Phytophthora has been rebuilt to fix security-related problems and to restore GIS tools. These tools allow users to visualize the geospatial, temporal, and environmental contexts of Phytophthora discoveries. The next phase is to update species information and add data derived from large-scale surveys. If you have suggestions and requests to make the database better, please contact Seogchan Kang (sxk55@psu.edu).
* This species has not yet been formally described and should be treated as such.
Genus wide phylogeny for Phytophthora using four mitochondrial loci (cox2, nad9, rps10 and secY; 2,373 nucleotides). Maximum likelihood branch lengths shown. Numbers on nodes represent bootstrap support values for maximum likelihood (top), maximum parsimony (middle) and Bayesian posterior probabilities as percentages (bottom). Nodes receiving significant support (>95%) in all analysis are marked with an asterisk (*). Scale bar indicates number of substitutions per site.(Martin, Blair and Coffey, unpublished).
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Based on morphological features this taxon has been historically classified as P. capsici, however multilocus phylogenetic analysis with nuclear and mitochondrial loci has identified it as a distinct taxonomic entity in clade 2b basal to P. capsici and P. glovera. Examples thus far identified have been recovered from cacao in Brazil. Isolates of this grouping can be differentiated from P. capsici and P. tropicalis based on isozyme analysis (Machu and Coffey, 1995; Oudemans and Coffey, 1991), AFLP grouping and cox2 sequence analysis (Bowers et al. 2007).
Bowers, J. Bowers, J. H., Martin, F. N., Tooley, P. W., and Luz, E. D. M. N. 2007. Genetic and morphological diversity of temperate and tropical isolates of Phytophthora capsici. Phytopathology 97:492-503.
Machu, G. R. A. and Coffey, M. D. 1995. Evidence for the existence of two subpopulations in Phytophthora capsici and a redescription of the species. Mycol. Res. 99:89-102.
Oudemans, P. and Coffey, M. D. 1991. A revised systematics of twelve papillate Phytophthora species based on isozyme analysis . Mycol. Res. 95:1024-1046.