TT8 — Phaseolus vulgaris

Summary

PvTT8 (PHAVU_007G171333) on chromosome 7 of French bean encodes a protein with a bHLH domain and DNA-binding and protein dimerization activity. This gene is associated with the regulation of flavonoid, proanthocyanidin, and anthocyanin anabolism, as well as pigmentation, trichome differentiation, and epidermal cell fate specification. It is linked to seed coat color and morphology, seed weight, germination rate, and anthocyanin content. Associations also include responses to UV-B light, oxidative stress, high and low temperature stress, cadmium concentration, and biotic stress traits. The gene is connected to plant height, root hair length, root epidermal cell length, stem dry weight, relative growth rate, flowering time, and oleic acid content. Studies of related genes in other species link the family to proanthocyanidin accumulation, seed coat pigmentation, trichome formation, and UV-B tolerance.