Maximum likelihood tree based on ITS sequences showing the relationship of isolates included in this study and different Ganoderma species. GenBank accession numbers are shown next to the species names. Bootstrap values (≥ 60%) from neighbour-joining and maximum likelihood analyses are shown at the nodes. Posterior probability values are indicated with circles at the nodes (green ≥ 0.95, blue ≥ 0.90). Scale bar indicates the number of nucleotide substitutions per site.