Rhizobacterial Modulation of Maize Defense Alters Herbivore Performance and Parasitoid Behavior.

Inoculation with Azospirillum brasilense enhances maize growth and herbivore performance but also boosts parasitoid attraction, revealing complex trophic interactions.

• Why it matters: Understanding how beneficial microbes influence plant defenses and pest dynamics is crucial for sustainable agriculture, yet the effects across different trophic levels remain poorly understood.
• What they did: The study applied A. brasilense Ab-V5 to maize and examined its impact on plant growth, herbivore development, and parasitoid behavior, analyzing volatile emissions and insect performance.
• The result: Inoculation improved plant nutrition and increased herbivore growth, while also attracting parasitoids, indicating trade-offs that could inform microbial use in pest management strategies.