it had remarkable biosafety for citrus plants and earthworms (lethal concentration 50% >> 40 mg kg(-1)). CONCLUSION: This study provides a new, eco-friendly and more efficient option for citrus canker control. (c) 2025 Society of Chemical Industry.
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