摘要
SO2是一类典型的大气污染物,当其超过一定阈值时,植物的生理特性指标如超氧化物歧化酶(SOD)活性、可溶性糖、游离脯氨酸等物质将会增加,从而引起枝叶甚至植株死亡。但迄今为止,其相关研究存在一定的局限性,主要包括:研究工作主要集中在植物地上部分,对植物地下部分的研究较少;多数是集中时间内模拟SO2胁迫的单独观察,缺少长期受污染状态下遗传后代发生变异的系统综合分析;针对某种植物的独立分析较多,与近缘种的比较研究较少;植物对伤害反应研究较多,对适应性的研究较少。为进一步系统阐明SO2胁迫机制,应注重警示植物的开发与群落应用,将其用于监视环境的变化;注重抗性强植物的选育,以提高城市植物的抗污能力。
Sulfur dioxide is a kind of typical atmospheric pollutants, plant superoxide dismutase （SOD） activity, soluble sugar, proline and other substances will increase and even cause death of plant when S02 exceeds a certain threshold. So far the research work has some restrictions like most researches have to be limited on the aboveground parts of plants, while less researches on underground parts; most were separately observed during S02 stress, and short of long-term comprehensive analysis on the genetic generation variations under long polluted state; most studies were independent analysis of a plant compared with a few studies related species; many studies were on reactions of plant to S02 injury while a few studies on the adaptation. To further elucidate the system SO~ stress mechanisms, the future work should focus on development of warning plants and its community to monitor changes of environments; and emphasis on selecting plant with strong resistance to improve the anti-pollution ability of city plant.
出处
《山西农业科学》
2014年第4期422-424,共3页
Journal of Shanxi Agricultural Sciences
基金
山西省科技攻关项目(20120311017-2)
关键词
二氧化硫胁迫
抗性植物
敏感植物
机理
sulfur dioxide stress
resistant plant
sensitive plant
mechanism
