Induced Defense in Ryegrass-Epichloë Symbiosis Against : Impact on Peramine Levels and Pest Performance.

The Argentine stem weevil (ASW), a major pest in ryegrass pastures, causes significant agricultural losses. Ryegrass can establish a symbiotic association with endophytic fungi, which supply chemical defenses, including peramine. This symbiosis helps protect ryegrass by providing peramine, which acts as a primary defense.