Detection, with the dye phloxine B, of yeast mutants unable to utilize nitrogenous substances as the sole nitrogen source.
Yeast mutants unable to degrade certain nitrogen compounds produce characteristic small red colonies on an agar medium containing the red dye phloxine B, galactose, the test nitrogen compound, and a small amount of ammonium chloride.
D001120:Arginine / Q000378:metabolism*; D005452:Fluoresceins; D005796:Genes; D008722:Methods; D009154:Mutation; D012441:Saccharomyces cerevisiae / Q000378:metabolism*
D005452:Fluoresceins; D001120:Arginine