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).
Photo Gallery
Comparative gametangial morphology of Phytophthora Clade 5 species |
Chlamydospore of P. lateralis Terminal chlamydospore on a short side stalk |
P. austrocedrae necrotic lesion in phloem P. austrocedrae - necrotic lesion in phloem |
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 |
Black pod disease of cacao caused by P. palmivora Black pod of cacao in Ecuador caused by P. palmivora (see lesioned fruit on left). |
P. pluvialis colony morphology on carrot agar Colony morphology on carrot agar at 20 days |
P. cambivora older hyphae Old septate hyphae |
P. kernoviae sporangium Asymmetrical sporangium, photo from Q-bank, used with permission |
P. austrocedrae hyphal swellings in liquid media drawing Morphology of hyphae of Phytophthora austrocedrae, from Greslebin et al. 2007 |
P. frigida chlamydospore Globose chlamydospores of P. frigida |
P. katsurae growth morphology on β-CMA Growth morphology at 7 days on β-CMA |
P. ramorum Dieback and shoot blight on Grand fir Dieback and shoot blight symptoms caused by P. ramorum on Abies grandis |