Journal
MYCOLOGIA
Volume 111, Issue 2, Pages 299-318Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00275514.2018.1548863
Keywords
Ecuador; oil pollution; Singapore; South America; Southeast Asia; systematics; 7 new taxa
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Funding
- ARES, Academie de Recherche et d'Enseignement Superieur Wallonie-Bruxelles, Commission de la Cooperation pour le Development
- PUCE
- Belgian State-Belgian Federal Science Policy
- FNRS (Belgium) through an FRFC (Fonds de la Recherche Fondamentale Collective) project [2.4515.06]
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Aquanectria and Gliocladiopsis are two closely related genera of Hypocreales. They are also morphologically similar, forming hyaline, penicillate conidiophores and hyaline, straight to sinuous, 0-1-septate phialoconidia. During a revision of gliocladiopsis-like isolates originating from rain forest areas of South America (Ecuador, French Guiana) and Southeast Asia (Singapore), multilocus phylogenetic inferences, based on DNA sequences encoding partial beta-tubulin (TUB2), translation elongation factor 1-alpha (TEF1- alpha), histone H3 (HIS3) genes and the nuc rDNA internal transcribed spacer region (ITS1-5.8S-ITS2 = ITS), revealed the occurrence of seven new phylogenetic species. These phylogenetic species also revealed unique combinations of phenotypes, allowing morphological distinction from their closest phylogenetic relatives. Four new species of Aquanectria and three new species of Gliocladiopsis are described and illustrated. Three of the four Aquanectria species deviate from the other species in the genus by having shorter conidia, which are in the size range observed in Gliocladiopsis species. They are placed in Aquanectria based on the phylogenetic analysis, but this also makes the morphological distinction between these two genera obsolete.
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