Related Experiment Video
Updated: May 5, 2026
08:28
Author Spotlight: Eco-Friendly Pest Management Using Entomopathogenic Fungi Against Mustard Aphids
Published on: July 21, 2023
2.7K
Effects of some leaf-emitted volatile compounds on aphid population increase
D F Hildebrand1, G C Brown, D M Jackson
1Departments of Agronomy, University of Kentucky, 40546, Lexington, Kentucky.
Journal of Chemical Ecology
|November 20, 2013
Summary
Plant-produced six-carbon volatile compounds can reduce tobacco aphid reproduction. Both C6 aldehydes and alcohols showed effectiveness, with alcohols being more potent, offering potential for aphid-resistant crops.
Area of Science:
- Plant biochemistry
- Chemical ecology
- Entomology
Background:
- Plant volatile compounds play a role in defense against arthropod pests.
- Six-carbon volatile compounds are derived from polyunsaturated fatty acids via specific enzymatic pathways.
Purpose of the Study:
- To investigate the effect of specific six-carbon volatile compounds on tobacco aphid fecundity.
- To differentiate between direct and indirect effects of these volatiles on aphids and their host plants.
Main Methods:
- Exposure of tobacco aphids to headspace vapors containing C6 aldehydes, alcohols, and acetate.
- Analysis of aphid fecundity and leaf changes after exposure.
- Comparison of effects from crushed tomato leaves versus specific volatiles.
Main Results:
- C6 aldehydes and alcohols significantly reduced tobacco aphid fecundity.
- Alcohols demonstrated greater activity than aldehydes; (Z)-3-Hexenyl acetate had no effect.
- Aldehydes exhibited both direct and indirect effects, while alcohols showed only indirect effects on aphid fecundity.
Conclusions:
- Plant-derived C6 volatile compounds, particularly alcohols and aldehydes, can reduce aphid fecundity.
- These findings suggest potential for genetic modification of plants to enhance aphid resistance through manipulation of volatile compound production.
