AUX1 — Cicer arietinum

Summary

LOC101497816 (CaAUX1) on chickpea chromosome 2 encodes a protein with auxin influx transmembrane transporter activity, amino acid permease activity, symporter activity, auxin binding, auxin receptor activity, and ubiquitin-protein transferase activity. The protein localises to the membrane, plasmalemma, endosome, Golgi complex, cytoplasm, SCF complex, and ubiquitin ligase complex. CaAUX1 is associated with auxin polar transport, positive gravitropism, root hair cell differentiation, root cap development, stamen development, somatic embryogenesis, establishment of planar polarity, and responses to auxin, ethylene, nematode, and phosphate starvation. The gene has been linked to numerous traits including drought tolerance, salt tolerance, photosynthetic rate, flowering time, seed yield, seedling growth and development, leaf morphology, leaf vein morphology, vascular tissue morphology, root system architecture, lateral root length, root thickness, adventitious rootless, and herbicide sensitivity. Studies of related genes in other species connect the family to root gravitropism, auxin uptake, leaf flattening, hypocotyl hook formation, and biomass production.