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http://dx.doi.org/10.5352/JLS.2006.16.3.522

Effect of UV-B on fatty Acid Composition, Lipid Peroxidation and Polyamine in Kidney Bean(Phaseolus vulgaris L.)  

Kim Hak-Yoon (Department of Environmental Studies, Keimyung University)
Publication Information
Journal of Life Science / v.16, no.3, 2006 , pp. 522-526 More about this Journal
Abstract
To investigate the effects of UV-B on fatty acid composition, lipid peroxidation and biochemical defense responses of plant, kidney bean (Phaseolus vulgaris L.) was subjected to enhanced UV-B irradiation [daily dose : 0.02.(No UV-B) and 11.36 (enhanced UV-B) $kJ\;m^{-2};UV-B_{BE}$] for 3 weeks. UV-B drastically inhibited both height and dry weight of kidney bean. The content of malondialdehyde significantly increased by about 50% after 3 weeks of UV-B irradiation. The ratio of unsaturated to saturated fatty acids of kidney bean was increased by UV-B irradiation. Three major polyamines of kidney bean leaves : putrescine, spermidine and spermine, were observed. All of the polyamine contents were increased with UV-B irradiation. These results suggested that enhanced UV-B radiation caused oxidative stress on lipids and biochemical protection responses might be activated to prevent from damaging effects of oxidative stress generated by UV-B irradiation.
Keywords
Fatty acid; kidney bean; malondialdehyde; polyamines; UV-B;
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