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Journal of Plant Biology

, Volume 48, Issue 2, pp 195–200 | Cite as

Ultrastructural changes of cell organelles inArabidopsis stems after gamma irradation

  • Seung Gon Wi
  • Byung Yeoup ChungEmail author
  • Jin-Hong Kim
  • Myung-Hwa Baek
  • Dae Hwa Yang
  • Ju-Woon Lee
  • Jae-Sung Kim
Article

Abstract

We examined ultrastructural changes of the cell organelles ofArabidopsis stems in response to gamma irradiation. Seedlings treated with 0 to 5 Gy developed normally, while height growth in plants exposed to 50 Gy was significantly inhibited. Based on TEM observations, the chloroplasts were extremely sensitive to such irradiation. In particular, the thylakoids were heavily swollen, some portions of the mitochondria and endoplasmic reticulum were structurally altered, and the plasmalemma had pulled away from the cell wall in places. However, no ultrastructural changes in cell organelles occurred at doses of 0 to 5 Gy.

Keywords

chloroplast gamma irradiation thylakoid transmission electron microscopy ultrastructure 

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Copyright information

© The Botanical Society of Korea 2005

Authors and Affiliations

  • Seung Gon Wi
    • 1
  • Byung Yeoup Chung
    • 1
    Email author
  • Jin-Hong Kim
    • 1
  • Myung-Hwa Baek
    • 1
  • Dae Hwa Yang
    • 1
  • Ju-Woon Lee
    • 1
  • Jae-Sung Kim
    • 1
  1. 1.Division of Radiation Application ResearchKorea Atomic Energy Research InstituteDaejeonKorea

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