Fig. 1.

Phylogenetic tree of strains of the genus Aspergillus derived from environment/food in Japan based on β-tubulin nucleotide sequence. The text of each node shows the species, the origin of each strain noted in parentheses, and the strain number, respectively. Sequences were aligned and analyzed using MEGA6. Phylogenetic analysis was performed by neighbor joining method with the maximum composite likelihood model. The stability of clades was assessed with 500 bootstrap replications. Nodal numbers indicate bootstrap probabilities. The branch lengths are proportional to the numbers of nucleotide substitutions. The scale bar shows the number of substitutions per site. The sequences of A. flavus and A. caelatus were used as outgroups.