LET-dependent effects of heavy-ion beam irradiation in Arabidopsis thaliana
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概要
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We irradiated Arabidopsis thaliana with several kinds of heavy-ion beams to investigate the linear energy transfer (LET)-dependent effects of heavy-ion beam irradiation. First, dry seeds were irradiated with C, N, Ne, Ar, or Fe ions at doses ranging from 5 to 400 Gy to compare the flowering and mutation rates among the ion species. The sensitivity of the flowering and mutation rates to irradiation differed markedly among the ion species. Of the ion species, N (30 keV μm−1) was the most effective at inducing albino plants. Second, we examined the effects of LET on mutation induction. The LET of C, N, Ne, and Ar ion beams was controlled at 30–640 keV μm−1. Regardless of ion species, irradiation with the same LET value resulted in the same flowering rate and mutation rate. Thus, the LET of ion beams seems to be an important factor affecting mutagenesis. We found a 440-bp deletion in the hy (elongated hypocotyl) mutant that was isolated from M2 progeny. These fundamental data on LET-dependence can be used to develop advanced technologies for plant mutagenesis.
- 2008-03-01
著者
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風間 裕介
理化学研究所仁科加速器研究センター生物照射チーム
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SAITO Hiroyuki
Radiation Biology Team, Nishina Accelerator Research Center, RIKEN
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RYUTO Hiromichi
Beam Technology Team, Nishina Accelerator Research Center, RIKEN
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FUKUNISHI Nobuhisa
Beam Technology Team, Nishina Accelerator Research Center, RIKEN
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ABE Tomoko
Radiation Biology Team, Nishina Accelerator Research Center, RIKEN
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KAZAMA Yusuke
Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo
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Abe Tomoko
Radiation Biology Team Nishina Accelerator Research Center Riken
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Abe Tomoko
Riken Saitama Jpn
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Kazama Yusuke
RIKEN Nishina Center
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Saito Hiroyuki
RIKEN Nishina Center
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HAYASHI Yoriko
RIKEN Nishina Center
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RYUTO Hiromichi
RIKEN Nishina Center
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FUKUNISHI Nobuhisa
RIKEN Nishina Center
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ICHIDA Hiroyuki
RIKEN Nishina Center
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HIGUCHI Yohei
Graduate School of Life and Environmental Sciences, University of Tsukuba
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Ryuto Hiromichi
Beam Technology Team Nishina Accelerator Research Center Riken
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Fukunishi Nobuhisa
Beam Technology Team Nishina Accelerator Research Center Riken
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Saito Hiroyuki
Radiation Biology Team Nishina Accelerator Research Center Riken
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Yamamoto Yoshiharu
Center For Gene Research Nagoya University
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Higuchi Youhei
Univ. Tsukuba Ibaraki Jpn
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Abe Tomoko
Riken
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Kazama Yusuke
Department Of Integrated Biosciences Graduate School Of Frontier Sciences University Of Tokyo
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Kazama Yusuke
Univ. Tokyo Chiba Jpn
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Hayashi Yoriko
Riken Saitama Jpn
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Higuchi Youhei
Gene Research Center Graduate School Of Life And Environmental Sciences University Of Tsukuba
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Hayashi Yoriko
Gene Research Center Graduate School Of Life And Environmental Sciences University Of Tsukuba
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Higuchi Youhei
National Inst. Of Floricultural Sci. National Agriculture And Food Res. Organization (naro)
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Saito Hiroyuki
Riken
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風間 裕介
理化学研究所イノベーション推進センター
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Kazama Yusuke
RIKEN Innovation Center
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