Mycobiology

The Korean Society of Mycology (한국균학회)
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Unique Phylogenetic Lineage Found in the Fusarium-like Clade after Re-examining BCCM/IHEM Fungal Culture Collection Material

  • Triest, David (BCCM/IHEM Collection of Biomedical Fungi, Service of Mycology & Aerobiology, Scientific Institute of Public Health) ;
  • De Cremer, Koen (Service of Health & Environment, Scientific Institute of Public Health) ;
  • Pierard, Denis (Department of Microbiology & Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel) ;
  • Hendrickx, Marijke (BCCM/IHEM Collection of Biomedical Fungi, Service of Mycology & Aerobiology, Scientific Institute of Public Health)
  • Received : 2016.03.29
  • Accepted : 2016.07.12
  • Published : 2016.09.30
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Abstract

Recently, the Fusarium genus has been narrowed based upon phylogenetic analyses and a Fusarium-like clade was adopted. The few species of the Fusarium-like clade were moved to new, re-installed or existing genera or provisionally retained as "Fusarium." Only a limited number of reference strains and DNA marker sequences are available for this clade and not much is known about its actual species diversity. Here, we report six strains, preserved by the Belgian fungal culture collection BCCM/IHEM as a Fusarium species, that belong to the Fusarium-like clade. They showed a slow growth and produced pionnotes, typical morphological characteristics of many Fusarium-like species. Multilocus sequencing with comparative sequence analyses in GenBank and phylogenetic analyses, using reference sequences of type material, confirmed that they were indeed member of the Fusarium-like clade. One strain was identified as "Fusarium" ciliatum whereas another strain was identified as Fusicolla merismoides. The four remaining strains were shown to represent a unique phylogenetic lineage in the Fusarium-like clade and were also found morphologically distinct from other members of the Fusarium-like clade. Based upon phylogenetic considerations, a new genus, Pseudofusicolla gen. nov., and a new species, Pseudofusicolla belgica sp. nov., were installed for this lineage. A formal description is provided in this study. Additional sampling will be required to gather isolates other than the historical strains presented in the present study as well as to further reveal the actual species diversity in the Fusarium-like clade.

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References

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