ArticlePest management science2026
Catalases act as putative oral secretion effectors in Tuta absoluta, suppressing tomato oxidative defenses and providing safe RNAi targets for pest control.
Article in Pest management science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
backgroundTuta absoluta is a globally destructive invasive Solanaceae pest with widespread resistance to conventional insecticides, highlighting the urgent need for eco-friendly and sustainable control strategies. Catalase (CAT) is a key antioxidant enzyme that primarily scavenges intracellular hydrogen peroxide (H
resultsNine CATs were identified, with TaCAT1-TaCAT3 clustered phylogenetically with known insect OS-associated CATs. These genes showed high expression in larval heads and guts, induced by tomato feeding, indicating roles at the insect-plant interface. Silencing these CATs significantly impaired larval performance: individual double-stranded RNAs (dsRNAs) caused 69% mortality, while combined targeting (dsCAT-mix) achieved 80% mortality, accompanied by reduced pupation and smaller pupae. Functionally, CAT silencing induced tomato leaves H
conclusionThese findings uncover a previously underappreciated role of CATs as putative OS effectors in a lepidopteran pest, validating them as effective, selective, and eco-friendly RNAi targets. This work provides mechanistic insight into insect-plant interactions and a practical foundation for sustainable RNAi-based strategies against Tuta absoluta. © 2026 Society of Chemical Industry.
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