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


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.

SUBMITTER: Sandoval-Denis M 

PROVIDER: S-EPMC4042759 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature

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

Sandoval-Denis Marcelo M   Sutton Deanna A DA   Cano-Lira José F JF   Gené Josepa J   Fothergill Annette W AW   Wiederhold Nathan P NP   Guarro Josep J  

Journal of clinical microbiology 20140409 6


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 ci  ...[more]

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