植物根内通气组织形成的研究进展

植物能否在湿地或淹涝环境中生长，很大程度上取决于植物是否具有健全发达的通气组织。在结合形态学和分子生物学等方面研究的基础上，概述了植物根内通气组织的形成过程，主要涉及生理功能、诱导因子和相关酶等，推测细胞程序性死亡是溶生性通气组织形成的机理，乙烯在整体信号转导网络中起关键性中介作用。

Research Progress on Aerenchyma Formation in Plant Roots

Plants living in wetlands or waterlogged environments usually have well-developed aerenchyma. This paper reviews the research in the field, especially morphology and molecular biology, to illustrate the formation of aerenchyma, its physiological functions, inducing factors and enzymes involved in the process. In short, programmed cell death （PCD） is shown to be the mechanism involved in lysigenous aerenchyma formation by the phytohormone ethylene. Ethylene has a crucial role by activating signal transduction in the whole network.