Persoonia (2010) 25, 22-31

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K. Bala, G.P. Robideau, N. Désaulniers, A.W.A.M. de Cock and C.A. Lévesque (2010)
Taxonomy, DNA barcoding and phylogeny of three new species of Pythium from Canada
Persoonia 25, 22-31
Abstract: Three new species of Pythium, namely, P. oopapillum, P. emineosum and P. camurandrum are presented in this paper based on morphological descriptions and molecular phylogenetic characterisation. These new species were isolated from various ecological regions in Canada. They have unique morphological features in the genus Pythium, and form distinct clades in maximum parsimony analyses, which are also supported by maximum likelihood phylogeny using general time reversible model (GTR), and Bayesian inference (BI) phylogeny using Markov Chain Monte Carlo (MCMC) analysis methods. A comparative study of the new species with closely related taxa, their clade positions, and morphological features are described in this paper.
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Full text of article
Database assignments for author(s): C. André Lévesque, Arthur W.A.M. De Cock

Research topic(s) for pests/diseases/weeds:
identification/taxonomy


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Pythium oopapillum Wheat (Triticum) Canada (east)
Pythium oopapillum Cucumber (Cucumis sativus) Canada (west)
Pythium oopapillum Tulipa (genus) Canada (east)
Pythium emineosum United Kingdom
Globisporangium emineosum Juniper (Juniperus) Canada (east)
Pythium camurandrum Netherlands
Pythium camurandrum Barley (Hordeum vulgare) Canada (west)