Phylogeny of the clinically relevant species of the emerging fungus trichoderma and their antifungal susceptibilities

Marcelo Sandoval-Denis, Deanna A. Sutton, José F. Cano-Lira, Josepa Gené, Annette W. Fothergill, N. P. Wiederhold, Josep Guarro

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

A set of 73 isolates of the emerging fungus Trichoderma isolated from human and animal clinical specimens were characterized morphologically and molecularly using a multilocus sequence analysis that included the internal transcribed spacer (ITS) regions of the nuclear ribosomal DNA and fragments of the translation elongation factor 1 alpha (Tef1), endochitinase CHI18-5 (Chi18-5), and actin 1 (Act1) genes. The most frequent species was Trichoderma longibrachiatum (26%), followed by Trichoderma citrinoviride (18%), the Hypocrea lixii/Trichoderma harzianum species complex (15%), the newly described species Trichoderma bissettii (12%), and Trichoderma orientale (11%). The most common anatomical sites of isolation in human clinical specimens were the respiratory tract (40%), followed by deep tissue (30%) and superficial tissues (26%), while all the animal-associated isolates were obtained from superficial tissue samples. Susceptibilities of the isolates to eight antifungal drugs in vitro showed mostly high MICs, except for voriconazole and the echinocandins.

Original languageEnglish (US)
Pages (from-to)2112-2125
Number of pages14
JournalJournal of clinical microbiology
Volume52
Issue number6
DOIs
StatePublished - Jun 2014

ASJC Scopus subject areas

  • Microbiology (medical)

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