Oomycota


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Related to Oomycota: Myxomycota, Zygomycota, Acrasiomycota

Oomycota (oomycetes)

aquatic and terrestrial FUNGUS-like ORGANISMS, traditionally classified with the fungi, and according to some authorities, placed in the MASTIGOMYCOTINA. However, unlike most fungi, many oomycetes have a CELL WALL that appears to contain not CHITIN but CELLULOSE, and they typically produce motile ZOOSPORES, with two equal FLAGELLA, in ASEXUAL REPRODUCTION. Furthermore, SEXUAL REPRODUCTION is oogamous (see OOGAMY). Oomycetes may be PARASITES or SAPROBIONTS, and include water moulds and some important PATHOGENS of plants, such as Phytophthora infestans, which causes potato blight. This organism was responsible for the Irish potato famine in the 19th century.
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To date, 434 taxa have been recorded for both countries, being 174 (14 Blastocladiomycota, 42 Chytridiomycota, two Hyphochytriomycota, three Labyrinthulomycota, 112 Oomycota and one Phytomyxea) for Argentina and 348 (18 Blastocladiomycota, 121 Chytridiomycota, five Hyphochytriomycota, four Labyrinthulomycota, 196 Oomycota and four Phytomyxea) for Brazil.
Taxonomical studies of the Phylum Oomycota in Brazil are numerous, in particular, those referring to the orders Saprolegniales and Rhipidiales (e.
Considering that the estimated percentage of known species of Chytridiomycota and Oomycota is quite small (Mueller & Schmit, 2007), human activities and environmental change may lead to species losses before they have even been discovered.
Diversidade de Oomycota da Reserva Biologica de Paranapiacaba, Santo Andre, SP: primeiras citacoes para o Brasil.
Oomycota (Straminipila) da Reserva Biologica de Paranapiacaba, Santo Andre, SP, Brasil.