Comparative gametangial morphology of Phytophthora Clade 5 species, with SEM (top) and light microscopy (bottom). P. heveae has smooth walled oogonia with funnel-shaped, amphigynous antheridia. P. agathidicida has mildly stipulate oogonia with globose amphigynous antheridia. P.cocois has mildly bullate oogonia with reflexed amphigynous antheridia. P. castaneae has coarsely bullate oogonium with rugose protuberances and narrow amphigynous antheridia (Weir et al. 2015).
Photo Gallery
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Comparative gametangial morphology of Phytophthora Clade 5 species  |
P. austrocedrae irregular sporangium  P. austrocedrae - irregular sporangium with lateral attachment and swelling in sporangiophore |
P. kernoviae oogonia  Mycol.Res 109, 853-859; Representative oogonia, antheridia and thick walled plerotic oospores of Phytophthora kernoviae. |
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P. pinifolia on Pinus radiata  Pinus radiata stand, note Defoliation and regrowth |
P. agathidicida lesion on kauri tree  Gum oozing out of longitudinal lesion |
P. austrocedrae colony morphology on CMA  Colony morphology of P. austrocedrae at 16ºC after 4 weeks on CMA |
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P. alni oogonia  Smooth-walled oogonium of P. alni (Swedish variant) with oospore and amphigynous antheridium. |
P. nicotianae chlamydospore  Globose chlamydospore (Fitopatol. bras. 2005) |
P. pinifolia hyphal growth  P. pinifolia pathogen growing from infected needle on selective agar |
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P. cambivora colony morphology on PDA  Appressed colony morphology at 14 days at 20°C on PDA |
P. agathidicia sporangia  Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores |
P. megasperma colony morphology on PDA  Colony morphology on PDA at 7 days |