Northern blot analyses revealed there is a homologue of Atdad1 in tobacco and the expression is more in leaf and flower.But with the senescence of leaf,the expression reduced gradually.Using transgenic tobacco with 35S-Atdad1,we studied the connection of Atdad1 and apoptosis.The results showed 48℃ heat 4 hours or 75 ng/mL actinomycin D treat 48 hours caused the normal cell apoptosis,but under the same condition,the transgenic cell showed no change.And during the process of apoptosis of normal cell,the expre...