oospore

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oospore
oospore Bot. (ˈəʊəspɔə(r)) [f. Gr. {wlenisisub}ό-ν egg + σπόρος seed, spore.] The fertilized female cell or oosphere, esp. in the lower Cryptogams, which forms the germ of a future plant.1865 Cooke Rust, Smut, etc. 131 After this contact of the two bodies, the gonosphere acquires a new name, and is ... Oxford English Dictionary
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Oospore
An oospore is a thick-walled sexual spore that develops from a fertilized oosphere in some algae, fungi, and oomycetes. They are believed to have evolved either through the fusion of two species or the chemically induced stimulation of mycelia, leading to oospore formation wikipedia.org
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oosperm
oosperm (ˈəʊəspɜːm) [mod. f. Gr. {wlenisisub}ό-ν egg + σπέρµα seed, sperm.] a. Zool. A fertilized ovum. b. Bot. = oospore.1888 Rolleston & Jackson Anim. Life Introd. 25 The ovum has now [after impregnation] become an oosperm, and it speedily undergoes fission or segmentation and gastrulation. 1892 S... Oxford English Dictionary
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Globisporangium sylvaticum
In the case of Globisporangium sylvaticum, the oospore is globose, aplerotic(space between oospore wall and oogonium wall) and thick walled. In adverse environmental conditions, the pathogen exists in a structure called an oospore. wikipedia.org
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Diasporangium
It has a spherical oogonium up to 25 µm in diameter, with an oospore that almost fills the oogonium. wikipedia.org
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gnetaceous
gnetaceous, a. Bot. (niːˈteɪʃəs) [f. mod.L. Gnetace-æ (f. Gnetum, the name of the typical genus) + -ous.] Belonging to, or resembling, the Gnetaceæ, an order of gymnospermous shrubs or small trees, having jointed stems or branches.1886 Vines in Encycl. Brit. XX. 429/2 In the Gnetaceous Ephedra altis... Oxford English Dictionary
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Pythium oligandrum
It has been licensed as a biocontrol agent in the form of an oospore soil treatment, which reduces pathogen load and concomitant plant disease. wikipedia.org
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epibasal
epibasal, a. Bot. (ɛpɪˈbeɪsəl) [f. epi- + basal a.] The distinctive epithet of the upper of the two cells in the oösphere of certain cryptogams. (See quot.)1882 Vines Sachs' Bot. 375 The oospore is first of all clothed with a cell-wall, continues to grow considerably, and is then divided by a horizo... Oxford English Dictionary
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Pythium volutum
Once the oospore is formed, the oospore will either begin to produce zoospores or begin to germinate and directly infect new plants itself. Because of this fact, the initial inoculum can be either considered the oospore itself or the zoospores that emerge from the oospore. wikipedia.org
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Albugo occidentalis
The survival structure is an oospore, which is the result of the karyogamy of two haploid gametes (the oogonium and antheridium). The oospore can overwinter in the soil, and in the spring it produces zoospores which will encyst on the surface of spinach leaves in the presence of water wikipedia.org
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Pythium graminicola
In the sexual state of Pythium graminicola an antheridium and an oogonium combine to make an oospore. An oospore has a thick cell wall and can survive and overwinter either in the soil or on plant debris. wikipedia.org
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Peronospora manshurica
This primarily occurs by the use of oospore encrusted seeds for planting. This oospore will function as a survival structure for the pathogen over the winter, and serve as the primary inoculum the following spring. wikipedia.org
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Pythium dissotocum
After several steps of differentiation and meiosis, an oospore, the primary survival structure, is formed. A sporangium can be produced, which generates a cyst and releases zoospores, or the oospore can create a germ tube which can directly penetrate and infect wikipedia.org
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Pythium irregulare
Oospore germination occurs when the oospore senses chemicals released by seeds or roots. The antheridium then transfers its genetic material to the oogonium (fertilization), resulting in the diploid oospore, which overwinters and starts the wikipedia.org
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Pythium myriotylum
This produces a thick-walled structure called an oospore. Pythium myriotylum has an over-wintering stage through the oospore, also known as, the survival structure. wikipedia.org
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