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  • Title: Enrichment for auxotrophic and heat-sensitive mutants of Neurospora crassa by tritium suicide.
    Author: Russell PJ, Cohen MP.
    Journal: Mutat Res; 1976 Mar; 34(3):359-66. PubMed ID: 131249.
    Abstract:
    Tritium suicide is shown to be an effective technique for mutant enrichment in Neurospora crassa. When mutagenized conidia were labelled to a high specific radioactivity either with a tritiated amino acid mixture or with [5-3H]uridine at a non-permissive temperature and stored at 4 degrees C to accumulate decays, there was a 13-15 fold enrichment for temperature-sensitive mutants relative to the original mutagenized cultures. For a wild type culture of Neurospora crassa labelled with [5-3H]uridine at 35 degrees C the probability of cell killing per tritium decay was calculated to be 3.64 X 10(-5).
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