Evidence That the Product of the xrs Gene Is Predominantly Involved in the Repair of a Subset of Radiation-Induced Interphase Chromosome Breaks Rejoining with Fast Kinetics

1994 ◽  
Vol 138 (1) ◽  
pp. 34 ◽  
Author(s):  
Ryuichi Okayasu ◽  
George Iliakis
Keyword(s):  
Interphase Chromosome ◽  
Fast Kinetics ◽  
Chromosome Breaks ◽  
Radiation Induced

Different chromosomal distribution patterns of radiation-induced interchange breakpoints in barley: First post-treatment mitosis versus viable offspring

Genome ◽  
2001 ◽  
Vol 44 (1) ◽  
pp. 128-132 ◽  
Author(s):  
G Künzel ◽  
K I Gecheff ◽  
I Schubert
Keyword(s):  
Distribution Patterns ◽  
Gene Density ◽  
Post Treatment ◽  
Recombination Rates ◽  
Chromosomal Distribution ◽  
Chromosome Breaks ◽  
Translocation Breakpoints ◽  
High Gene ◽  
Radiation Induced ◽  
High Gene Density

Translocation breakpoints (TBs) induced by ionizing radiation are nonrandomly distributed along barley chromosomes. When first post-treatment mitoses were evaluated, centromeres and the heterochromatin-containing proximal segments tended to be more than randomly involved, and terminal segments to be less than randomly involved in translocations. Contrary to this, small chromosomal regions in median and distal arm positions, characterized by high recombination rates and high gene density, were identified as preferred sites for the origination of viable translocations, probably due to deviations in chromatin organization. Apparently, the position of a TB has an influence on the rate of viability versus elimination of the carrier cells. Surprisingly, TBs within centromeres and heterochromatin-containing segments seem to be more harmful for survival than those induced in gene-rich regions.Key words: Hordeum vulgare, radiation-induced chromosome breaks, translocation lines, breakpoint distribution.

scholarly journals Proximity within interphase chromosome contributes to the breakpoint distribution in radiation-induced intrachromosomal exchanges

2014 ◽  
Vol 2 ◽  
pp. 23-28
Author(s):  
Ye Zhang ◽  
Jimmy Uhlemeyer ◽  
Megumi Hada ◽  
A. Asaithamby ◽  
David J. Chen ◽  
...  
Keyword(s):  
Interphase Chromosome ◽  
Radiation Induced

scholarly journals The effect of superoxide dismutase and catalase on radiation-induced chromosome breaks

Hereditas ◽  
2009 ◽  
Vol 82 (1) ◽  
pp. 125-126 ◽  
Author(s):  
I. Nordenson ◽  
G. Beckman ◽  
L. Beckman
Keyword(s):  
Superoxide Dismutase ◽  
Chromosome Breaks ◽  
Radiation Induced

Interphase Chromosome Positioning Affects the Spectrum of Radiation-Induced Chromosomal Aberrations

2006 ◽  
Vol 166 (2) ◽  
pp. 319-326 ◽  
Author(s):  
Jan J. W A. Boei ◽  
Janna Fomina ◽  
Firouz Darroudi ◽  
Nico J. D. Nagelkerke ◽  
Leon H. F. Mullenders
Keyword(s):  
Chromosomal Aberrations ◽  
Interphase Chromosome ◽  
Radiation Induced
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