A Preliminary Toxicology Study on Eco-friendly Control Target of Spodoptera frugiperda
| Autor: | Wenbo Duan, Likui Wang, Wayne Jiang, Shaoying Wu, Farag Malhat, Fen Li, Zheng-Qiang Peng, Ehab Abdelraheem |
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| Rok vydání: | 2020 |
| Předmět: |
Crops
Agricultural Pesticide resistance viruses Health Toxicology and Mutagenesis 010501 environmental sciences Spodoptera Helicoverpa armigera Moths Toxicology 01 natural sciences chemistry.chemical_compound parasitic diseases Pyrethrins Ecotoxicology Animals Pesticides 0105 earth and related environmental sciences Pyrethroid biology Indoxacarb fungi 04 agricultural and veterinary sciences General Medicine Pesticide biology.organism_classification Pollution chemistry Larva 040103 agronomy & agriculture 0401 agriculture forestry and fisheries PEST analysis |
| Zdroj: | Bulletin of environmental contamination and toxicology. 106(2) |
| ISSN: | 1432-0800 |
| Popis: | Pyrethroid and indoxacarb are commonly used pesticides to control the fall armyworm (Spodoptera frugiperda) in the crops. There are a series of consequences caused by the use of pyrethroid and indoxacarb pesticides under emergency control, such as pest resistance development, contamination of soil, water, and farm products. This study analyzed the structure and physiological function of the sodium channel in S. frugiperda, which is an important step to elaborate the resistance mechanism of S. frugiperda to indoxacarb and pyrethroid pesticides. According to genetic analysis, the cloned cDNA sequences of sodium channel in S. frugiperda (SfNav) showed the shortest genetic distance with that of the sodium channel in Helicoverpa armigera. Under the induction of three pesticides, the expression of SfNav decreased in the first 12 h and then increased after 24 h. It was concluded that SfNav had a typical structure of the sodium channel of insects and its down-regulated expression can decrease the combination of S. frugiperda with pyrethroid and indoxacarb pesticides. The up-regulated expression of SfNav was conducive to the enhancement of the pesticide resistance. |
| Databáze: | OpenAIRE |
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