o·o·spore

(ō′ə-spôr′)

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

o′o·spor′ic (-spôr′ĭk, -spŏr′-) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

oospore

(ˈəʊəˌspɔː)

(Botany) a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi

ˌooˈsporic, ˌooˈsporous adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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Noun

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"

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References in periodicals archive

In stage C, mating of A1 andA2 take place and secreted mating hormones [alpha]2 (from A2) and [alpha]1(from A1) induce the sexual reproduction of the counter mating types A1 and A2, respectively hence production of oospore.

STATUS AND MANAGEMENT OPTIONS OF PHYTOPHTHORA INFESTANS, A CAUSAL AGENT OF THE LATE BLIGHT DISEASE OF TOMATO, IN TROPICAL AFRICA

Light reactions in the control of oospore germination of Chara delicatula.

Response of primary producers to water level fluctuations of Lake Peipsi

An SEM study of developmental variation in oospore wall ornamentation of three Nitella species (Charophyta) in Australia.

Caracteres estructurales y ultraestructurales de la gametogenesis de Chara hydropitys (Charophyceae)

For seven letter words [R.sub.0] has piastre/parties and [R.sub.1] has the fixed points eeriest and oospore. The skip sequence [R.sub.0] for eight letter words yields a large number of fixed points including addendum, announce, assassin and innuendo.

Josephus words

After fertilization of an oogonium, the resulting oospore was retained on the female thallus and underwent a number of cell divisions to produce a multicellular 'fruit'.

Homologous versus antithetic alternation of generations and the origin of sporophytes

1: Micrographs (300x magnification) of (A) sporangia of Phytophthora ramorum, (B) a zoospore exiting a sporangium of Phytophthora bilorbang, (C) chlamydospores of Phytophthora ramorum and (D) an oospore of Phytophthora alni subspecies uniformis.

Soil- and waterborne Phytophthora species linked to recent outbreaks in Northern California restoration sites

In nature, the rhizosphere supplies microorganisms with suitable proliferation conditions with carbon and energy sources in form of root exudates, fragmented cells from old root parts (Cook & Baker, 1983), or the carbon sources provided by synthetic media, are involved in the germination of chlamydospore and oospore of biocontrol agents.

In Vitro Microbial Control of Pathogenic Sclerotium rolfsii

This inoculum preparation protocol resulted in the production of mycelium, sporangia and chlamydospores for all four species, and possibly in the production of oospores for the homothallic (i.e., self-fertile) P.

Three new Phytophthora detection methods, including training dogs to sniff out the pathogen, prove reliable

Morphology of thallus and oospores were studied using sophisticated techniques like scanning electron microscopy to help in species identification.

SQU RESEARCHER COMPILES DATABASE OF AQUATIC PLANTS IN NORTHERN OMAN

Sensitivity to cymoxanil in Italian populations of Plasmopara viticola oospores. Pest Managment Science, New York, v.71, p.1182-1188, 2015.

DISEASES INCIDENCE AND FUNGICIDE COST REDUCTION WITH OVERHEAD COVERED GRAPES/INCIDENCIA DE DOENCAS E REDUCAO DE CUSTOS COM FUNGICIDAS UTILIZANDO COBERTURA PLASTICA EM VIDEIRA