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赵杨迪. 花叶冷水花对镉和铅及其复合处理的生理响应[J]. 四川林业科技, 2013, 34(4): 33-36. DOI: 10.16779/j.cnki.1003-5508.2013.04.010
引用本文: 赵杨迪. 花叶冷水花对镉和铅及其复合处理的生理响应[J]. 四川林业科技, 2013, 34(4): 33-36. DOI: 10.16779/j.cnki.1003-5508.2013.04.010
ZHAO Yang-di. Physiological Responses of Pilea cadierei to Single and Combined Treatment of Cadmium and Lead[J]. Journal of Sichuan Forestry Science and Technology, 2013, 34(4): 33-36. DOI: 10.16779/j.cnki.1003-5508.2013.04.010
Citation: ZHAO Yang-di. Physiological Responses of Pilea cadierei to Single and Combined Treatment of Cadmium and Lead[J]. Journal of Sichuan Forestry Science and Technology, 2013, 34(4): 33-36. DOI: 10.16779/j.cnki.1003-5508.2013.04.010

花叶冷水花对镉和铅及其复合处理的生理响应

Physiological Responses of Pilea cadierei to Single and Combined Treatment of Cadmium and Lead

  • 摘要: 采用盆栽方法研究了土壤外源重金属Cd、Pb及其复合处理对花叶冷水花部分生理指标的影响。结果表明,在Cd、Pb单一处理下,花叶冷水花叶片SOD活性随着重金属处理浓度的增加而上升,而复合处理下,SOD活性逐渐下降。POD活性随Pb单一处理浓度的增加出现先升后降的趋势,表明花叶冷水花对低浓度的Pb有一定的抵抗能力,但在高浓度的Pb处理下则受到伤害;在Cd、Pb复合处理下POD活性逐渐下降,这进一步证实了复合处理对植物的毒害效应大于单一处理。在Cd、Pb单一及其复合处理下,植物叶片Pro含量和MDA含量都随着处理浓度的增大逐步上升,这是植物对重金属胁迫的一种生理适应。

     

    Abstract: A pot experiment was conducted to study the physiological responses of Pilea cadierei Gagnep. et Guill to single cadmium(Cd) or lead(Pb), and their combined treatment. The results showed that the activities of SOD in leaves would increase with the concentration increasing of single Cd and Pb. When P. cadierei was treated with combined Cd and Pb, the activities of SOD would decrease. The activities of POD increased in the use of lower Pb concentration but decreased in the use of higher Pb concentration. It was indicated that Pilea cadierei had definite Pb-tolerance capability in the use of lower Pb concentration but was damaged in the use of higher Pb concentration. In the use of combined treatments of Cd and Pb, the activities of POD would gradually decrease. That further confirmed that the combined treatment had a higher toxcicity than single Cd or Pb treatment. The contents of Pro and MDA all would gradually increase with the concentration increasing of single or combined Cd and Pb, which was a physiological adaptation of plants to heavy metal stress.

     

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