The phylogenetic position of an Armillaria species from Amami-Oshima, a subtropical island of Japan, based on elongation factor and ITS sequences

An undetermined Armillaria species was collected on Amami-Oshima, a subtropical island of Japan. The phylogenetic position of the Armillaria sp. was determined using sequences of the elongation factor-1 alpha (EF-1 alpha) gene and the internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2) of ribosomal DNA (rDNA). The phylogenetic analyses based on EF-1 alpha and ITS sequences showed that this species differs from known Japanese taxa of Armillaria. The sequences of this species and A. novae-zelandiae from Southeast Asia were contained in a strongly supported clade, which was adjacent to a well-supported sister clade containing A. novae-zelandiae from Australia and New Zealand.