Role of nitrogen in the photoinduction of protoperithecia and carotenoids in Neurospora crassa.
Nitrogen, as KNO3 or NH4NO3, can inhibit the photoinduction of protoperithecia in Neurospora crassa when present in the medium at a high concentration but does not inhibit the photoinduction of carotenoids. The point at which the presence of high nitrogen levels is no longer inhibitory is 5 h after illumination.
Abt. Trautner, Max-Planck-Institut für molekulare Genetik, Ihnestrasse 73, D-1000, Berlin 33, Federal Republic of Germany.
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