Light micrograph of P. agathidicida oospore (Scale bar equals 15 µm)
Photo Gallery
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P. agathidicia oogonia  |
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 |
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 |
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P. agathidicida sporangium  Globose to ovoid-ellipsoid, papillate sporangium |
P. agathidicia growth on V8  Colony morphology of ex-holotype ICMP 17027 after 10-days incubation at 20°C in the dark |
P. agathidicida lesion on kauri tree  Gum oozing out of longitudinal lesion |
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P. agathidicia disease symptoms on kauri  Crown decline of mature kauri, with branchlets with little or no leaves |
Boot wash to station to control spread of P. agathidicida  Use of hypochlorite solution applied through a “livestock drench-gun”, integrated with a soil grate to allow potentially contaminated soil to be collected |
P. agathadicida disease symptom  Excavated lesion, with outer bark removed showing extent of disease-front |
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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 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). |
P. agathidicida growth on MEA  Diffuse, non-patterned, colony morphology of ICMP 16471 (the original “Gadgil isolate”) after 10-days incubation at 20°C in the dark |