A novel RING finger gene, SbRFP1, increases resistance to cold-induced sweetening of potato tubers

► A novel C3HC4-type RING finger gene, SbRFP1, was cloned from potato. ► SbRFP1 plays crucial roles in potato cold-induced sweetening. ► SbRFP1 functions as a negative regulator of BAM1 and StvacINV1. ► It is the first report that RING finger protein contributes to potato CIS.