转录因子JAGGED调控拟南芥花瓣的形态建成

Transcription Factor JAGGED Regulates Morphogenesis of Arabidopsis Petals

在自然界中,被子植物的花瓣有着特殊的生物学功能,花瓣在植物的生殖过程中发挥重要作用,是与多种授粉昆虫产生接触的界面,有利于授粉者驻留在花瓣上进行高效的传粉作业,从而影响植物的授粉和农作物产量。拟南芥是一种模式植物,其花瓣的结构简单,细胞类型少,是研究器官形态建成的一种非常理想的模型。JAGGED(JAG)是一类具有单链C2H2锌指结构的转录因子,在植物的器官形态发育和极性生长过程中具有非常重要的调节作用。本综述讨论了拟南芥转录因子JAG作为重要的生长调节子调控花瓣的生长发育和形态建成,以及JAG通过调控生长素信号通路、边界特化和DNA复制等方面相关基因的表达来影响花瓣器官发育,并根据目前的研究进展对JAG调控花瓣形态建成的分子机制进行了分析总结。

In nature world, the petals of angiosperms have special biological functions. Petals play an important role in the reproductive process of plants, and exist as an interface of many kinds of pollinating insects. Pollinators can land on petals for effective pollination, thus affecting plants＇ pollination and yields of crops. Arabidopsis thaliana is a model plant, which has petals with simple structure and fewer cell types. It is a fantastic model for studying organ morphogenesis. JAGGED（JAG） is a single-chain C_2H_2 zinc finger motif containing transcription factor that plays an important role in the regulation of plant organ development and polarity growth. This review discussed Arabidopsis JAG transcription factor as an important growth regulator participating in the development and morphogenesis of the petals, and JAG affects petal organs development by regulating the expression of auxin signaling pathways, border specialization and DNA replication related genes. The molecular mechanisms of JAG regulated petal morphogenesis were analysed and discussed based on the current research progesses.