The Anthocyanin Composition and Key Regulatory Genes Underlying the Color Variation Between Potato Tuber Bud Eyes and Periderm.

ABSTRACT: The pigmentation patterns of potato tubers are complex and diverse, often exhibiting significant tissue specificity. This study was conducted to elucidate the molecular mechanisms underlying the differential pigmentation in different parts of potato tubers using two cultivars, 'Huashu 12' and 15EM36-26, which exhibit opposite pigmentation patterns between the bud eyes and the tuber periderm. Metabolomic analysis revealed that cyanidin, pelargonidin, and malvidin are the key anthocyanin components responsible for the observed pigmentation differences. A total of 118 common differentially expressed genes in the differentially pigmented tissues of both cultivars were identified in transcriptomic analysis, including key structural genes of the anthocyanin biosynthesis pathway (such as StPAL

SUBMITTER: Zhao X 

PROVIDER: S-EPMC12845459 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature