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首页> 外文会议>International conference on environmental biotechnology and materials engineering;EBME 2011 >Effect of Soil Pb Pollution on Physiological-biochemical Characteristics of Young Tilia amurensis Rupr.
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Effect of Soil Pb Pollution on Physiological-biochemical Characteristics of Young Tilia amurensis Rupr.

机译：土壤铅污染对紫T幼树生理生化特性的影响

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Three-year old Tilia amerensis Rupr. was taken as study subject in a pot experiment. Chlorophyll content, REC, peroxidase activity, SOD activity, and other indices of Tilia amerensis Rupr. leaves were assayed. The experimental results show that Pb contaminated and destroyed the chloroplast structure of Tilia amerensis Rupr. leaves and impeded the synthesis of chlorophyll in the leaves. When Pb concentration was 10 mgkg-1-100 mg·kg-1, REC of the Tilia extract was roughly equal to that of the control group, and Tilia amerensis Rupr. leaves were contaminated by Pb to a small degree. When Pb concentration reached a higher level, REC increased rapidly and Tilia amerensis Rupr. leaves were contaminated substantially. Low Pb concentration may lower the POD activity of the leaves. However, when Pb concentration was high, the POD activity elevated and Tilia amerensis Rupr. could exhibit various reactions to instinctively defend itself. The SOD activity of the Pbcontaminated Tilia amerensis Rupr. was slightly higher than that of the control group, and the ROS content remained low. The SOD enzyme system was undamaged.
机译：三岁的非洲紫Ru（Tilia amerensis Rupr）。在盆栽实验中被当作研究对象。紫T的叶绿素含量，REC，过氧化物酶活性，SOD活性及其他指标。测定叶子。实验结果表明，Pb污染并破坏了紫T的叶绿体结构。叶片并阻止叶片中叶绿素的合成。当铅的浓度为10 mgkg-1-100 mg·kg-1时，紫ilia提取物的REC与对照组和紫T的REC大致相等。叶片被铅污染的程度很小。当铅的浓度达到较高水平时，REC迅速增加，紫Ru（Tilia amerensis Rupr）迅速增加。叶子被严重污染。低的Pb浓度可能会降低叶片的POD活性。但是，当铅浓度高时，POD活性升高，紫T（Tilia amerensis Rupr）升高。会表现出各种本能地捍卫自己的反应。受到Pb污染的紫T（Tilia amerensis Rupr）的SOD活性。较对照组略高，但ROS含量仍较低。 SOD酶系统未受损。

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