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Different evolutionary histories of two Phragmidium species infecting the same dog rose hosts

Published online by Cambridge University Press:  24 May 2005

Christiane M. RITZ ,
Wolfgang F. A. MAIER ,
Franz OBERWINKLER  and
Volker WISSEMANN
Christiane M. RITZ
Affiliation:
Friedrich-Schiller-Universität Jena, Institut für Spezielle Botanik, Philosophenweg 16, D-07743 Jena, Germany. E-mail: christiane.ritz@uni-jena.de
Wolfgang F. A. MAIER
Affiliation:
Eberhard-Karls-Universität Tübingen, Lehrstuhl für Spezielle Botanik und Mykologie, Auf der Morgenstelle 1, D-72076 Tübingen, Germany. Present address: Department of Genetics, FABI, University of Pretoria, Pretoria 0002, South Africa.
Franz OBERWINKLER
Affiliation:
Eberhard-Karls-Universität Tübingen, Lehrstuhl für Spezielle Botanik und Mykologie, Auf der Morgenstelle 1, D-72076 Tübingen, Germany.
Volker WISSEMANN
Affiliation:
Friedrich-Schiller-Universität Jena, Institut für Spezielle Botanik, Philosophenweg 16, D-07743 Jena, Germany. E-mail: christiane.ritz@uni-jena.de
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Abstract

Rust fungi in the genus Phragmidium are frequent pathogens of both wild and cultivated roses. We investigated the occurrence and relationships of rusts on dog roses, Rosa sect. Caninae (Rosa canina, R. corymbifera and R. rubiginosa) in Germany. Two Phragmidium species, P. mucronatum and P. tuberculatum, were able to infect each of the three dog rose species examined. However, the overall infection of R. rubiginosa was significantly lower, which could be important for rose breeding. Despite overlapping host ranges, the evolutionary background of P. tuberculatum and P. mucronatum is quite distinct. Phylogenetic analyses of the D1/D2 region of the LSU rDNA suggest that P. mucronatum shares a common ancestor with other rose rusts, whereas P. tuberculatum evolved from a Rubus-Sanguisorba rust clade and must have undergone a host shift to Rosa spp.

Type
Research Article
Information
Mycological Research , Volume 109 , Issue 5 , May 2005 , pp. 603 - 609
Copyright
© The British Mycological Society 2005

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