Abstract
The electron transport systems of 2 species of aquatic fungi, Leptomitus lacteus and Apodachyla punctata, contained cytochrome a-a3 (605 m[mu]), 2 b type cytochromes (564 and 557 m[mu]), c type cytochrome (551 m[mu]), and flavoprotein, but they appeared to lack cytochrome Cj. Reduced-minus-oxidized difference spectra and difference spectra in the presence of antimycin A or cyanide were used to characterize these systems. Studies with the electron micro-scope revealed that hyphae of L. lacteus contained numerous, conspicuous mitochondria with tubular cristae.