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Effects of UV - B radiation on carotenoids , polyamines and lipid peroxidation in rice ( Oryza sativa L . ) leaves KCI 등재

UV - B가 벼잎의 carotenoid , polyamine 및 脂質過酸化에 미치는 영향

UV - B가 벼잎의 carotenoid , polyamine 및 지질관산화에 미치는 영향

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한국환경과학회지 (Journal of Environmental Science International)
한국환경과학회 (The Korean Environmental Sciences Society)
초록

Rice plants cv. Koshihikari, were subjected to the biologically effective ultraviolet-B (UV-B_BE) radiation {daily dose : 0.0 (control) and 11.5 (enhanced UV-B) kJ m^-2} to investigate the effect of enhanced UV-B radiation on lipid peroxidation and to determine whether carotenoids and polyamines are involved in protection mechanism against enhanced UV-B radiation. Enhanced UV-B radiation significantly depressed plant dry weight. Malondialdehyde (MDA) content in rice leaves was increased by about 30% after 6 days of UV-B irradiation. Total carotenoid contents tended to slightly decrease with the UV-B irradiation, even though there was no significance. In rice leaves, 3 major polyamines, putrescine, spermidine and spermine are observed. All of the polyamine contents were increased with UV-B irradiation. The results suggest that enhanced UV-B radiation caused oxidative stress on lipids and that polyamines may serve as a biochemical protectant against increased UV-B radiation in rice plants.

저자
  • Hak-Yoon KIM(Institute of Agicultural Science and Technology, Kyungpook National University) | 김학윤