Department of Plant Developmental Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany.
Curr Top Dev Biol. 2010;91:323-48. doi: 10.1016/S0070-2153(10)91011-9.
In plants the switch from vegetative growth to flowering involves a major transition in the development of the shoot apex. This transition can occur once, in annual species, or repeatedly, in perennial plants. In annuals, flowering is associated with senescence and death of the whole plant, whereas perennials flower in consecutive years and maintain vegetative development after flowering. The perennial life strategy depends on differential behavior of meristems on a single plant so that some remain in the vegetative state while others undergo the floral transition. A. thaliana provides a powerful model system for understanding the mechanisms of flowering in annuals. Here we review the events that occur in the meristem of A. thaliana during the floral transition and compare these with our understanding of flowering in perennial systems.
在植物中，从营养生长到开花的转变涉及到茎尖发育的重大转变。这种转变可以在一年生植物中发生一次，也可以在多年生植物中多次发生。在一年生植物中，开花与整个植物的衰老和死亡有关，而多年生植物则在连续几年中开花，并在开花后保持营养生长。多年生的生活策略取决于单个植物上分生组织的不同行为，因此一些分生组织保持在营养状态，而另一些分生组织则经历花的转变。拟南芥提供了一个强大的模型系统，用于理解一年生植物开花的机制。在这里，我们回顾了拟南芥分生组织在花转变过程中发生的事件，并将这些事件与我们对多年生系统开花的理解进行了比较。
