Studies on the Relation Between the Reactive Oxygen Species Scavengers and Cold Tolerance of Chaling Wild Rice(Oryza rufipogon Griff.)at Seedling Stage
In order to explore the physiological and biochemical mechanism of Chaling wild rice(O.rufipogon Griff.)at seedling stage,the effect of chilling stress on the reactive oxygen species(ROS) scavenging system in Chaling wide rice was studied using Dongxiang wild rice(O.rufipogon Griff.)and 4 rice cultivars (O.sativa L.)of differential cold tolerance as controls.The results indicated that under low temperature,the increasing extent of the activity of superoxide dismutase(SOD),peroxidase(POD),catalase(CAT) and the content of ascorbic acid(AsA) and glutathione (GSH) was higher in Chaling wild rice than in the cold sensitive rice cultivars,while it was similar to the cold tolerance control.However,the producing velocity of O_2~(-·) and content of malondialdehyde (MDA) was lower in Chaling wild rice than in the cold sensitive ones,while was similar to the cold tolerance control.Based on above results,it is concluded that the chilly-tolerance of Chaling wild rice is closely relative to its ROS scavenging system.
Oryza rufipogon griifchilling toleranceROS scavenging system
国家科技期刊平台
NSTL
万方数据
维普
