Abstract
To reveal the function of a MADS-box gene, AGL24, we generated and analyzed transgenic plants that overexpress AGL24 (AGL24ox). These transformants showed pleiotropic phenotypes, such as early flowering, conversion of floral organs and defect in organ abscissions, supposing that AGL24 is involved in flower development. AGL24ox plants flower earlier than wild-type plants both under LD and SD, but are sensitive to SD. Northern analysis of AGL24ox plants showed reduction of AP1 expression in comparison with wild type, and it would be resulting ap1-like flower phenotypes. We also investigated gene expression profile of AGL24ox plants by using cDNA microarray. As a result, expression of AP1 and several genes including a putative auxin-regulated gene, were decreased. Analysis of double mutants between AGL24ox and mutants that affect flowering time or floral organ identity, are currently undertaken. Here, we would discuss the probable functions of AGL24.
