Light micrograph of P. agathidicida oospore (Scale bar equals 15 µm)
Photo Gallery
P. agathidicia oogonia |
P. agathidicida lesion on kauri tree Close up of gum oozing out of lower trunk lesions of a young kauri tree at Maungaroa Ridge, Piha region of Waitakere Regional Park |
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. agathidicida sporangium Globose to ovoid-ellipsoid, papillate sporangium |
P. agathidicida lesion on kauri tree Gum oozing out of longitudinal lesion |
P. agathidicia growth on V8 Colony morphology of ex-holotype ICMP 17027 after 10-days incubation at 20°C in the dark |
P. agathidicida oospores in planta Oospores 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 (scale bar =100 µm). |
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 |
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). |
P. agathidicia disease symptoms on kauri Crown decline of mature kauri, with branchlets with little or no leaves |
P. agathidicia sporangia Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores |
P. agathidicia growth on PDA Colony morphology of ex-holotype ICMP 17027 after 10-days incubation at 20°C in the dark |