Summary Secondary metabolites (SMs) are crucial for fungi and vary in function from beneficial antibiotics to pathogenicity factors. To generate diversified SMs that enable different functions, SM‐coding regions rapidly evolve in fungal genomes. However, the driving force and genetic mechanism of fungal SM diversification in the context of host‐pathogen interactions remain largely unknown. Previously, we grouped field populati...

Summary Plants generate multitude of aldehydes under abiotic and biotic stress conditions. Ample demonstrations have shown that rice‐derived aldehydes enhance the resistance of rice against the rice‐blast fungus Magnaporthe oryzae . However, how the fungal pathogen nullifies the inhibitory effects of host aldehydes to establish compatible interaction remains unknown. Here we identified and evaluated the in vivo transcriptional...