Refine your search�ソスF     
Report No.

Differences in circadian rhythms of resistance to $$gamma$$-rays and heavy-ion beam in ${it Euglena}$

Bolige, A.*; Sakashita, Tetsuya; Kakizaki, Takehiko*; Funayama, Tomoo; Hamada, Nobuyuki*; Wada, Seiichi*; Kobayashi, Yasuhiko; Goto, Ken*

We report here how these rhythms are related to each other. First, irradiation temperatures influenced neither survival after exposure to UV, $$gamma$$ rays, nor C ions, whereas the incubation at high temperatures (25 $$^{circ}$$C) after irradiation considerably lowered the survival particularly after $$gamma$$ irradiation, but not after UV irradiation at all. Secondly, although the antioxidants $$beta$$ carotene and dimethylsulfoxide (DMSO) increased the survival of the alga at the least resistant phase after UV C and UV B irradiation, respectively, to the level of the most resistant alga, none of these were not so effective for $$gamma$$ or C ion irradiation. Finally, FITC dextran was incorporated into the alga only after C ion irradiation but not $$gamma$$ irradiation, suggesting that C ion may perforate cell membranes to kill the alga.



- Accesses





[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.