Study on Heme Peroxidase Genes in Neonicotinoid-Resistant Aphids
Author Information
Author(s): Rao Wenhua, Chen Feng, Zhou Xianzhi, Wang Jun, Lin Lei, Fan Guocheng, Hu Jinfeng, Serrão José Eduardo
Primary Institution: Fujian Engineering Research Center for Green Pest Management, Fujian Academy of Agricultural Sciences, Fuzhou, China
Hypothesis
Do antioxidant enzymes contribute to the immune response of neonicotinoid-resistant pests against insecticides?
Conclusion
The study found that the heme peroxidase genes MpPxd2 and MpPxd4 are crucial for the oxidative stress response in neonicotinoid-resistant Myzus persicae.
Supporting Evidence
- Thiacloprid exposure significantly increased reactive oxygen species in resistant aphids.
- MpPxd2 and MpPxd4 were significantly upregulated in thiacloprid-treated aphids.
- Knockdown of MpPxd2 or MpPxd4 increased susceptibility to neonicotinoids.
- Peroxidase activity was significantly higher in resistant aphids compared to susceptible ones.
- Oxidative stress was induced by neonicotinoid exposure in the resistant aphid population.
Takeaway
This research shows that certain genes help resistant aphids survive pesticides by fighting off damage from harmful substances.
Methodology
The study involved treating aphids with thiacloprid and measuring the expression of heme peroxidase genes and their effects on oxidative stress.
Limitations
The study did not explore all potential pathways related to neonicotinoid resistance.
Participant Demographics
Field population of Myzus persicae collected from cabbage fields in Fuzhou, China.
Statistical Information
P-Value
0.0001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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