Field-evolved resistance and mechanisms in Bemisia tabaci Asia I to a novel pyropene insecticide, afidopyropen, in India. (December 2022)

• Record Type: Journal Article
• Authors: Mahalanobish, Durga; Dutta, Subhramalya; Roy, Debashis; Biswas, Abhisek; Sarkar, Sukamal; Mondal, Dibyendu; Gaber, Ahmed; Hossain, Akbar; Sarkar, Pijush Kanti
• Is Part Of: Crop protection. Volume 162(2022)
• Publication Date: 2022-12
• Subjects: Whitefly -- Susceptibility -- Pyropenes -- Cross-resistance -- Synergism -- Metabolic detoxification; TRPV Transient Receptor Potential Vanilloid -- CIB&RC Central Insecticide Board & Registration Committee -- RF Resistance Factor -- SR Synergistic Ratio; Plants, Protection of -- Periodicals; 632.05
• DOI: 10.1016/j.cropro.2022.106078
• Languages: English
• ISSNs: 0261-2194

Abstract

Abstract: The cotton whitefly, Bemisia tabaci (Gennadius) is a devastating polyphagous insect pest worldwide and has been shown to be resistant to insecticides in most chemical classes. The newly commercialized pyropene insecticide afidopyropen provided a new tool to control B. tabaci because of high selectivity and its novel mode of action. This study aimed to evaluate the susceptibility of B. tabaci Asia I from ten provinces of India to afidopyropen and other commonly used insecticides. Most field-collected populations were susceptible to afidopyropen, with LC50 values varying from 4.37 to 16.62 mg L −1 . However, four field populations (W-MH, K-UP, M-WB and L-PN) exhibited moderate levels of resistance (28.53, 19.09, 35.27 and 30.81-fold, respectively), but no cross-resistance to cyantraniliprole and pymetrozine. Diethyl maleate (DEM) significantly restored the susceptibility of W-MH, M-WB and L-PN strains of B. tabaci to afidopyropen, whereas piperonyl butoxide (PBO) significantly inhibited afidopyropen resistance in K-UP, M-WB and L-PN populations. The activities of glutathione S -transferase (GST) and P450 monooxygenase increased in the afidopyropen-resistant field strains, while esterase activity did not change significantly. The present study showed a regional variation in afidopyropen toxicities among B. tabaci Asia I populations from different agro-climatic zones of India, which suggests a potential risk of afidopyropen resistance development. Metabolic detoxification mediated by GST and P450 monooxygenase was associated with afidopyropen resistance in B. tabaci Asia I. Graphical abstract: Image 1 Highlights: First report of afidopyropen resistance in Bemisia tabaci Asia I. Four field-strains exhibited moderate level of resistance. No cross-resistance of afidopyropen with cyantraniliprole or pymetrozine. Elevated GST and P450 activities in afidopyropen-resistant populations.