GMP-stimulation of the cyanide-insensitive mitochondrial respiration in heat-shocked conidia of Neurospora crassa.

In mitochondria of heat-shocked conidia of Neurospora exogenous NADH and succinate were oxidized mainly via the alternative, hydroxamate-sensitive pathway (70%) and only 30% via the cytochromic, cyanide-sensitive pathway which was predominant in untreated conidia; the alternative oxidase pathway was markedly stimulated by guanosine 5'-monophosphate (GMP).