P. nicotianae oogonia 100x. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands)
Oogonium and oospore with amphigynous antheridium
Oogonia and oospores with amphigynous antheridia
Oogonia and oospores with amphigynous antheridia
P. agathidicida oogonia with SEM (top) and light microscopy (bottom)
Paragynous antheridium attached to oogonium with oospore
Oospores and oogonia with mostly paragynous but some amphigynous antheridia of P. tentaculata
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).
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).
Light micrograph of P. agathidicida oospore (Scale bar equals 15 µm)
