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Double sodium channel mutation, I265T/L1014F, is possibly related to pyrethroid‐resistant in Thrips palmi

Double sodium channel mutation, I265T/L1014F, is possibly related to pyrethroid‐resistant in... Thrips palmi Karny (Thysanoptera: Thripidae) can harm a variety of agricultural crops and transmit plant viruses, causing heavy economic losses. In the Hainan province of China, pyrethroids were sprayed widely to control T. palmi, which leaded to resistance to pyrethroids in T. palmi. The bioassay has shown that the resistance ratio of T. palmi to pyrethroids increases annually. Resistance ratio to λ‐cyhalothrin has increased from 10.711 to 23.321 and to cypermethrin has increased from 5.507 to 23.051 for 3 years, 2020−2022. The double mutation (I265T/L1014F) was identified from the field strain for the first time, which were located in the domains I and II of the voltage‐gated sodium channel of T. palmi, respectively. The double mutation is probably the reason for the higher resistance of T. palmi in Hainan. The frequencies of the double mutation were 53.33% in HN2020, 70.00% in HN2021, and 96.67% in HN2022. Results indicated that T. palmi had developed different degrees of resistance to pyrethroids in Hainan. This study provides theoretical guidance for the use of insecticides in the field control of thrips. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Insect Biochemistry and Physiology Wiley

Double sodium channel mutation, I265T/L1014F, is possibly related to pyrethroid‐resistant in Thrips palmi

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References (65)

Publisher
Wiley
Copyright
© 2023 Wiley Periodicals LLC.
ISSN
0739-4462
eISSN
1520-6327
DOI
10.1002/arch.22021
Publisher site
See Article on Publisher Site

Abstract

Thrips palmi Karny (Thysanoptera: Thripidae) can harm a variety of agricultural crops and transmit plant viruses, causing heavy economic losses. In the Hainan province of China, pyrethroids were sprayed widely to control T. palmi, which leaded to resistance to pyrethroids in T. palmi. The bioassay has shown that the resistance ratio of T. palmi to pyrethroids increases annually. Resistance ratio to λ‐cyhalothrin has increased from 10.711 to 23.321 and to cypermethrin has increased from 5.507 to 23.051 for 3 years, 2020−2022. The double mutation (I265T/L1014F) was identified from the field strain for the first time, which were located in the domains I and II of the voltage‐gated sodium channel of T. palmi, respectively. The double mutation is probably the reason for the higher resistance of T. palmi in Hainan. The frequencies of the double mutation were 53.33% in HN2020, 70.00% in HN2021, and 96.67% in HN2022. Results indicated that T. palmi had developed different degrees of resistance to pyrethroids in Hainan. This study provides theoretical guidance for the use of insecticides in the field control of thrips.

Journal

Archives of Insect Biochemistry and PhysiologyWiley

Published: Aug 1, 2023

Keywords: mutation; pyrethroid; resistance; Thrips palmi; voltage‐gated sodium channel

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