[1]AN Yu,SHEN Ying-bai,ZHANG Zhi-xiang.Effects of Damage Stress on Membrane Lipid Peroxidation and Antioxidant Enzymes in Poplar Leaves[J].Research of Soil and Water Conservation,2010,17(05):241-244.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 05
Page number:
241-244
Column:
Public date:
2010-10-20
- Title:
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Effects of Damage Stress on Membrane Lipid Peroxidation and Antioxidant Enzymes in Poplar Leaves
- Author(s):
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AN Yu1, SHEN Ying-bai2, ZHANG Zhi-xiang2
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1. Institute of Desertification Control, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China;
2. College of Biological Science and Biotechnology, Beijing Forestry University, Beijing 100083, China
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- Keywords:
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damage stress; reactive oxygen species; antioxidant enzymes; insect resistance; poplar
- CLC:
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Q946
- DOI:
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- Abstract:
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The concentration of hydrogen peroxide (H2O2) and malondialdehyde (MDA) and the activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) were measured in poplar leaves damaged by mechanical damage and herbivore wounding. The results showed that the concentration of H2O2 and MDA and the activities of SOD, CAT and POD were enhanced; the change of membrane lipid peroxidation and antioxidant enzymes was significantly higher in the herbivore wounding treatment (except CAT). The results suggest that the concentration of H2O2 and MDA were closely related to the change in antioxidant enzymes activities. A high level of antioxidant enzymes could decrease membrane lipid peroxidation levels and effectively induce plant defense responses. Meanwhile, the difference between mechanical damage and herbivore wounding suggest that H2O2, SOD, CAT and POD are associated with insect resistance in poplar.