期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 67, 期 16, 页码 4453-4462出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.9b00806
关键词
atrazine; confocal microscopy; leaf uptake; nanoherbicide; PCL nanocapsules
资金
- Sao Paulo Research Foundation (FAPESP) Thematic Project [2017/21004-5]
- Coordination for the Improvement of Higher Education Personnel (CAPES)
- sao Paulo Research Foundation (FAPESP) [08/57906-3]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [573913/2008-0]
Atrazine is one of the most used herbicides and has been associated with persistent surface and groundwater contamination, and novel formulations derived from nanotechnology can be a potential solution. We used poly(epsilon-caprolactone) nanoencapsulation of atrazine (NC+ATZ) to develop a highly effective herbicidal formulation. Detailed structural study of interaction between the formulation and Brassica juncea plants was carried out with evaluation of the foliar uptake of nanoatrazine and structural alterations induced in the leaves. Following postemergent treatment, NC+ATZ adhered to the leaf and penetrated mesophyll tissue mainly through the hydathode regions. NC+ATZ was transported directly through the vascular tissue of the leaves and into the cells where it degraded the chloroplasts resulting in herbicidal activity. Nanocarrier systems, such as the one used in this study, have great potential for agricultural applications in terms of maintenance of herbicidal activity at low concentrations and a substantial increase in the herbicidal efficacy.
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