Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Differential Expression of C4H and F5H Genes in Rice (Oryza sativa L.) after Gamma-irradiation

  • Park, Young-Mi (Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI)) ;
  • Chae, Hyo-Seok (Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI)) ;
  • Chung, Byung-Yeoup (Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI)) ;
  • Kim, Jae-Sung (Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI)) ;
  • Kim, Jin-Hong (Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI)) ;
  • Wi, Seung-Gon (Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI)) ;
  • An, Byung-Chull (Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI)) ;
  • Cho, Jae-Young (Division of Biological Resources Sciences, Chonbuk National University)
  • Published : 2006.06.01
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Abstract

To reveal effects of gamma-irradiation with various doses on the expressions of C4H and F5H genes, the transcription levels of OsC4HL and OsF5HL were investigated in leaves and stems of two rice cultivars, Ilpoombyeo and IR-29, after the irradiation with 5, 10, 50, or 100 Gy for 4 h. In overall pattern of 24 h after the irradiation, the transcription levels of the two genes increased with the increasing doses of radiation in the leaves of both cultivars, except that of OsC4HL in IR-29. However, in the stems, the transcription level of OsF5HL increased in Ilpoombyeo and decreased in IR-29 dose-dependently, while that of OsC4HL decreased in Ilpoombyeo with the increasing doses of radiation and remained constant in IR-29. When the expressions of OsC4HL and OsF5HL were investigated in a time-course after the irradiation with 100 Gy, they reached their highest levels in the leaves of both cultivars 5 hand 72 h after the irradiation, respectively. Therefore, we suggest that the expressions of OsC4HL and OsF5HL, which involved in the same phenylpropanoid pathway, are differentially regulated during the post-irradiation period, showing different cultivar and tissue specificity. Furthermore, the dose dependency of the gene expressions is also discussed immediately after the irradiation.

Keywords

References

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