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).
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 Scale bar indicates number of substitutions per site.(Martin, Blair and Coffey, unpublished).
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Phytophthora alticola Maseko, T.A. Cout. & M.J. Wingf. 2007 (Oomycetes, Pythiales)
Distribution: Africa (South Africa).
Substrate: Plant material, soil.
Disease Note: Eucalyptus collar and root rot.
Host: Eucalyptus badjensis, Eucalyptus dunnii, Eucalyptus macarthurii (Myrtaceae).
Supporting Literature:
Maseko, B., Burgess, T. I. , Coutinho, T.A., and Wingfeld, M.J. 2007. Two new Phytophthora species from South African Eucalyptus plantations. Mycol. Res. 111: 1321-1338.
Updated on Mar 10, 2008
MycoBank no.: MB511177
Etym: Latin. The name refers to the fact that this fungus was first reported from high altitude sites.
Phytophthora alticola sp. nov. crescit lente sine ordinatione proprio incrementi; phylogenetice P. arecae persimilis sed homothalla, sporangiis ovoideis papillatis vel bipapillatis, saepe forma distorta, differt.
Typus: Republic of South Africa: Natal Province: Mid-illovo provenance/progeny trials, Richmond Eucalyptus badjensis, Mar. 2002, B.O.Z Maseko, (PREM 59215 — holotypus; dried culture with asexual and sexual structures on CMA with a corresponding microscope slide; ex-type culture CMW 19417; paratypes PREM 59214, PREM 59216, PREM 59217), dried cultures with asexual structures on CMA with matching microscopes slides, ex-paratype cultures CMW 19416, CMW 19424, CMW 19425.)
Primary hyphae (5–)4–6 μm (mean 5 μm) wide. Sporangia papillate, occasionally bipapillate, variable size and shape. Other sporangial shapes include ovoid, globose, obturbinate, limoniform and various distorted shapes. Terminal sporangia, caducous, short pedicel, conspicuous basal plugs. Sporangia (30–)33–36(45–)×(20–)26–29(35–) (mean 36 × 28 μm), length:breadth ratio range, 1:2 and 1:4 (mean 1.4). Exit pores (4–) 5–7 (8–) μm (mean 6 μm) diam. Chlamydospores, rarely produced, terminal and spherical, shape, between 20 and 35 μm (mean 28 μm; Fig 7). Oospores produced in single cultures, with thick inner walls, markedly aplerotic, diameters between 24–36 μm, with a mean of 28.3 × 30.5 μm. Antheridia mainly amphigynous, paragynous antheridia also present.
Maseko B, Burgess TI, Coutinho TA, Wingfield MJ. Two new Phytophthora species from South African Eucalyptus plantations. Mycol Res. 2007 Nov;111(Pt 11):1321-38.