地表臭氧和土壤水分亏缺对植物的交互效应研究进展  

Research advance in interactive effects of ozone concentration and soil water deficit on plants

作　　者：吴荣军[1,2] 

机构地区：[1]江苏省农业气象重点实验室,南京信息工程大学,南京210044 [2]南京信息工程大学应用气象学院,南京210044

出　　处：《生态学杂志》2017年第3期846-853,共8页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(41575110)资助

摘　　要：全球气候变暖背景下,地表臭氧浓度上升,干旱化趋势明显。本文简要介绍了地表臭氧和土壤水分亏缺对地表植被和农作物的胁迫效应,重点评述了其交互作用下自然植被和农作物的气孔响应及抗氧化响应特征,理清了土壤水分亏缺条件下臭氧对植物的伤害效应,因植物种类和小麦品种的不同而得出两种相反的结论:一种观点认为,干旱导致脱落酸增加,从而诱导气孔关闭,减轻臭氧伤害效应;而另一种观点认为,臭氧促进乙烯合成,出现气孔呆滞行为,干旱保护作用缺失。同时,综述了土壤水分亏缺条件下臭氧胁迫效应评估方法的发展,理清了开展土壤水分亏缺与臭氧交互效应评估方法的研究思路。最后,提出了加强交互效应研究的可能研究方向和途径。Surface ozone concentration has increased,and more parts of land regions are predicted to become drier under the background of global warming. The stress effects of surface ozone and soil water deficit on the natural plants and crops were briefly presented in this review. Subsequently,the interactive effects of surface ozone and soil water deficit on natural plants and crops were commented intensively,highlighting the response characteristics of stomata conductance and antioxidant system. Two opposite conclusions of injury effects of ozone on the plants under the condition of soil water deficit were raveled out for different species of plants and crops. One opinion deemed that drought promoted the formation of abscisic acid,inducing stomatal closure to reduce the injury effects of ozone. The other opinion argued that ozone accelerated ethylene biosynthesis,and then slowed down the stomatal closure of plants and the stomatal sluggishness occurred,revealing no protection of drought. Meanwhile,the advance of assessment methods for the stress effects of ozone under the condition of soil water deficit was reviewed,and the research ideas of assessment methods for interactive effects of ozone and soil water deficit were further confirmed. Finally, the possible research orientations and approaches of interactive effects between surface ozone and soil water deficit on natural plants and crops were proposed.

关 键 词：臭氧 干旱 脱落酸 气孔呆滞 交互效应 

分 类 号：Q948[生物学—植物学]