三种植物对UV-B辐射和臭氧污染的电生理响应

ELECTROPHYSIOLOGICAL RESPONSES OF THREE PLANT SPECIES TO UV-B AND OZONE STRESSES

研究了仙人掌、芦荟和假明镜对紫外线UV-B辐射和臭氧胁迫的电生理响应。不同植物在不同胁迫下电生理响应不同,反映了植物对UV-B辐射和臭氧胁迫的敏感程度和耐受性存在差异。对UV-B辐射胁迫的耐受性从弱到强依次为假明镜、芦荟和仙人掌。对臭氧胁迫的耐受性从弱到强依次为仙人掌、假明镜和芦荟。植物电生理的测量能在一定程度上反映植物对胁迫的敏感性和耐受性。我们的研究结果表明,可望通过研究植物的电信号响应来筛选监测环境变化的指示生物,还有望用来预测全球污染日益严重的形势下植物群落结构的演替趋势。

Investigated in this paper were the electrophysiological responses of three plant species, Opuntia antiquorum, Aloe arboresesens. Mill, and Aeonium undulatum Webb et Berth, to UV-B radiation and ozone stresses. The responses of plants were different under different stresses. Resistance to UV-B radiation from weak to strong follows the the order of Opuntia antiquorum, Aloe arboresesens. Mill and Aeorium undulatum webb et berth. In the ease of ozone, the resistanee of the plants follows the order of Opuntia antiquorum, Aeorium undulatum webb et berth and Aloe arboresesens Mill. Our findings showed that the eleetrophysiological responses of plants can reflect their resistance to environmental stresses, which is expected to he used to predict the evolution trend of plant communities under the stress of more and more severe global pollution.