Exploring Diversity within <i>Chytridiales</i> and <i>Rhizophydiales</i> (<i>Chytridiomycota</i>) in Korea

<i>Chytridiomycota</i> is the most species-rich phylum of basal lineage fungi with a worldwide distribution. Its species constitute essential components of freshwater ecosystems. However, the diversity of this group in Korea remains understudied. A survey of <i>Chytridiales</i> and <i>Rhizophydiales</i> fungi was conducted in soil and freshwater environments in Korea, and seven strains were isolated. Based on morphological and molecular data, a previously unidentified, novel <i>Rhizophydium</i> species was discovered, designated <i>Rhizophydium multiplex</i> sp. nov. In addition, <i>Chytriomyces hyalinus</i> and <i>Globomyces pollinis-pini</i> were isolated for the first time in Korea. Detailed descriptions and illustrations of the three species are provided. This study highlights the potential diversity of chytrid fungi in Korea.