KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Antioxidants Stimulated by UV-B Radiation in Rice Seedling

  • Sung, Jwa-Kyung (Department of Agronomy, Chungbuk National University) ;
  • Lee, Seung-Hwan (Department of Agronomy, Chungbuk National University) ;
  • Lee, Su-Yeon (Department of Plant Resources Science, Hankyong National University) ;
  • Shim, Myung-Bo (Institute of Ecological Phytochemistry, Hankyong National University) ;
  • Kim, Tae-Wan (Department of Plant Resources Science, Hankyong National University) ;
  • Song, Beom-Heon (Department of Agronomy, Chungbuk National University)
  • Published : 2004.06.01
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Abstract

In order to investigate low molecular antioxidants synthesized by enhanced UV-B radiation, we used the seedlings of two rice varieties. Woonjangbyeo, UV-tolerant, and Hwajoongbyeo, UV-susceptible, were subjected under supplemental UV-B irradiation. When rice seedlings were irradiated with UV light for short period, biosynthesis of total phenolic compound, ascorbate and glutathione were momently reduced. With an increase of UV-B radiation, however, those were slightly synthesized. The content of lipid peroxides in UV-challenged rice leaves was considerably increased after 12 hrs of UV-B treatment. Lipoxygenase activity under supplemental UV-B radiation was differently responded on rice varieties.

Keywords

References

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