Targeted Heavy-Ion Microbeam Irradiation of the Embryo But Not Yolk in the Diapause-Terminated Egg of the Silkworm, Bombyx mori, Induces The Somatic Mutation

Toshiharu FURUSAWA; Kana FUKAMOTO; Tetsuya SAKASHITA; Eiko SUZUKI; Takehiko KAKIZAKI; Nobuyuki HAMADA; Tomoo FUNAYAMA; Hiromi SUZUKI; Noriaki ISHIOKA; Seiichi WADA; Yasuhiko KOBAYASHI; Shunji NAGAOKA

doi:10.1269/jrr.09021

Short Communication

Targeted Heavy-Ion Microbeam Irradiation of the Embryo But Not Yolk in the Diapause-Terminated Egg of the Silkworm, Bombyx mori, Induces The Somatic Mutation

Toshiharu FURUSAWA, Kana FUKAMOTO, Tetsuya SAKASHITA, Eiko SUZUKI, Takehiko KAKIZAKI, Nobuyuki HAMADA, Tomoo FUNAYAMA, Hiromi SUZUKI, Noriaki ISHIOKA, Seiichi WADA, Yasuhiko KOBAYASHI, Shunji NAGAOKA

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Keywords: Bombyx mori, Somatic mutation, Diapause Egg, Heavy-ion microbeam

JOURNAL FREE ACCESS

2009 Volume 50 Issue 4 Pages 371-375

DOI https://doi.org/10.1269/jrr.09021

View "Advance Publication" version (June 20, 2009).

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Abstract

Using heavy-ion microbeam, we report target irradiation of selected compartments within the diapause-terminated egg and its mutational consequences in the silkworm, Bombyx mori. On one hand, carbon-ion exposure of embryo to 0.5-6 Gy increased the somatic mutation frequency, suggesting targeted radiation effects. On the other, such increases were not observed when yolk was targeted, suggesting a lack of nontargeted bystander effect.

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