English
A New Species (Mariannaea sp. nov.) and an Unrecorded Species of Mariannaea Isolated from Soil of an Abandoned Gold Mine in Korea
Mijung Kim, Yein Kim, Ki Sung Lee, Kidam Park and Seong Hwan Kim*
Department of Microbiology, Dankook University, Cheonan, 31116, Korea
*Email: piceae@dankook.ac.kr
The fungal genus Mariannaea belonging to the family Nectriaceae is generally characterized by the production of adhesive conidia formed on phialides. So far, a total of 29 species has been reported in this genus. Most species of this genus have been reported from terrestrial habitats such as soil, although some have also been recorded from freshwater environments and submerged trees. But the diversity of Mariannaea in specific ecological environments remains insufficiently explored. To explore Mariannaea, we collected soil samples at an abandoned gold mine located in Imgye-ri, Yeongdong-eup, Chungcheongbuk-do, Korea. Two Mariannaea species were isolated from the soil samples. Morphological observations and phylogenetic analyses based on the sequence of ITS, LSU, and beta-tublin gene were conducted to determine their taxonomic placement. The phylogenetic analyses revealed that strain DUCC26601 formed a distinct clade separated from previously described Mariannaea species, indicating that it represents a novel species. Whilet, strain DUCC26602 was identified as Mariannaea lignicola which is previously unrecorded species of Mariannaea. These findings expand the known diversity of the genus Mariannaea and provide new insights into fungal diversity in mine soil environments.
