Putative transcription factor that coordinates gene expression underlying the differentiation of the pedicel abscission zone. May also be involved in the maintenance of the inflorescence meristem state. Widely expressed with highest levels in shoot tips and axillary buds. Also found in fully developed pedicels and flowers. Mutation in 'JOINTLESS' yields 'stemless' tomato fruits which are widely used in the processing tomato industry. The fruits support mechanical harvesting and are not subject to physical wounding during transportation.