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Oomycetes
| Definition: |
A group of ALGAE, formerly considered FUNGI, whose exact taxonmomic level is unsettled. Many consider Oomycetes (Oomycota) a phylum in the kingdom Stramenopila, or alternatively, as Pseudofungi in the phylum Heterokonta of the kingdom Chromista. They are morphologically similar to fungi but have no close phylogenetic relationship to them. Oomycetes are found in both fresh and salt water as well as in terrestrial environments. (Alexopoulos et al., Introductory Mycology, 4th ed, pp683-4). They produce flagellated, actively motile spores (zoospores) that are pathogenic to many crop plants and FISHES. |
| Notes: |
GEN or unspecified; prefer specifics; infection: coord IM with INFECTION (IM) |
Oomycetes Categories.
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Achlya - A genus of ALGAE in the family Saprolegniaceae. They are pathogens of FISHES and INSECTS. |
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Aphanomyces - A genus of ALGAE in the family Saprolegniaceae. It causes root rot in plants and is also a pathogen of FISHES. |
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Lagenidium - A genus of ALGAE in the family Lagenidiaceae. One species (L. giganteum) parasitizes the larval stage of MOSQUITOES and is used in its biological control (PEST CONTROL, BIOLOGICAL); it also causes disease in freshwater FISHES. |
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Peronospora - A genus of ALGAE in the family Peronosporaceae. Most species are obligatory parasites and many are plant pathogens. |
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Phytophthora - A genus of destructive parasitic algae in the family Pythiaceae, order Peronosporales, affecting numerous fruit, vegetable, and other crops. Differentiation of zoospores usually takes place in the sporangium and no vesicle is formed. |
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Pythium - A genus of destructive root-parasitic algae in the family Pythiaceae, order Peronosporales, commonly found in cultivated soils all over the world. Differentiation of zoospores takes place in a vesicle. |
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Saprolegnia - A genus of ALGAE in the family Saprolegniaceae. It is a parasite and pathogen of freshwater FISHES. |
Oomycetes Definitions and Terms
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