Abstract
In Arabidopsis, the SLR gene encodes IAA14, a member of Aux/IAA protein family. The solitary-root (slr) mutant, whitch has a gain-of-function mutation in IAA14 has no lateral roots, no root hairs, abnormality in gravitropic responses both in roots and hypocotyls, and has reduced sensitivity to auxin. In order to identify genes involved in auxin-regulated these root morphogenesis, we compared gene expression profiles between wild-type and slr mutant roots (with or without auxin treatment) by using DNA microarray (Agilent Arabidopsis-1, 14,403 genes). We will present the results on genes regulated by auxin and/or SLR gene from the microarray analysis. We are now analyzing the expression pattern of these genes.
