Rhamnose-containing cell wall polymers suppress helical plant growth independently of microtubule orientation
Saffer et al. identified an Arabidpsis mutant with swirled petals and with petal epidermal cells that show a left-handed (but never right-handed) twist. They mapped the mutation to the RHAMNOSE BIOSYNTHESIS1 (RHM1) gene, which is most highly expressed in petal epidermal cells and encodes an enzyme that catalyzes the biosynthesis of UDP-L-rhamnose, a component of […]