Document Type : Paper, English
Authors
1
PG and Research Centre in Biotechnology, MGR College, Adhiyamaan Educational Research Institution, Hosur 635 130, Tamil Nadu, India.
2
Department of Entomology, College of Agricultural Environmental Science, University of Georgia, Griffin, GA, 30223, USA.
3
Department of Zoology, Jamal Mohamed College (Autonomous), Tiruchirapalli-620 020, Tamil Nadu, India
4
Department of Biotechnology, PSG College of Arts & Science, Coimbatore – 64104, Tamil Nadu, India.
5
ADRC Lifesciences Pvt. Ltd & Ashwanth Diagnostics and Research Centre, Pl No.57, Dinamani Nagar, Madurai - 625 018, Tamil Nadu, India.
6
Department of Agriculture Science, College of Life Sciences, Chongqing University, Chongqing 400715, China
10.22117/jesi.2025.369614.1729
Abstract
Tuta absoluta is an invasive polyphagous pest recently reported on of 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.
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