Advances in understanding the mechanisms of organ abscission in vivo and in vitro plants

Plant organ abscission is a fundamental biological process. and is a stress and evolutionary mechanism formed to adapt to environmental changes due to external signal stimulation or age development. Flower, leaf and fruit abscission are common in production, not only in vivo plants but also in in vitro culture. Breakthroughs have been made in organ abscission studies for model plants and crops in vivo plants, but little is known about organ abscission in in vitro culture, which is a complex biological process. This paper reviews the organ abscission mechanism from the perspectives of cell histology, physiological biochemistry and molecular biology and looks forward to organ abscission research, which aims to fully clarify the plant organ abscission mechanism and provide theoretical and technical guidance for the normal/abnormal abscission of plant organs in actual production.