TTG — Solanum tuberosum

Summary

PGSC0003DMG400026477, designated StTTG on potato chromosome 3, encodes a WD40-repeat protein of the DCAF7-like family, annotated as Transparent Testa Glabra 1. The product possesses DNA-binding transcription factor activity, protein kinase activity, and protein dimerization activity, and is associated with protein folding chaperone functions. StTTG is linked to the regulation of anthocyanin, proanthocyanidin, and flavonoid biosynthesis, as well as anthocyanin breakdown, hormone anabolism, and signaling. It has been connected to trichome morphogenesis and spacing, epidermal cell fate specification, and cell division. Traits associated with this gene include seed color, flower color, leaf trichome density, root hair length, anthocyanin content, iron concentration, brassinosteroid and ethylene sensitivity, and responses to high and low temperature stress. The protein localizes to the nucleus, cytosol, plasmalemma, vacuole, and plasmodesmata. Studies of related genes in other species link the family to trichome formation, seed coat development, root hair patterning, and proanthocyanidin accumulation.