Phylogenetic study of Trichaptum species based on the RFLP analysis of mitochondrial DNA

Eight strains of Trichaptum (Polyporaceae), two strains from each species of T. abietinum, T. biforme, T. fusco-violaceum, and T. laricinum were examined to see their phylogenetic relationships by digesting mitochondrial DNAs with EcoRV, HinmII, XbaI, and PstI, and then analyzing fragmentation patterns with the methods of Nei and Li, T, abietinum, T, biforme, and T, laricinum developed an independent phylogenetic lineage, respectively, but T, fusco-violaceum FP-133997-sp showed a close relationship with two strains of T, biforme, and T, fusco-violaceum HHB-4016-sp barely grouped with those of T, laricinum, Based on the results of the RFLP analysis of mtDNA, it is concluded that T. fusco-violaceum is under way to differentiation into two different subgroups.