Growth and Antioxidant Responses of Lettuce Subjected to Combined Pollution of Simulated Acid Rain and Nickel in Red Soil

WANG Hai-hua; PENG Xi-xu; YAN Ming-li; FENG Tao

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Growth and Antioxidant Responses of Lettuce Subjected to Combined Pollution of Simulated Acid Rain and Nickel in Red Soil

更新时间：2024-11-07

- Growth and Antioxidant Responses of Lettuce Subjected to Combined Pollution of Simulated Acid Rain and Nickel in Red Soil
- Vol. 21, Issue 3, Pages: 99-102(2007)
- 作者机构：
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  CLC： Q945X171
- Published：2007
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WANG Hai-hua, PENG Xi-xu, YAN Ming-li, et al. Growth and Antioxidant Responses of Lettuce Subjected to Combined Pollution of Simulated Acid Rain and Nickel in Red Soil[J]. 2007, 21(3): 99-102.
DOI：

WANG Hai-hua, PENG Xi-xu, YAN Ming-li, et al. Growth and Antioxidant Responses of Lettuce Subjected to Combined Pollution of Simulated Acid Rain and Nickel in Red Soil[J]. 2007, 21(3): 99-102. DOI：

摘要

采用盆栽实验

研究了在模拟酸雨、镍单一或复合污染的红壤中

莴笋的生长和叶片中抗氧化酶活性、活性氧和丙二醛含量的变化。结果表明

单一酸雨污染或酸雨与25 mg/kg镍的复合污染对植株生长无明显影响;酸雨增强了50-100 mg/kg镍对莴笋生长的抑制效应。复合污染下

酸雨为pH4.5时

莴笋叶片超氧化物歧化酶（SOD）、过氧化氢酶（CAT）的总体活性较单一镍污染高

而酸雨为pH3.5时则两者活性降低。复合污染下

叶片过氧化物酶（POD）活性升高

抗坏血酸过氧化物酶（APX）活性降低

且随酸雨pH降低

变化的幅度增大;同时

O2^＊ˉ的产生加快

H2O2和MDA含量升高

表明叶片组织遭受了氧化胁迫和膜脂过氧化损伤

这可能是复合污染下莴笋生长受阻的重要原因。

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