Ultrastructural Changes of Cell Organelles in Arabidopsis Stems after Gamma Irradation

We examined ultrastructural changes of the cell organelles of Arabidopsis 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 extremel...

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Bibliographic Details
Published in:Journal of plant biology = Singmul Hakhoe chi 2005, 48(2), , pp.195-200
Main Authors: Seung Gon Wi, Byung Yeoup Chung, Jin Hong Kim, Myung Hwa Baek, Dae Hwa Yang, Ju Woon Lee, Jae Sung Kim
Format: Article
Language:Korean
Subjects:
chloroplast
gamma irradiation
thylakoid
transmission electron microscopy
ultrastructure
생물학
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Summary:We examined ultrastructural changes of the cell organelles of Arabidopsis 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.
ISSN:1226-9239
1867-0725