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 Scale bar indicates number of substitutions per site.(Martin, Blair and Coffey, unpublished).
[ Click the tree to enlarge it. ]
This provisional clade 6 species was noted in Brasier et al. (2003). It is homothallic, predominantly paragynous antheridia with oospores approximately 42 µm in diameter. It has an appressed, tightly stellate chrysanthemum colony morphology on carrot agar, moderate growth at 25° C and an upper growth limit of 33° C.
Brasier, C. M., Cooke, D. E. L., Duncan, J. M., and Hansen, E. M. 2003. Multiple new phenotypic taxa from trees and riparian ecosystems in Phytophthora gonapodyides - P. megasperma ITS clade 6, which tend to be high temperature tolerant and either inbreeding or sterile. Mycol. Res. 107: 277-290.