 Phylum：Oomycota >> Class： Oomycetes >> Order： Leptomitales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Aphanomyces parasiticus | |||
| Author： |
Aphanomyces parasiticus Coker. The Saprolegniaceae, P. 165. pl. 57, figs. 1-13. 1923. |
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| Description： |
Hyphae 3-7μ in diameter, intramatrical at first, later penetrating the walls of the host filament; hyline; straight and unbranched but becoming swollen and distorted with age. Zoosporangia long, filamentous, unbranched; not different from the vegetative hyphae, isodiametric. Primary zoospore cysts 9-11μ in diameter. Discharge poroid. Secondary zoospores reniform; laterally biflagellate. Oogonia terminal on short, lateral branches; spherical, almost filling the oogonium; contents finely granular with a conspicuous, central oil globule. Antheridial stalk long, unbranched, diclinous in origin. Oospore germinating not observed. | |||
| Specimens： |
Collected one from rice seeding in Taipei. Dec. 20, 1974. |
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| Habitat： |
Soil and water | |||
| Distribution： |
Poland ; Taiwan |
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| References： |
Scott WW. 1961; Seymour and Johnson TW Jr. 1973; Smith RL. 1940. |
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| Provided： |
T. S. Chiou and H. S. Chang |
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| Note： |
This fungus was parasitic on typical from of Achlya americana (Fig. 30) We observed it attacking the mycelium and immature oogonia of the host, not the gemmae or mature reproductive structures. | |||