Virus hijacks caterpillar’s gut-brain link to spread, Pg14

Key Highlights:

• HearNPV viruses cause cotton bollworm caterpillars to climb to plant tops before death.
• The virus spreads via wind and gravity from the elevated position, infecting healthy larvae.
• Infection triggers tachykinin release, which travels to the brain and activates the HaTKR receptor.
• This activation makes the caterpillar attracted to light, causing it to climb upwards.

Detailed Insights:

• The HearNPV virus manipulates the caterpillar's behavior to enhance its own propagation.
• Tachykinin acts as a key chemical messenger in the caterpillar's body, facilitating the virus's control.
• The HaTKR receptor in the brain is crucial for mediating the behavioral change induced by the virus.
• This research highlights the complex interactions between viruses and their hosts at a molecular level.

Scientific/Technical Concepts Involved:

• HearNPV viruses: Viruses that infect insects, manipulating their behavior for propagation.
• Tachykinin: A chemical messenger involved in transmitting signals within the caterpillar's body.
• HaTKR receptor: A receptor in the caterpillar's brain that responds to tachykinin, altering behavior.