Scientists discovered that a protein called PRMT5 in Ganoderma lucidum mushroom plays a key role in producing cellulase enzymes that break down plant cellulose. By controlling a specific gene (eg2) through a process called histone methylation, PRMT5 increases cellulase production. This finding could help develop more efficient ways to convert agricultural waste like corn straw into useful sugars for biofuels and other industrial products.