冷驯化影响越冬作物光合特性和株型特征的生理基础与分子机制的研究进展

The Physiological and Molecular Mechanisms on Photosynthesis and Phenotype of Winter-Type Crop in Cold Acclimation

植物在冷驯化过程中,以CBFs(C-repeat binding factor)为调控核心,通过调节冷相关基因的表达而提高抗冷能力。植物应答低温的部分基因还受到光的调节,同时冬性作物与春性作物不同,冬性作物在冷驯化提高抗冷性的同时光合作用、株型等发生协同变化,体现了植物冷驯化机制的复杂性。本文主要综述冬春性作物冷驯化中光合作用和株型表现的研究进展,总结温度和光复杂信号的感知与转导途径,为植物冷驯化机理研究及作物耐冷育种提供参考。

The cold resistance of plants is improved by regulating the expression of cold related genes in cold acclimation. It was found that the chloroplast was one of important organdies in response to low temperature, especially part of the genes responded to low temperature by light regulation in winter crops. The cold resistanc is also improved with changing photosynthesis, phenotype and leaf structure synergistically in cold acclimation. The mechanism of plant in cold acclimation is more complex. This paper reviewed the research progress of crop photosynthesis and plant performance in cold acclimation and summarized the complex signal transduction pathways that CBFs were regulatory core, temperature and light were an integrated signal. It provide reference to study the mechanism of cold acclimation of plants for crop breeding.