<i>Uzu</i>Mutation in Barley (<i>Hordeum vulgare</i>L.) Reduces the Leaf Unrolling Response to Brassinolide

Abstract

A sensitive method to examine the brassinolide (BL) response of barley (Hordeum vulgare L.) using dark-grown leaf segments was established based on the known method for wheat. BL responses of 53 dwarf isogenic lines of barley were examined, and two lines were found having a uzu gene that doesn't respond significantly. These results indicate that uzu dwarfism may be caused by the non-responding character to BL.