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Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 443326
Title Cercospora: a weedy patch in the garden?
Author(s) Groenewald, J.Z.; Nakashima, C.; Shin, H.D.; Braun, U.; Crous, P.W.
Source In: Book of Abstracts 10th International Congress of Plant Pathology, Beijing, China, 25-30 August 2013. - - p. 542 - 543.
Event 10th International Congress of Plant Pathology: Bio-security, food safety and plant pathology, 25-30 August 2013, Beijing, China, 2013-08-25/2013-08-30
Department(s) Laboratory of Phytopathology
EPS-4
Publication type Abstract in scientific journal or proceedings
Publication year 2013
Abstract The genus Cercospora contains numerous important plant pathogenic fungi from a diverse range of plant hosts. Many Cercospora species are known only from their morphological characters in vivo and not from their morphology in vitro. Cercospora encompasses more than 5 000 names, but very few of these are available in culture and associated DNA sequence data are rarely provided. In our study, we subjected 360 Cercospora strains, obtained from 161 host species, 49 host families and 39 countries, to a molecular phylogeny approach. Partial sequences were derived from five genomic loci, namely the internal transcribed spacer regions and intervening 5.8S nrRNA gene, and partial actin, calmodulin, histone H3 and translation elongation factor 1-alpha genes. The resulting phylogenetic clades were evaluated for application of existing species names and, in addition, five novel species were introduced. In order to stabilize their species circumscription, 11 species were epi-, lecto- or neotypified. Several clades were found for which existing candidate species names were available; however, it was not always possible to apply North American or European names to African or Asian strains and vice versa. We did not identify a single locus to be the ideal DNA barcode gene for the genus, and recommend that species should be identified based on a combination of DNA and morphological characters. In the course of this study, it became evident that several important phytopathogenic Cercospora species require taxonomic revision. Fresh collections are required from the original hosts in the countries of origin, however, to facilitate these studies.
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