Crawford Brian C W, Yanofsky Martin F
Division of Biological Sciences, University of California San Diego, La Jolla, California 92093, USA.
Curr Biol. 2008 Oct 28;18(20):R972-8. doi: 10.1016/j.cub.2008.08.010.
In angiosperms, sexual reproduction requires a sperm cell, contained within a pollen tube, to fertilize the egg cell. The pollen tubes are capable of growth but have a difficult journey, as egg cells are buried within the ovary of the carpel. Several tissues, known collectively as the reproductive tract, develop within the carpel to facilitate the journey of the pollen tube. The genes involved in the formation and function of the reproductive tract have largely remained a mystery but are crucial for successful fertilization. This review summarizes recent advances in our understanding of the genetic control of reproductive tract development.
在被子植物中，有性生殖需要花粉管中的精子细胞使卵细胞受精。花粉管能够生长，但旅程艰难，因为卵细胞深埋在心皮的子房内。心皮内发育出几种组织，统称为生殖道，以促进花粉管的行程。参与生殖道形成和功能的基因在很大程度上仍是个谜，但对成功受精至关重要。本综述总结了我们在理解生殖道发育的遗传控制方面的最新进展。
