Oomycetes
Oomycetes
Oomycetes (pronounced: oʊˈmaɪsiːts) are a distinct group of fungus-like organisms that include some of the most destructive plant pathogens known, such as the causative agents of late blight of potato and sudden oak death.
Etymology
The term "Oomycetes" is derived from the Greek words "oon" (meaning egg) and "mykes" (meaning fungus), referring to the egg-like structure in their reproductive cycle.
Classification
Oomycetes are part of the Eukaryotic kingdom, specifically within the Stramenopiles phylum. They were traditionally classified as fungi due to their similar lifestyle and the presence of filamentous growth, but molecular studies have revealed them to be more closely related to brown algae and diatoms.
Characteristics
Oomycetes are characterized by their filamentous, coenocytic hyphae, and their unique method of reproduction. They produce large, non-motile oospores that are resistant to harsh environmental conditions. Some species also produce motile zoospores with two unequal flagella, a characteristic feature of the Stramenopiles.
Pathogenicity
Many Oomycetes are notorious plant pathogens, causing diseases such as late blight in potatoes and tomatoes, and sudden oak death. They have a significant impact on agriculture and natural ecosystems, leading to considerable economic losses and ecological damage.
Related Terms
External links
- Medical encyclopedia article on Oomycetes
- Wikipedia's article - Oomycetes
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