细胞和分子水平的拟南芥绒毡层发育

【作者】 杨仲南；

【机构】 上海师范大学生物系；

【摘要】 绒毡层细胞在花药发育形成花粉过程中起关键的作用。绒毡层为花粉形成过程中负责胼胝质的合成、胼胝质的降解、花粉外壁的形成,以及提供花粉发育所需的各种营养物质。绒毡层细胞不同于一般植物细胞,它具有两个细胞核,在花药发育过程中程序性死亡。在模式植物拟南芥中,已经发现五个转录因子在绒毡层发育中起重要的调控作用:DYT1,TDF1,AMS,MYB103和MS1。这些转录因子构成了绒毡层发育的遗传通路,调控绒毡层重要的生物学功能。更多还原

【Abstract】 Tapetum plays critical role in anther development and pollen formation. It provides enzymes for callose synthesis and callose dissolution, materials for pollen wall formation, and nutrition for pollen development. Tapetum has its unique feature as it contains two nucleuses in a single cell and tapetum cells performed program cell death during anther development. In Arabidopsis, a total of five transcription factors have been identified to regulate tapetum development: DYT1, TDF1, AMS, MYB103 and MS1. These transcription factors form a genetic pathway to regulate tapetum biological functions.更多还原