@article{oai:repo.qst.go.jp:00043166, author = {Sakashita, Tetsuya and Doi, Masahiro and Yasuda, Hiroshi and Takeda, Hiroshi and Fuma, Shoichi and Nakamura, Yuuji and P., Haeder Donat and 坂下 哲哉 and 土居 雅広 and 保田 浩志 and 武田 洋 and 府馬 正一 and 中村 裕二}, issue = {12}, journal = {Journal of Plant Physiology}, month = {}, note = {The effects of Co60 gamma-ray and 290 MeV/amu carbon ion irradiation on negative gravitaxis was studied in the photosynthetic flagellate Euglena gracilis strain Z in a dose-response dependent manner. Cells were exposed to the doses (0-200 Gy for water). The negative gravitaxis was quantified by the r-value observed in a recently developed biomonitoring system. The present results demonstrate the inhibitory effects of gamma-rays and 290 MeV/amu carbon ions on negative gravitaxis of the Euglena gracilis strain Z. The 290 MeV/amu carbon ions had a greater impact at a low dose (<40 Gy) than the Co60 gamma-rays.}, pages = {1355--1360}, title = {Comparative study of gamma-ray and high-energy carbon ion irradiation on negative gravitaxis in Euglena gracilis Z.}, volume = {159}, year = {2002} }