four unsaturated fatty acid auxotrophs designated as ufa1 , ufa2 , ufa3 , and ufa4 have been produced from this organism by treating the conidia of the wild-type strain with a mutagen , n-methyl-n'-nitro-n-nitrosoguanidine , followed by isolation on media containing monounsaturated fatty acids and the nonionic detergent , brij 58 .
C0015690
unsaturated fatty acid
C0015687
monounsaturated fatty acids