Abstract
The ASYMMETRIC LEAVES2 (AS2) gene of Arabidopsis thaliana is involved in development of flat and symmetrical leaves. AS2 encodes a protein containing a plant specific domain that consists of a C-motif, a conserved glycine residue and a leucine-zipper-like sequence in the amino-terminal half (AS2/LOB domain). AS2 belongs to the AS2/LOB family that is composed of 42 genes encoding AS2/LOB domain. The members except AS2 are designated ASL/LBD genes. It have been reported that several ASL/LBD genes are auxin responsible and some of the members are involved in the formation of lateral roots. Auxin is important for not only the formation of lateral roots but also that of lateral organs in the aerial part. We investigated auxin responsibilities of all ASL/LBD genes to search ASL/LBD genes that might function in the aerial part in response to auxin. ASL23/LBD19 was induced by auxin and its transcript accumulated in aerial part and root. To investigate expression of ASL23/LBD19, we analyzed two types of GUS transgenic plants and YFP fused ASL23/LBD19 transgenic plant. We will report the results of the expression analysis.
