Mercaptoimidazole-capped gold nanoparticles as a potent agent against plant pathogenic fungi
文献类型： 外文期刊
作者： Xu, Tang 1 ; Hao, Wenshuai 3 ; Du, Ran 2 ; Dai, Dai 5 ; Wang, Cuixia 1 ; Li, Suhua 2 ; Lin, Carol Sze Ki 6 ; Cha, Ruitao 3 ; Yan, Jianbin 2 ; Li, Chong 1 ;
作者机构： 1.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Guangdong Lab Lingnan Modern Agr, Kunpeng Inst Modern Agr Foshan,Shenzhen Branch, Shenzhen, Peoples R China
2.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Minist Agr Rural Affairs, Shenzhen Branch,Guangdong Lab Lingnan Modern Agr,S, Shenzhen, Peoples R China
3.Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, Lab Theoret & Computat Nanosci, Beijing 100190, Peoples R China
4.Henan Univ, Sch Life Sci, Kaifeng 475004, Peoples R China
5.Swiss Fed Inst Technol, Dept Environm Syst Sci, CH-8092 Zurich, Switzerland
6.City Univ Hong Kong, Sch Energy & Environm, Hong Kong, Peoples R China
7.Tsinghua Univ, Biomfg Ctr, Dept Mech Engn, Beijing 100084, Peoples R China
8.Natl Inst Food & Drug Control, NMPA Key Lab Qual Res & Evaluat Pharmaceut Excipie, 2 Tiantan Xi Li, Beijing 100050, Peoples R China
期刊名称：JOURNAL OF MATERIALS CHEMISTRY B （ 影响因子：5.7； 五年影响因子：6.1 ）
ISSN： 2050-750X
年卷期： 2024 年 12 卷 42 期
页码：
收录情况： SCI
摘要： Plant pathogenic fungi pose a substantial challenge to agricultural production, but the conventional fungicide-based approaches are losing importance. As agents with broad-spectrum antibacterial effects, gold nanoparticles (Au NPs) are found to have antifungal effects; however, no study has examined their application in agriculture as fungicides. Accordingly, this study investigates the activity of 2-mercaptoimidazole-capped Au NPs (MI-Au NPs) against the 'top' plant pathogenic fungi, finding that they could inhibit Magnaporthe oryzae, Botrytis cinerea, Fusarium pseudograminearum and Colletotrichum destructivum by inducing cytoplasmic leakage. Moreover, MI-Au NPs are found to protect plants from infection by B. cinerea. Specifically, pot experiments demonstrate that MI-Au NPs decrease the incidence rate of B. cinerea infection in Arabidopsis thaliana from 74.6% to 6.2% and in Solanum lycopersicum from 100% to 10.9%, outperforming those achieved by imazalil. Furthermore, the biosafety assays reveal that MI-Au NPs cannot penetrate the cuticle of plant cells or negatively influence plant growth, and it is safe to mammalian cells. In summary, the findings of this study will support the development of NP-based antifungal agents for use in agriculture. The first evidence that MI-Au NPs prevent plants from fungal infection is presented.
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