植物器官从头发生的细胞发育谱系研究进展

Plant can survive in complex environment due to its remarkable regeneration capacity. Tissue repair, de novo organogenesis and somatic embryogenesis are three types of plant regeneration. De novo organogenesis refers to the formation of adventitious roots or shoots from the regeneration-competent cells in wounded or detached plant organs. Cuttage and tissue culture are the examples of de novo organogenesis for rapid production of new plants. De novo organogenesis can be divided into direct de novo organogenesis and indirect de novo organogenesis and callus formation is an important process in the indirect de novo organogenesis. The cell developmental lineage and tissue morphogenesis of de novo organogenesis include three stages: cell division, the formation of stem cell niche (SCN) and organ formation. This paper summarizes the morphological changes of regenerative adventitious root and adventitious bud in order to provide reference for further exploration of the mechanism of de novo organogenesis.