植物离体器官发生控制机理研究进展

植物离体器官发生不仅是获得大量无性繁殖植物和进行基因转化的重要途径，而且亦是研究植物发育问题的主要实验系统之一。迄今为止，包括营养器官和生殖器官在内的几乎所有的器官都可以在离体条件下得到再生，为深入研究植物离体器官发生的分子机理奠定了基础。本文着重介绍了营养器官发生过程基因表达的调节及重要功能基因的作用，并对器官特征决定基因在生殖器官发生过程中的作用进行了分析，提出了揭示离体器官发生分子机理的主要途径。

Advances in the Molecular Mechanism of in vitro Plant Organogenesis

Plant organ regeneration has an important role in plant reproduction and genetic engineering, and also provides an experimental system to study molecular mechanism of plant development. So far, almost all of vegetative and reproductive organs have been regenerated in vitro, which might be helpful to further understand the molecular mechanism of plant organogenesis. In this review, regulation of gene expression and functions of a few genes involved in the regeneration of vegetative organs are introduced. Further, roles of organ identity genes, such as HAG1 and HoMADS1, are evaluated in reproductive organ development. Finally, we discuss the questions which may be focused in the future study.