Diffuse, non-patterned, colony morphology of ICMP 16471 (the original “Gadgil isolate”) after 10-days incubation at 20°C in the dark
Photo Gallery
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P. agathidicida growth on MEA  |
P. agathidicia sporangia  Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores |
P. agathidicida oospores  Oospores of P. agathidicida in the roots of kauri seedlings inoculated with P. agathidicida. The root has been cleared with potassium hydroxide and bleached with peroxide, before being stained with Trypan Blue |
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P. agathidicida sporangium  Globose to ovoid-ellipsoid, papillate sporangium |
P. agathidicida lesion on kauri tree  Advancing triangular lesion extending up the trunk of an 80 cm DBH kauri tree in the Huia Dam Site along Twin Peaks Track, Waitakere Regional Park |
P. agathadicida disease symptom  Excavated lesion, with outer bark removed showing extent of disease-front |
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P. agathidicia oogonia  P. agathidicida oogonia with SEM (top) and light microscopy (bottom) |
P. agathidicia disease symptoms on kauri  Crown decline of mature kauri, with branchlets with little or no leaves |
P. agathidicida lesion on kauri tree  Gum oozing out of longitudinal lesion |
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Comparative gametangial morphology of Phytophthora Clade 5 species  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). |
Mat to control spread of P. agathidicida  Jogger running over a plastic-reinforced, foam-mat containing a 2% solution of Trigene™ Advance (quaternary ammonium compound) as part of a cross-country event, in the Waitakere Regional Park |
P. agathidicia growth on PDA  Colony morphology of ex-holotype ICMP 17027 after 10-days incubation at 20°C in the dark |