Mitochondrial DNA Analysis of Aspergillus fumigatus, Aspergillus neoellipticus and Neosartorya fischeri

Abstract

Mitochondrial DNA restriction fragment length polymorphism was analyzed in 15 strains of Aspergillus fumigatus, 19 strains of A. neoellipticus, and 13 strains of Neosartorya fischeri. Their restriction patterns showed there were 3 types of A. fumigatus, 6 types of A. neoellipticus, and 2 types of N. fischeri. The restriction patterns were thus considered useful in the identification of species and discrimination of strains. Phylogenetic trees were prepared for each type based on the estimated values of the rate of base pair substitution in mtDNA. The results suggested that genetically A. fumigatus and A. neoellipticus are separate species, while A. neoellipticus may be anamorph of N. fischeri.