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Selenium as an anti-oxidant and pro-oxidant in ryegrass
Hartikainen, H; Xue, TL; Piironen, V
2000
Source PublicationPLANT AND SOIL
Volume225Issue:1-2Pages:193-200
AbstractSelenium 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 superoxide dismutase (SOD) and alpha -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 greater than or equal to 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.
SubtypeArticle
KeywordAnti-oxidant Gsh-px Pro-oxidant Ryegrass Selenium Sod Tocopherol
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedAgriculture ; Plant Sciences
WOS KeywordTHIOREDOXIN REDUCTASE-ACTIVITY ; GLUTATHIONE-PEROXIDASE ; CHLAMYDOMONAS-REINHARDTII ; IODOTHYRONINE DEIODINASE ; HIGHER-PLANTS ; SELENOPROTEIN ; CELLS ; PURIFICATION ; TOXICITY ; TISSUE
Indexed BySCI
Language英语
WOS SubjectAgronomy ; Plant Sciences ; Soil Science
WOS IDWOS:000165788200019
PublisherKLUWER ACADEMIC PUBL
Citation statistics
Cited Times:287[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68288
Collection中国科学院地理科学与资源研究所
Corresponding AuthorHartikainen, H
Affiliation1.Univ Helsinki, Dept Appl Chem & Microbiol, FIN-00014 Helsinki, Finland
2.Chinese Acad Sci, Inst Geog, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Hartikainen, H,Xue, TL,Piironen, V. Selenium as an anti-oxidant and pro-oxidant in ryegrass[J]. PLANT AND SOIL,2000,225(1-2):193-200.
APA Hartikainen, H,Xue, TL,&Piironen, V.(2000).Selenium as an anti-oxidant and pro-oxidant in ryegrass.PLANT AND SOIL,225(1-2),193-200.
MLA Hartikainen, H,et al."Selenium as an anti-oxidant and pro-oxidant in ryegrass".PLANT AND SOIL 225.1-2(2000):193-200.
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