VIT1 — Phaseolus vulgaris

Summary

PHAVU_002G323700, designated PvVIT1, encodes a member of the Ccc1 family. The protein exhibits iron channel activity, manganese ion transmembrane transporter activity, and DNA-binding transcription factor activity, and localises to both the vacuolar membrane and the 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 linked to iron accumulation, distribution, and vacuolar storage in seeds, as well as to seedling development and growth. Associations with flowering time, floral organ development, and inflorescence morphology traits have also been observed. Studies of related genes in other species connect the family to vacuolar iron transport, iron homeostasis, and iron distribution in seeds.