Canadian Medical Guide > Organisms > Algae > Oomycetes Terms and Definitions




Oomycetes

Medical 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.
Guide Notes: GEN or unspecified; prefer specifics; infection: coord IM with INFECTION (IM)
Oomycetes Categories.
Canadian Medical Guide Definition Achlya - A genus of ALGAE in the family Saprolegniaceae. They are pathogens of FISHES and INSECTS.
Canadian Medical Guide Definition Aphanomyces - A genus of ALGAE in the family Saprolegniaceae. It causes root rot in plants and is also a pathogen of FISHES.
Canadian Medical Guide Definition 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.
Canadian Medical Guide Definition Peronospora - A genus of ALGAE in the family Peronosporaceae. Most species are obligatory parasites and many are plant pathogens.
Canadian Medical Guide Definition 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.
Canadian Medical Guide Definition 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.
Canadian Medical Guide Definition Saprolegnia - A genus of ALGAE in the family Saprolegniaceae. It is a parasite and pathogen of freshwater FISHES.

Oomycetes Medical Definitions and Terms

CANADIAN MEDICAL GUIDE

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