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Kretzschmaria quercicola sp. nov., an Undescribed Fungus from Living Oak in Mt. Daeryong, Korea

  • Yun, Ji Ho (Tree Pathology and Mycology Laboratory, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Jo, Jong Won (Tree Pathology and Mycology Laboratory, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Lee, Jin Heung (Tree Pathology and Mycology Laboratory, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Han, Sang Kuk (Forest Biodiversity Division, Korea National Arboretum) ;
  • Kim, Dae Ho (Tree Pathology and Mycology Laboratory, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Lee, Jong Kyu (Tree Pathology and Mycology Laboratory, College of Forest and Environmental Sciences, Kangwon National University)
  • Received : 2016.06.01
  • Accepted : 2016.06.13
  • Published : 2016.06.30

Abstract

We encountered an unfamiliar ascomycete fruiting body, fitting characteristics of the genus Kretzschmaria, which features in a stipitate ascigerous stroma with carbonaceous interior and disintegrating perithecia. In this study, we report and characterize a new species of the decaying fungus. Compared to other species, one of the notable features of this specimen (TPML150908-046) is its stromatal size (up to 15 cm). Although TPML150908-046 is morphologically similar to K. milleri and K. sandvicensis, it differs sharply from both species in apical ring size (TPML150908-046, $6.5{\sim}10.5{\mu}m$; K. milleri, $11{\sim}16{\mu}m$) and ascospore width (TPML150908-046, $10.5{\sim}17{\mu}m$; K. sandvicensis, $8.5~11.5{\mu}m$). Phylogenetic trees based on ${\beta}$-tubulin, ITS, and RPB2 sequences showed that our collection clustered with K. sandvicensis, with the respective similarities for these sequences being 95.6%, 91.3%, and 97.7%, signifying it as another species. With these results, we report it as a new species, which we call Kretzschmaria quercicola sp. nov.

Keywords

References

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