乙烯在幼苗根生长发育中调控作用的研究进展

Research Advances in Ethylene Regulation to Growth and Development of Seedling Root

幼苗建成是植物生长的关键时期之一,主要受环境因子和激素影响,大量研究表明乙烯作为重要的信号分子参与并调控根的生长发育。近年来,有关乙烯对植物生长发育的调控机理研究一直深受关注。归纳了几十年来有关乙烯生物合成途径与产生途径方面的研究成果,并以此为中心阐述了乙烯在幼苗根生长发育中产生的生理效应,如主根伸长生长、侧根和不定根形成,幼苗的抗逆性和适应性,通气组织形成等;更进一步分析了根生长发育过程中乙烯的信号作用、乙烯与其他信号分子的相互作用,及其对相关基因表达的调控。综上研究基础,提出了乙烯在生产实践、生理作用及分子调控机理方面的研究问题,以更有益于人们合理应用乙烯调控技术。

Seedlings establishment is one of critical periods in plant growth and development, and it is largely affected by environmental factors and hormonal regulation. As important signaling molecules, ethylene participates in and regulates the growth and development of seedling root according to numerous studies and the regulation mechanism of ethylene affecting in plant growth and development has been a research hotspot in recent years. The research achievements about Ethylene biosynthesis and production pathway was summarized in recent decades. A series of physiological effects produced was expounded by ethylene affecting in seedling root growth and development such as primary root elongation growth, lateral root and adventitious root initiation, stress resistance and adaptability of seedling root, aerenchyma formation etc. Furthermore, the signal function of ethylene, the interaction between ethylene and other signal molecules as well as ethylene to related genes in process of root growth regulation and development were analyzed. On the base of these studies, the further research problems of ethylene in terms of production practice, physiological action mechanism and molecular regulation mechanism are put forward, thus these could be useful for people to reasonable utilize the technology of ethylene regulation.