Metschnikowia pulcherrima as an efficient biocontrol agent of Botrytis cinerea infection in apples: Unraveling protection mechanisms through yeast proteomics

•Metschnikowia pulcherrima Mp-30 prevents Botrytis cinerea infection in apples.•Multiple yeast mechanisms are involved in the gray mold biocontrol ability.•There is a reprogramming of yeast metabolism involved in B. cinerea inactivation.•Membrane trafficking of yeast compounds is enhanced in the fungal presence.•Yeast envelope composition has a major role in the antagonistic interaction.