Abstract
BackgroundFlavonoids, a class of plant phenolic compounds, act as plant defense chemicals. Chrysoeriol is a naturally occurring flavonoid produced by Melientha suavis Pierre. The goal of this study was to investigate the insecticidal potential and mode of action of chrysoeriol isolated from M. suavis against Spodoptera litura (Fabricius).ResultsThe effects of chrysoeriol on second-instar S. litura larvae were determined by topical application. Chrysoeriol was highly toxic to S. litura (24- and 48-h LD50 values of ~ 6.99 and 6.51 µg/larva, respectively). Moreover, mode-of-action experiments demonstrated that this compound significantly decreased the activities of both detoxification-related enzymes [carboxylesterases (CarE) and glutathione S-transferase (GST)] and neurological enzymes (acetylcholinesterase).ConclusionsThese results indicate that chrysoeriol isolated from M. suavis could be used as a potential agent with activity against S. litura. However, it is necessary to determine the potential side effects on nontarget species for the further development of these novel insecticides.Graphical
Highlights
Flavonoids, a class of plant phenolic compounds, act as plant defense chemicals
The acute toxicity of chrysoeriol, M. suavis crude extract and cypermethrin to S. litura larvae was determined by topical application
Acute toxicity and mode‐of‐action of chrysoeriol on S. litura larvae A major constituent, chrysoeriol, was isolated from M. suavis, and its bioinsecticidal activity was demonstrated in an agricultural insect pest, S. litura
Summary
Chrysoeriol is a naturally occurring flavonoid produced by Melientha suavis Pierre. The goal of this study was to investigate the insecticidal potential and mode of action of chrysoeriol isolated from M. suavis against Spodoptera litura (Fabricius). Intensive application of these compounds has negative impacts on nontarget organisms, contaminates the environment, and leads to insecticides resistance in pests [4, 5]. Such problems have led to a demand to identify new and safer active compounds of natural origin that are alternatives to existing synthetic insecticides [6]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Chemical and Biological Technologies in Agriculture
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
