Photo Gallery

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	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. agathidicia growth on V8 Colony morphology of ex-holotype ICMP 17027 after 10-days incubation at 20°C in the dark
P. agathidicida sporangium Globose to ovoid-ellipsoid, papillate sporangium	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 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 growth on CMA Diffuse, non-patterned, colony morphology of ICMP 16471 (the original “Gadgil isolate”) after 10-days incubation at 20°C in the dark	P. agathidicida lesion on kauri tree Gum oozing out of longitudinal lesion	P. agathadicida disease symptom Excavated lesion, with outer bark removed showing extent of disease-front
P. agathidicia sporangia Differentiation of the cytoplasm within papillate sporangia into acid fuchsin stained zoospores	Tāne Mahuta “Lord of the Forest” kauri tree Tāne Mahuta “Lord of the Forest” is a giant kauri tree (approximately 47 metres in height) in the Waipoua Forest of Northland Region, New Zealand. Its age is unknown but is estimated to be between 1,250 and 2,500 years	P. agathidicia disease symptoms on kauri Crown decline of mature kauri, with branchlets with little or no leaves