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Relationship of Scedosporium prolificans with Petriella confirmed by partial LSU rDNA sequences

Published online by Cambridge University Press:  01 September 1999

J. ISSAKAINEN ,
J. JALAVA ,
J. SAARI  and
C. K. CAMPBELL
J. ISSAKAINEN
Affiliation:
Turku University Central Hospital, Mycology Laboratory, Kiinamyllynkatu 4-8, FIN-20520 Turku, Finland
J. JALAVA
Affiliation:
Turku University, Department of Medical Microbiology, Turku, Finland
J. SAARI
Affiliation:
Turku University, Department of Medical Microbiology, Turku, Finland
C. K. CAMPBELL
Affiliation:
Public Health Laboratory Service, Mycology Reference Laboratory, Bristol, U.K.
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Abstract

Genetic relationships of twenty strains of Scedosporium, Petriella and Pseudallescheria were studied by sequencing a 370 bp part of the gene which encodes the large subunit ribosomal RNA (LSU rDNA). This study confirms and specifies earlier results from the small subunit ribosomal RNA gene (SSU rDNA).

It was confirmed that the pathogenic Scedosporium prolificans is closely related to Petriella, as is Graphium tectonae. Petriella setifera, which includes clinically isolated Scedosporium strains, can be divided into several groups inside the same genus.

The main part of Pseudallescheria is clearly distinguished from Petriella. Pseudallescheria is heterogeneous, however: Ps. africana is referred to Petriella and Ps. fimeti is more closely related to Microascus.

Type
Research Article
Information
Mycological Research , Volume 103 , Issue 9 , September 1999 , pp. 1179 - 1184
Copyright
© The British Mycological Society 1999

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