PIN1 — Cicer arietinum

Summary

CaPIN1 (LOC101491826) on chickpea chromosome 8 encodes an auxin efflux carrier of the PIN family, with annotated inositol-1,4-bisphosphate 1-phosphatase activity, phosphatidylinositol phosphate binding, and clathrin binding. It is associated with auxin efflux and influx transporter activities, regulation of endocytosis, cell polarization, phragmoplast microtubule organization, and anthocyanin accumulation in response to UV light. The gene is linked to numerous agronomic traits including lateral root number and length, root mass density, shoot axis branching, seed set percent, leaf vein morphology, phototropism, gravity response, and sensitivity to brassinosteroids, ethylene, gibberellic acid, and osmotic stress. It localizes to the auxin efflux carrier complex, recycling endosome, clathrin-coated vesicles, and the basal plasma membrane. Related genes in other species are associated with polar auxin transport, leaf vascular patterning, flower formation, root meristem growth, and phototropism.