TT8 — Solanum tuberosum

Summary

StTT8 (PGSC0003DMG400012891) on potato chromosome 9 encodes a basic helix-loop-helix (bHLH) transcription factor, also known as Anthocyanin 1, with DNA-binding and protein-dimerization activity. It is associated with the regulation of flavonoid and proanthocyanidin anabolism, anthocyanin breakdown, and responses to UV-B light, drought, salt, and high-temperature stress. The gene is linked to numerous agronomic traits including flower and fruit color, leaf color, starch yield and content, seed weight, stem dry weight, net photosynthetic rate, transpiration rate, root hair length, trichome morphology, cadmium concentration, and biotic stress responses. It localizes to both the nucleus and cytoplasm. Related genes in other species are associated with anthocyanin pigmentation, proanthocyanidin accumulation, seed coat pigmentation, trichome formation, root hair development, and UV-B tolerance.