冷季型草坪草耐热性研究进展  

Research advances in heat resistance of cool-season turfgrasses

作　　者：谭真真 张夏香 杨志民 TAN Zhen-zhen;ZHANG Xia-xiang;YANG Zhi-min(College of Agro-Grassland Science,Nanjing Agricultural University,Nanjing 210095,China)

机构地区：[1]南京农业大学草业学院,江苏南京210095

出　　处：《草业学报》2021年第9期193-202,共10页Acta Prataculturae Sinica

基　　金：国家自然科学基金面上项目(31672480)资助。

摘　　要：冷季型草坪草耐寒性强,绿期长,观赏效果好,因此被广泛应用在气候过渡地带的公园、运动场及草坪中。但由于冷季型草坪草耐热性差,夏季高温会引起草坪草的一系列生理代谢过程紊乱,从而使其表观质量下降,病害频发,草坪休眠、枯黄甚至死亡,影响草坪观赏或运动功能的发挥。本研究从生理和分子机制两个方面,重点综述了冷季型草坪草在高温胁迫下碳代谢、抗氧化代谢、激素代谢、耐热基因和转录等方面研究进展,分析了目前冷季型草坪草耐热性研究存在的主要问题,并对其研究前景进行了展望,以期为进一步的冷季型草坪草耐热机理研究提供理论参考。Cool-season turfgrasses are widely used on parks,sports fields and lawn in climate transition zones,due to their strong cold resistance,long green period and good ornamental effect.However,cool-season turfgrasses are sensitive to heat stress.High temperature in summer causes a series of physiological and metabolic disorders of turfgrasses,resulting in a decline in turf quality,increased occurrence of disease,dormancy,withering and even plant death,further affecting the performance of lawns or sports fields.This review describes the physiological and molecular mechanisms of high temperature stress tolerance in cool-season turfgrasses,especially with respect to carbon metabolism,antioxidant metabolism,hormone metabolism,heat-related genes and transcription factors.Current issues and future prospects pertaining to heat resistance mechanisms of cool-season turfgrasses are discussed,in order to provide a theoretical reference for use in further studies.

关 键 词：冷季型 草坪草 耐热性 生理机制 分子机制 

分 类 号：S688.4[农业科学—观赏园艺]