VIT1 — Phaseolus vulgaris

Summary

PHAVU_002G322800, designated PvVIT1, encodes a member of the Ccc1 family. The product exhibits iron channel activity, manganese ion transmembrane transporter activity, and DNA-binding transcription factor activity, and localises to the vacuolar membrane and nucleus. In French bean, PvVIT1 is associated with cellular and multicellular iron and manganese ion homeostasis, iron transport, cell wall modification, and maintenance of floral meristem identity. The gene has been connected to iron accumulation, vacuolar storage, and distribution in seeds, as well as to seedling development and growth. It is also linked to a wide range of floral and inflorescence development traits, including flowering time, petal and sepal morphology, and floral organ identity. Studies of related genes in other species link the family to vacuolar iron transport, iron homeostasis, and seed iron localisation.