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. 2008 Feb;46(2):766-71.
doi: 10.1128/JCM.01122-07. Epub 2007 Dec 12.

Molecular and phenotypic data supporting distinct species statuses for Scedosporium apiospermum and Pseudallescheria boydii and the proposed new species Scedosporium dehoogii

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Molecular and phenotypic data supporting distinct species statuses for Scedosporium apiospermum and Pseudallescheria boydii and the proposed new species Scedosporium dehoogii

Fèlix Gilgado et al. J Clin Microbiol. 2008 Feb.

Abstract

Based on the morphological, physiologic, and molecular (beta-tubulin gene) study of 141 isolates of the Pseudallescheria boydii species complex (including several synonyms) and relatives, the new species Scedosporium dehoogii is proposed. Scedosporium apiospermum and P. boydii are considered two different species and the new name Scedosporium boydii is proposed for the anamorph of the latter species. A summary of the key morphological and physiological features for distinguishing the species of Pseudallescheria/Scedosporium is provided.

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Figures

FIG. 1.
FIG. 1.
One of the 18 most-parsimonious trees obtained from heuristic searches based on TUB sequences. Bootstrap support values of 100% are indicated at the nodes. Type strains are indicated with boldface type and with a superscript “T”. Neotype is indicated by boldface type and with a superscript “N”. Strains of S. prolificans were used as outgroups. CI, consistency index; RI, retention index; I, Indiella; P., Pseudallescheria; S., Scedosporium. *, The reference strain of Indiella americana.
FIG. 2.
FIG. 2.
Sedosporium dehoogii (CBS 117406). (A) Colony growing on PDA after 14 days at 25°C. (B) Sessile conidia. (C and D) Conidiogenous cells and conidia.
FIG. 3.
FIG. 3.
Scedosporium apiospermum (CBS 117407). (A) Colony growing on PDA after 14 days at 25°C. (B) Conidiogenous cells and conidia. (C) Sessile conidia.

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