Plant Protect. Sci., 2025, 61(1):56-65 | DOI: 10.17221/122/2024-PPS

Cytospora tristicha (De Not.) Mlčoch comb. nov., a lesser-known pathogen of wild rosesOriginal Paper

Patrik Mlčoch ORCID...1, Michaela Sedlářová ORCID...1
1 Department of Botany, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic

Stem canker of Rosa pendulina, collected in south-eastern Switzerland (canton of Graubünden) in August 2022, was studied in details. The causal agent of the disease was first identified as Valseutypella tristicha (Valsaceae, Diaporthales, Ascomycota) based on microscopic characteristics. The subsequent molecular analysis classified it into the genus Cytospora and indicated that it is identical with C. rosicola, described from China in 2020 based on the molecular data, however, V. tristicha is an older name than C. rosicola, so this has priority. Thus, a new combination of the name is proposed for this fungus.

Keywords: phylogeny; Rosa spp.; taxonomy; Valsaceae; rose stem canker

Received: July 22, 2024; Revised: October 29, 2024; Accepted: October 30, 2024; Published: January 15, 2025  Show citation

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Mlčoch P, Sedlářová M. Cytospora tristicha (De Not.) Mlčoch comb. nov., a lesser-known pathogen of wild roses. Plant Protect. Sci. 2025;61(1):56-65. doi: 10.17221/122/2024-PPS.
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