Sequence Complexities of the Nuclear and Mitochondrial Genomes of the Take-all Fungus, Gaeumannomyces graminis var. tritici

The nuclear (n) and mitochondrial (mt) genomes of the take-all fungus, Gaeumannomyces graminis var. tritici, were examined by reassociation kinetics with Escherichia coli DNA as internal standard. Only one kinetic component was detected in each DNA, with second-order rate constants of 0.022 M-1 S-1 for nDNA and 10.9 M-1 S-1 for mtDNA, corresponding to sequence complexities of 29 X 10(6) base pairs and 60 X 10(3) base pairs respectively.