This research discovered a new virus that infects a beneficial fungus used in agriculture. Unlike many viruses that harm their hosts, this virus actually helps the fungus produce more spores while maintaining its ability to protect plants from diseases and promote plant growth. This finding is significant for sustainable agriculture. Impacts on everyday life: • Provides new tools for developing better biological alternatives to chemical pesticides • Helps improve crop protection methods that are safer for the environment • Contributes to more sustainable farming practices • Could lead to better plant growth-promoting products for gardens and agriculture • May help reduce reliance on chemical pesticides in food production