Jeyaraj Senthil Kumar (2025) Chlorantraniliprole selection, synergism and cross-resistance to various insecticides in tomato pinworm, Tuta absoluta (Meyrick). Chlorantraniliprole selection, synergism and cross-resistance to various insecticides in tomato pinworm, Tuta absoluta (Meyrick), 45 (4). pp. 499-513. ISSN 2783-3968

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Abstract

Tuta absoluta is an invasive polyphagous pest recently reported on
tomato, brinjal, and potato in India. It has acquired resistance to many chemical
insecticides under field control. A toxicity test demonstrated a 31.7-fold reduction
in mortality with high resistance to chlorantraniliprole selection in laboratory
circumstances. The cross-resistance profile to various pesticides revealed moderate
to high resistance to flubendiamide (2.3-fold) succeeded by spinosad, chlorpyrifos,
cypermethrin, imidacloprid, and esfenvalerate (RR=6.0, 3.3, 3.1 and 2.8-fold). No
resistance was detected to emamectin and abamectin (RR= 0.9-fold). The
synergism bioassay utilizing PBO (piperonyl butoxide), DEM (diethyl-maleate)
and TPP (triphenyl phosphate) revealed the potential mechanisms of esterase and
P450 metabolic resistance to chlorantraniliprole in T. absoluta. Furthermore, six
cytochrome P450 genes (CYP321A7, CYP321A9, CYP6B6, CYP6B47,
CYP4M21 and CYP4C71) exhibited higher expressed level in the TN-R G7
resistant population compared to the susceptible one (SS). This work may facilitate
the effective treatment of T. absoluta resistance to chlorantraniliprole through
rotation with emamectin and abamectin

Item Type: Article
Uncontrolled Keywords: : Chlorantraniliprole, Insecticide Synergist, Metabolic enzymes, Cross-resistance, Resistance management
Divisions: PSG College of Arts and Science > Department of Biotechnology
Depositing User: Dr. B Sivakumar
Date Deposited: 10 Apr 2026 05:55
Last Modified: 10 Apr 2026 05:55
URI: https://ir.psgcas.ac.in/id/eprint/2786

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