Lead-Induced Oxidative Stress and Defense Responseof Soybean ‘DT84’

Received: 14-01-2015

Accepted: 22-07-2015

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KỸ THUẬT VÀ CÔNG NGHỆ

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Chung, M., & Toan, T. (2024). Lead-Induced Oxidative Stress and Defense Responseof Soybean ‘DT84’. Vietnam Journal of Agricultural Sciences, 13(5), 214. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/214

Lead-Induced Oxidative Stress and Defense Responseof Soybean ‘DT84’

Mai Van Chung (*) 1 , Tran Ngoc Toan 1

  • 1 Khoa Sinh học, Trường đại học Vinh
  • Keywords

    CAT, hydrogen peroxide, lead, oxidative stress, soybean, superoxide, SOD

    Abstract


    Oxidative stress in root of soybean [(Glycine max (L.) Merr.] cv. DT84’ was induced by exposure to Pb2+ ion. The reactive oxygen species (ROS) products such as hydrogen peroxide (H2O2), superoxide anion radical (O2.-) were rapidly produced 6-12 hours after treatment with Pb2+. The enhancement of the ROS was closely dependent upon concentrations of Pb2+. An increase in content of thiobarbituric acid reactive substances (TBARS) - product of membrane lipid peroxidation, and the high percentage of injury (13.89-25.03%) indicated that the cellular damage was resulted from oxidative stress. The induction of superoxide dismutase (SOD) and catalase (CAT) in roots of soybean cv. DT84 as the defense response of soybean via these antioxidative enzymes reduced the concentration H2O2 and O2.- 24 hours following Pb2+ treatment, therefore, contributing to control oxidative stress in soybean roots.

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