Five islands (Sinjindo, Mado, Daenanjido, Wonsando, and Sapsido) and the coastal area (Muchangpo) in Chungnam,
Korea, were selected to determine the diversity of arbuscular mycorrhizal (AM) fungi. Soil-inhabiting AM fungi were isolated and
identified on the basis of morphological characteristics and sequence analyses of 18s rDNA. The differences in the fungal community
structures were compared among sites. As a result, 24 species of AM fungi were identified, of which two species of AM fungi,
and , were isolated for the first time in Korea. This study revealed that AM fungal spore
abundance was low and the genus was dominant in most of the islands. AM fungal community structures in five
Islands were highly similar. However, the coastal area, Muchangpo, had different AM fungal community structure from the islands.