A2 — Phaseolus vulgaris

Summary

PHAVU_009G044700, also known as PvA2, PvTTG1 or PvURM23, encodes a WD40 repeat-containing protein on French bean chromosome 9. The product is annotated with DNA-binding transcription factor activity, protein kinase activity, protein dimerization activity, and protein folding chaperone functions. PvA2 is associated with the regulation of trichome morphogenesis and spacing, epidermal cell fate specification, root hair cell differentiation and development, and the positive regulation of anthocyanin and proanthocyanidin biosynthesis. It is linked to pigmentation, vacuole organization, and cell fate commitment. The gene has been connected to numerous traits including seed coat color, seed weight, leaf trichome density, root hair length, anthocyanin and flavonoid content, phosphate and iron concentration, brassinosteroid and auxin sensitivity, and responses to biotic and abiotic stresses such as high and low temperature. Studies of related genes in other species link the family to epidermal cell patterning, root hair development, seed coat pigmentation, and proanthocyanidin accumulation.