4.6 Article

Discovery of Novel Backusella (Backusellaceae, Mucorales) Isolated from Invertebrates and Toads in Cheongyang, Korea

Journal

JOURNAL OF FUNGI
Volume 7, Issue 7, Pages -

Publisher

MDPI
DOI: 10.3390/jof7070513

Keywords

3 new taxa; ITS; LSU; Mucoromycota; phylogeny; taxonomy

Funding

  1. Chonnam National University [2017-2827]
  2. Graduate Program for the Undiscovered Taxa of Korea
  3. Project on Survey and Discovery of Indigenous Fungal Species of Korea - National Institute of Biological Resources of the Ministry of Environment (MOE), Korea

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Three novel fungal species and two new records were discovered in Cheongyang, Korea, during an investigation of fungal species from invertebrates and toads. These species were characterized by morphological features and DNA sequence data, with distinct lineages identified through phylogenetic analyses. Detailed descriptions and taxonomic keys to the Backusella species in Korea were provided.
Three novel fungal species, Backusella chlamydospora sp. nov., B. koreana sp. nov., and B. thermophila sp. nov., as well as two new records, B. oblongielliptica and B. oblongispora, were found in Cheongyang, Korea, during an investigation of fungal species from invertebrates and toads. All species are described here using morphological characters and sequence data from internal transcribed spacer sequences of ribosomal DNA and large subunit of the ribosomal DNA. Backusella chlamydospora is different from other Backusella species by producing chlamydospores. Backusella koreana can be distinguished from other Backusella species by producing abundant yeast-like cells. Backusella thermophila is characterized by a variable (subglobose to oblong, applanate to oval, conical and ellipsoidal to pyriform) columellae and grows well at 37 degrees C. Multigene phylogenetic analyses of the combined ITS and LSU rDNA sequences data generated from maximum likelihood and MrBayes analyses indicate that B. chlamydospora, B. koreana, and B. thermophila form distinct lineages in the family Backusellaceae. Detailed descriptions, illustrations, phylogenetic tree, and taxonomic key to the Backusella species present in Korea are provided.

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