RESTRICTION ENZYME FRAGMENT PATTERNS OF MTDNA FROM A GALACTOSE OXIDASE-PRODUCING MOLD

1. Mitochondrial DNAs from Dactylium dendroides, Hypomyces rosellus, F usarium graminearum, Gibberella fujikuroi, Fusarium tricinctum strains and a galactose oxidase (GAO)-producing mold (original strain) presen ted distinctive restriction enzyme fragment patterns with the endonucl eases Hind III and EcoRI. 2. A small number of comigrating bands was f ound when the GAO-producing mold was compared with the others. The mol ecular size of mtDNA from the GAO-producing mold, as judged by summati on of fragment sizes produced by digestion with EcoRI, Hind III and Bg l II, is 61.3 +/- 2.16 kb. 3.The results suggest that the mtDNA from t he GAO-producing mold strain is distinct from that of D. dendroides an d all other ascomycetes analyzed.