Abstract
In Arabidopsis thaliana, leaves have adaxial side (upper side) and abaxial side (lower side), which differ in shapes of cells and number of stomatas or trichomes. Recently, some genes are shown to play important roles in the establishment of the adaxial/abaxial identity. The expression regions of these genes are restricted to the either side. It has been suggested that the adaxial- or abaxial-specific expression patterns require the pre-exising polarity in the leaf primordia. What mechanisms determine the polarity is not well known. To understand the mechanisms, we try to find new genes involved in the adaxial/abaxial specific expressions. To obtain mutants in which the expression pattern alter, we screened several mutants from mutagenized FILp::GFP transformants, which express GFP on abaxial side. #1-63 mutant express GFP on adaxial side also. We will report analyses of phenotypes and expression patterns of adaxial makers in #1-63. Cloning of the gene is in progress.
