Relation between micornucleus induction and cell division delay in germinated onion seed root tip cells

Kun GU; Zifeng ZENG; Youhei MATSUMOTO; Makoto HONMA; Jun YUAN; Toshihiro TAKATSUJI

doi:10.11513/jrrsabst.2009.0_135_2

The 52nd Annual Meeting of the Japan Radiation Research Society

Session ID : P2-89

DOI https://doi.org/10.11513/jrrsabst.2009.0_135_2

Conference information

Host: The Japan Radiation Research Society, Chairman of the 52nd Annual Meeting, Toshiteru Okubo (Radiation Effects Research Foundation)

Radiation response/signal transduction

Relation between micornucleus induction and cell division delay in germinated onion seed root tip cells

*Kun GU, Zifeng ZENG, Youhei MATSUMOTO, Makoto HONMA, Jun YUAN, Toshihiro TAKATSUJI

Author information

Keywords: micornucleus, heavy ion, dividion delay

CONFERENCE PROCEEDINGS FREE ACCESS

Details

Abstract

Purpose
Micronuclei induced in germinated onion seeds initially increase with radiation dose and next decrease with further amount of radiation dose. The main cause of the decrease seems not cell death but cell division delay because there is no conspicuous effect to the growth.
Method
Radiation sources used were heavy ions accelerated by HIMAC synchrotron at the National Institute of Radiological Sciences, Chiba, Japan and Cs-137 gamma-ray of irradiation system in Center for Frontier Life Sciences, Nagasaki University, Nagasaki, Japan.
Result and Conclusion
Peak time of micronuclei induction become later with increase of radiation dose and LET.

Corresponding author

Register with J-STAGE for free!