WebThe antheridium is said to be amphigynous when it encircles the oogonial stalk, a condition brought on by the growth of the oogonial initial through the antheridial initial. Compare with paragynous. antheridium: The male gametangium; a multinucleate, swollen hyphal tip affixed firmly to the basal side of the oogonium. aplerotic: Not filled up. WebAntheridia are mostly paragynous but can be amphigynous (Faris et al., 1989; Hildebrand, 1959). Many antheridia are perpendicular or oblique to the oogonial wall (Gallegly and …
Halophytophthora epistomium. 1. Sporangium with dehiscence …
WebChlamydospores are intercalary to terminal, thin-walled, measuring 10-45 mm (average 26.6 mm), occasionally with a short hyphal projection. P. tentaculata is homothallic, with mostly paragynous antheridia. Antheridia are diclinous and often form tooth-like projections when they encircle the oogonia. WebSporangia semipapillate, sometimes bipapillate; caducous with medium pedicel (8–30 μm) and persistent; ovoid, obpyriform, ellipsoid, sometimes with irregular shapes (mouse … shively louisville ky
The role of paragynous and amphigynous antheridia in sexual ...
WebMay 1, 2010 · The fossil described in this study corresponds well in size and overall morphology with the oogonium–paragynous antheridium complexes seen in many modern peronosporomycetes (e.g., see Dick 2001a). We therefore interpret the specimen as a terminal peronosporomycete oogonium with adpressed paragynous antheridia. However, … One of the most distinguishing characteristics is the production of zoospores produced in sporangia. The anterior flagellum of a zoospore is a tinsel type, while the posterior flagellum is a whiplash type; both … See more Our understanding of the relationships among oomycetes is evolving rapidly as we gather additional information, particularly from … See more Cooke, D. E. L., A. Drenth, J. M. Duncan, G. Wagels, and C. M. Brasier. 2000. A molecular phylogeny of Phytophthoraand related oomycetes. Fungal Genetics and Biology 30:17-32. Fry, … See more Several recent discoveries and important developments have taken the oomycete research community by storm. An important … See more WebThe antheridium is said to be amphigynous when it encircles the oogonial stalk, a condition brought on by the growth of the oogonial initial through the antheridial initial. Compare with paragynous. antheridium: The male gametangium; a multinucleate, swollen hyphal tip affixed firmly to the basal side of the oogonium. aplerotic: Not filled up. shively md