NAS1 — Cicer arietinum

Summary

CaNAS1 (LOC101509924) on chickpea chromosome 4 encodes a nicotianamine synthase, an enzyme with a nicotianamine synthase domain and a SAM-dependent methyltransferase superfamily domain that catalyses nicotianamine anabolism. The gene is associated with phloem transport, nitric oxide storage, pollen tube growth and pollen development, as well as response to zinc. It has been linked to cadmium tolerance, iron translocation, chlorosis, iron deficiency tolerance and rRNA gene expression. Studies of related genes in other species connect the family to iron homeostasis, iron deficiency response, cadmium detoxification, and iron and zinc content traits. Distant sequence similarity links the family to carotene content, zinc sensitivity, salt response and root morphology traits. The product localises to the nucleus.