How to use oosphere in a sentence? Find typical usage patterns (collocations)/phrases/context for "oosphere" and check conjugation/comparative form for "oosphere". Mastering all the usages of "oosphere" from sentence examples published by news publications.
The product of the union of an antherozoid and an oosphere is termed an oospore.
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In a common mode of fertilization found in certain species of Thallophytes, the antheridia will bind with the oogonia. The antheridia will then form fertilization tubes connecting the antheridial cytoplasm with each oosphere within the oogonia. A haploid nucleus (gamete) from the antheridium will then be transferred through the fertilization tube into the oosphere, and fuse with the oosphere’s haploid nucleus forming a diploid oospore. The oospore is then ready to germinate and develop into an adult diploid somatic stage.
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In algae, the egg cell is often called oosphere. Drosophila oocytes develop in individual egg chambers that are supported by nurse cells and surrounded by somatic follicle cells. The nurse cells are large polyploid cells that synthesize and transfer RNA, proteins, and organelles to the oocytes. This transfer is followed by the programmed cell death (apoptosis) of the nurse cells.
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Oospores of Hyaloperonospora parasitica, agent of the downy mildew (in the middle) 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. In Oomycetes, oospores can also result from asexual reproduction, by apomixis. These are found in Fungi as the sexual spores; these help in the sexual reproduction of Fungi.
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