Host: The Japanese Society of Plant Physiologists
Pages 0282
Programmed cell death plays an essential role to the development and maintenance of bodies. Dysfunction of DAD1 (Defender against Apoptotic cell Death) has been linked to programmed cell death in animals and plants. One type of programmed cell death in animals is triggered by cytochrome c release from mitochondria via pores formed by BAX proteins. This type of programmed cell death is prevented by expression of BAX inhibitor 1 (BI-1). To study the regulation of Arabidopsis AtDAD1 and AtBI-1 in the plant tissue, we generated transgenic Arabidopsis plants expressing GUS driven by promoter fragments of AtDAD1 and AtBI-1. The promotor-GUS assay have shown that the genes of AtDAD1 and AtBI-1 express the root cap, vascular bundles of the root, abscission zones of the silique and septum of the maturity silique. These results suggest the involvement of the AtDAD1 and AtBI-1 in the developmental programmed cell death.
