Journal of Experimental Botany, Vol. 54, No. 383, pp. 669-680,
February 1, 2003
© 2003 Oxford University Press
Arabidopsis mutants sensitive to gamma radiation include the homologue of the human repair gene ERCC1
Received 16 July 2002; Accepted 2 October 2002
1 Department of Plant Biology, University of California, Davis, Davis, CA 95616, USA
2 Genetics Graduate Group, Department of Plant Biology, University of California, Davis, Davis, CA 95616, USA
3 To whom correspondence should be addressed. E-mail: abbritt{at}ucdavis.edu
Mutants sensitive to ionizing radiation in yeast and mammals include an assortment of DNA repair genes. The majority of these DNA repair genes are involved in the repair of DNA double-strand breaks. In this study a forward genetic screen is used to identify
-sensitive mutants of Arabidopsis thaliana. The
-plantlet screen used here also reveals two general mutant classes based on size of cotyledons and hypocotyls. One of the mutants discovered is a homologue of the mammalian nucleotide excision repair gene ERCC1.
Key words: Arabidopsis, DNA repair, double-strand breaks, ERCC1, ionizing radiation sensitive, Rad10, UV.
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