Effect of High Temperature on Abamectin and Thiamethoxam Tolerance in MEAM1 (Hemiptera: Aleyrodidae)

Overview

Journal Insects

Specialty Biology

Date 2024 Jun 26

PMID 38921114

Authors

Mi Zhou

Yuncai Liu

Yucheng Wang

Yawen Chang

Qingjun Wu

Weirong Gong

Yuzhou Du

Affiliations

Soon will be listed here.

Abstract

(Gennadius) is one of the most important invasive species in China, with strong insecticide resistance and thermotolerance. In this study, we investigated the effects of elevated temperature on the tolerance of MEMA1 to abamectin (AB) and thianethixam (TH) insecticides. We firstly cloned two new CYP450 genes from MEAM1, including one CYP6 family gene () and one CYP305 family gene (). The expression patterns of the two BtCYP450 genes were compared in response to high-temperature stress and insecticide exposure, and RNAi was then used to demonstrate the role that these two genes play in insecticide tolerance. The results showed that expression of the two BtCYP450 genes could be induced by exposure to elevated temperature or insecticide, but this gene expression could be inhibited to a certain extent when insects were exposed to the combined effects of high temperature and insecticide treatment. For AB treatment, the expression of the two BtCYP450 genes reached the lowest level when insects were exposed to a temperature of 41 °C and treated with AB (combined effects of temperature and insecticide). In contrast, TH treatment showed a general decrease in the expression of the two BtCYP450 genes with exposure to elevated temperatures. These findings suggest that insecticide tolerance in MEAM1 could be mediated by high temperatures. This study provides a prospective method for the more effective application of insecticides for the control of in the field.

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