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A thick-walled zygote developed from a fertilized oosphere, especially in an oomycete.

o′o·spor′ic (-spôr′ĭk, -spŏr′-) adj.


(Botany) a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi
ˌooˈsporic, ˌooˈsporous adj
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.oospore - a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi
spore - a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion; "a sexual spore is formed after the fusion of gametes"
References in periodicals archive ?
Morphology of thallus and oospores were studied using sophisticated techniques like scanning electron microscopy to help in species identification.
An identification key for oospores of the extant charophytas of New Zealand.
The Oospores were mixed with an antheridia suspension then the zygotes were swirled and allowed to settle.
Plerotic oospores with amphygenous antheridia were observed in laboratory crosses (Erwin and Ribeiro, 1996).
We use the term resting propagules to refer to spores such as chlamydospores and oospores that have thick cell walls resistant to desiccation, microbial degradation and temperature extremes, as might be found in compost piles.
infestans withgenetically diverse and aggressive new population comprising of both A1 and A2 strains with the ability to produce oospores through sexual reproduction resulting in more difficult to control strategies implied for late blight management (Drenth et al.
Natural and experimental production of oospores of Bremia lactucae in lettuce in New York.
and de Toni is a soil-, seed- and wind-borne pathogen causing downy mildew in sunflower, which can survive up to 10 years in the soil in the form of oospores (VIRANYI; SPRING, 2011).
Mycelial growth, oospores and sporangia characteristics, size and shape differences in reproductive structures are used based on taxonomic keys of Waterhouse [7] and Stamps et al.
Gallegly ME, Galindo J (1958) Mating types and oospores of Phytophthora infestaos in Mexico.
Cucurbits, solanaceae and legumes are all susceptible to this mold so testing the water source for the oospores that cause Phytophthora is highly recommended as well as not over-irrigating and controlling field drainage so as to not infect a neighboring field.