Researchers at Kyoto University and Chosun University used CRISPR/Cas9 to disable gene mbp1  in Pleurotus ostreatus , producing mycelium mats that were approximately 30% stiffer and 50% stronger in tension than unedited controls. The edited fungal strains also produced harder mycelium-based composites under compression testing, and lost the ability to form fruiting bodies, which simplifies industrial production by keeping the fungus in its material-forming growth phase. This