Graphene oxide-Fe3O4 nanocomposites as high-performance antifungal agents against Plasmopara viticola
| Autor: | Qi Huixia, Wang Xiuping, Aijun Cai, Wen Xiaolei, Dapeng Jing, Hong Yuan |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
biology Graphene Sporangium Oxide food and beverages 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences 0104 chemical sciences law.invention Fungicide chemistry.chemical_compound Horticulture chemistry law Germination Plasmopara viticola Downy mildew General Materials Science 0210 nano-technology Pathogen |
| Zdroj: | Science China Materials. 60:258-268 |
| ISSN: | 2199-4501 2095-8226 |
| DOI: | 10.1007/s40843-016-9005-9 |
| Popis: | Plasmopara viticola , a causal agent of grapevine downy mildew, is a widely distributed pathogen, which can cause destructive disease in field-grown grapevines. Although fungicides are used to treat the disease, fungicide-resistant strains have been emerging. In this study, we developed graphene oxide (GO)-Fe3O4 nanocomposites, which could effectively repress the germination of sporangia and inhibit the development of downy mildew. 50 μg mL−1 GO-Fe3O4 showed excellent protective and fungicidal activities. 250 μg mL−1 GO-Fe3O4 on grapevine leaves in the field could significantly decrease the severity of downy mildew, suggesting its potent curative effect. Moreover, GO-Fe3O4 had no significant toxic effects on grapevine plants even at the concentration twice that of the highest dosage (1000 μg mL−1) used in this study. Our work suggested that GO-Fe3O4 would offer an important opportunity to develop new approach for controlling plant diseases. |
| Databáze: | OpenAIRE |
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