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J Genet. 2001 Aug;80(2):55-61.

Evidence for dominant suppression of repeat-induced point mutation (RIP) in crosses with the wild-isolated Neurospora crassa strains Sugartown and Adiopodoume-7.

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Centre for Cellular and Molecular Biology, Hyderabad 500 007, India.


A convenient assay to score repeat-induced point mutation (RIP) in Neurospora employs the erg-3 locus as a mutagenesis target. Using this assay we screened 132 wild-isolated Neurospora crassa strains for ability to dominantly suppress RIP. RIP was exceptionally inefficient in crosses with the wild isolates Sugartown (P0854) and Adiopodoume-7 (P4305), thereby suggesting the presence of dominant RIP suppressors in these strains. In other experiments, we found no evidence for dominant RIP suppression by the Spore killer haplotypes Sk-2 and Sk-3.

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