RAC1 — Asparagus officinalis

Summary

A4U43_C01F12050 (symbol RAC1, preferred name AoRAC2) on asparagus chromosome 1 encodes a small GTPase of the Rho family. The product is annotated with Rab GDP-dissociation inhibitor, protein prenyltransferase, and abscisic acid glucosyltransferase activities, and binds GDP, GTPase, and G-actin. It is associated with small GTPase-mediated signal transduction, regulation of actin cytoskeleton organization, cell polarity, calcium-mediated signaling, and protein geranylgeranylation. Localization evidence links it to the pollen tube tip, site of polarized growth, and filiform apparatus. The gene is associated with yield, seed yield, root hair length, lateral root number, abscisic acid concentration, cadmium concentration, and wheat powdery mildew disease response. Related genes in other species are linked to pollen tube growth, auxin sensitivity, embryo development, and bacterial wilt disease resistance.