Agricultural insect pests as models for studying stress-induced evolutionary processes

Area of Science:

• Evolutionary biology
• Agricultural entomology
• Genomics

Background:

• Agricultural insect pests (AIPs) exhibit remarkable adaptability to environmental stressors and management practices.
• AIPs are understudied in evolutionary research despite being ideal models for rapid adaptation.
• Genomic mechanisms like selection on mutations, allelic variation, and phenotypic plasticity contribute to stress responses.

Purpose of the Study:

• To discuss how agricultural management-induced environmental stress drives epigenetic and genetic modifications in AIPs.
• To summarize evidence for stress-induced evolutionary processes, particularly in insecticide resistance.
• To highlight AIPs as valuable systems for understanding stress-induced evolution.

Main Methods:

• Review of existing literature on genetic and epigenetic mechanisms in AIP adaptation.
• Analysis of stress-induced evolutionary processes in the context of insecticide resistance.
• Theoretical perspective on the role of epigenetics in heritable stress resistance.

Main Results:

• Environmental stress can induce epigenetic modifications that lead to heritable, stress-resistant phenotypes.
• Both genetic and epigenetic changes contribute to the rapid adaptation of AIPs.
• Insecticide resistance in AIPs provides a key example of stress-induced evolution.

Conclusions:

• Studying AIPs provides novel opportunities to advance the understanding of stress-induced evolution.
• Epigenetic modifications are a crucial, yet often overlooked, factor in rapid adaptation to agricultural stressors.
• Further research into AIPs can illuminate fundamental evolutionary processes under anthropogenic pressure.