The full-length cDNA sequence of IbUF3GT was cloned from purple-fleshed sweet potato.
IbUF3GT expression profiles were associated with anthocyanin biosynthesis in sweet potato.
• IbUF3GT was a functional enzyme involved in anthocyanin biosynthesis base on complementation of Arabidopsis UF3GT mutation.
A 758 bp promoter of IbUF3GT gene was cloned and the key promoter activity region was found between − 758 bp and − 633 bp.