RNA fingerprinting analysis of Oenococcus oeni strains under wine conditions

► This study developed a method for global gene expression of O. oeni strains. ► RAP-PCR is a useful tool to study O. oeni strains behavior under wine conditions. ► RAP-PCR can be used to select markers for quality and safety control. ► O. oeni regional strains showed more variation on transcription profiles. ► Malolactic starter strains showed more restricted transcription profiles.