Full TGIF Record # 72188
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Web URL(s):https://link.springer.com/article/10.1023/A%3A1026512921026
    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
Publication Type:
i
Refereed
Author(s):Hartikainen, Helinä; Xue, Tailin; Piironen, Vieno
Author Affiliation:Hartikainen and Piironon: Department of Applied Chemistry and Microbiology, University of Helsinki, Finland; Xue: Institute of Geography, Chinese Academy of Science, Beijing, China
Title:Selenium as an anti-oxidant and pro-oxidant in ryegrass
Source:Plant and Soil. Vol. 225, No. 1/2, June 2000, p. 193-200.
# of Pages:8
Publishing Information:Dordrecht, Netherlands: Kluwer Academic Publishers
Keywords:TIC Keywords: Selenium; Lolium perenne; Growth; Lipids; Soil amendments; Stress factors; Stress response; Soil improvement; Application rates; Oxidation; Antioxidants; Superoxide dismutase; Total nonstructural carbohydrate content; Peroxidase; Toxicity; Dry weight
Abstract/Contents:"Selenium is an essential element for antioxidation reactions in human and animals. In order to study its biological role in higher plants, ryegrass (Lolium perenne) was cultivated in a soil without Se or amended with increasing dosages of H2SeO4 (0.1, 1.0, 10.0 and 30.0 mg Se kg -1). Ryegrass was harvested twice and the yields were analyzed for antioxidative systems and growth parameters. Selenium exerted dual effects: At low concentrations it acted as an antioxidant inhibiting lipid peroxidation, whereas at higher concentrations, it was a pro-oxidant, enhancing the accumulation of lipid peroxidation products. The antioxidative effect was associated with an increase in glutathione peroxidase (GSH-Px) activity, but not with the superoxide dismutase (SOD) and α-tocopherol, which was the only tocopherol detected. In the second yield, the diminished lipid peroxidation due to a proper Se addition coincided with promoted plant growth. The oxidative stress found at the Se addition level ≥ 10 mg kg -1 resulted in drastic yield losses. This result indicates that the toxicity of Se can be attributed, in addition to metabolic disturbances, to its pro-oxidative effects. Neither the growth-promoting nor the toxic effect of Se could be explained by the changes in the total chlorophyll concentration."
Language:English
References:44
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hartikainen, H., T. Xue, and V. Piironen. 2000. Selenium as an anti-oxidant and pro-oxidant in ryegrass. Plant Soil. 225(1/2):p. 193-200.
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Web URL(s):
https://link.springer.com/article/10.1023/A%3A1026512921026
    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
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