Red-TE Homozygous Alleles of MdMYB10 Confer Full-Red Apple Fruit Skin in a High-Temperature Region

Apple is a major fruit crop grown worldwide and provides humans with an essential diet health benefits. One of the benefits related to accumulation anthocyanin, which also attractive red colour. It known that MdMYB10 allele containing transposable element (TE) insertion in its promoter (termed Red-TE allele) underlies anthocyanin colouration skin cultivated apples. However, distribution this wider Malus germplasm accessions not clear. In study, we showed RNA was specifically expressed from by using allele-specific expression analysis transcriptome data. cultivars hybrids homozygous alleles stronger colour than those heterozygous after analysing 65 337 hybrids. Furthermore, both hetero- plants growing same high-temperature conditions had different colourations. detected 16 wild apple showing skin, indicating these apples conferred allele. These findings provide guidance for selecting able develop consistent under high growth temperature open opportunity identifying novel genetic variants underpinning species.