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- Ascospore abstract "An ascospore is a spore contained in an ascus or that was produced inside an ascus. This kind of spore is specific to fungi classified as ascomycetes (Ascomycota).Typically, a single ascus will contain eight ascospores. The eight spores are produced by meiosis followed by a mitotic division. Two meiotic divisions turn the original diploid zygote nucleus into four haploid ones. That is, the single original diploid cell from which the whole process begins contains two complete sets of chromosomes. In preparation for meiosis, all the DNA of both sets is duplicated, to make a total of four sets. The nucleus that contains the four sets divides twice, separating into four new nuclei – each of which has one complete set of chromosomes. Following this process, each of the four new nuclei duplicates its DNA and undergoes a division by mitosis.As a result, the ascus will contain four pairs of spores.The Fungi Saccharomyces produces ascospores when grown on V-8 medium, acetate ascospore agar, or Gorodkowa medium. These ascospores are globose and located in asci. Each ascus contains one to four ascospores. The asci do not rupture at maturity. Ascospores are stained with Kinyoun stain and ascospore stain. When stained with Gram stain, ascospores are gram-negative while vegetative cells are gram-positive.The fission yeast Schizosaccharomyces pombe is a single-celled haploid organism that reproduces asexually by mitosis and fission. However, exposure to the DNA damaging agent hydrogen peroxide induces pair-wise mating of haploid cells of opposite mating type to form transient diploid cells that then undergo meiosis to form asci, each with four ascospores. The production of viable ascospores depends on successful recombinational repair during meiosis. When this repair is defective a quality control mechanism prevents germination of damaged ascospores. These findings suggest that mating followed by meiosis is an adaptation for repairing DNA damage in the parental haploid cells in order to allow production of viable progeny ascospores.".
- Ascospore thumbnail Morelasci.jpg?width=300.
- Ascospore wikiPageID "571505".
- Ascospore wikiPageLength "3248".
- Ascospore wikiPageOutDegree "25".
- Ascospore wikiPageRevisionID "668680545".
- Ascospore wikiPageWikiLink Ascomycota.
- Ascospore wikiPageWikiLink Ascus.
- Ascospore wikiPageWikiLink Category:Ascomycota.
- Ascospore wikiPageWikiLink Category:Fungal_morphology_and_anatomy.
- Ascospore wikiPageWikiLink Category:Germ_cells.
- Ascospore wikiPageWikiLink Chromosome.
- Ascospore wikiPageWikiLink DNA.
- Ascospore wikiPageWikiLink File:Morelasci.jpg.
- Ascospore wikiPageWikiLink Fungus.
- Ascospore wikiPageWikiLink Meiosis.
- Ascospore wikiPageWikiLink Mitosis.
- Ascospore wikiPageWikiLink Neurospora_crassa.
- Ascospore wikiPageWikiLink Ploidy.
- Ascospore wikiPageWikiLink Saccharomyces.
- Ascospore wikiPageWikiLink Saccharomyces_cerevisiae.
- Ascospore wikiPageWikiLink Spore.
- Ascospore wikiPageWikiLink Tetrad_(genetics).
- Ascospore wikiPageWikiLink Zygote.
- Ascospore wikiPageWikiLink File:Sordaria_fimicola_ascus_plus_ascospore.jpg.
- Ascospore wikiPageWikiLinkText "Ascospore".
- Ascospore wikiPageWikiLinkText "Spores".
- Ascospore wikiPageWikiLinkText "ascospore".
- Ascospore wikiPageWikiLinkText "spore".
- Ascospore wikiPageWikiLinkText "spores".
- Ascospore wikiPageUsesTemplate Template:Ascomycetes-stub.
- Ascospore wikiPageUsesTemplate Template:Fungus_structure.
- Ascospore wikiPageUsesTemplate Template:Reflist.
- Ascospore wikiPageUsesTemplate Template:Unreferenced.
- Ascospore subject Category:Ascomycota.
- Ascospore subject Category:Fungal_morphology_and_anatomy.
- Ascospore subject Category:Germ_cells.
- Ascospore hypernym Spore.
- Ascospore type Species.
- Ascospore type Cell.
- Ascospore comment "An ascospore is a spore contained in an ascus or that was produced inside an ascus. This kind of spore is specific to fungi classified as ascomycetes (Ascomycota).Typically, a single ascus will contain eight ascospores. The eight spores are produced by meiosis followed by a mitotic division. Two meiotic divisions turn the original diploid zygote nucleus into four haploid ones.".
- Ascospore label "Ascospore".
- Ascospore sameAs Q2445285.
- Ascospore sameAs Ascòspora.
- Ascospore sameAs Askospora.
- Ascospore sameAs Ascospora.
- Ascospore sameAs Askospora.
- Ascospore sameAs Аскоспоралар.
- Ascospore sameAs Ascospore.
- Ascospore sameAs Askospora.
- Ascospore sameAs m.02r7h3.
- Ascospore sameAs Аскоспоры.
- Ascospore sameAs Аскоспора.
- Ascospore sameAs Q2445285.
- Ascospore sameAs 子囊孢子.
- Ascospore wasDerivedFrom Ascospore?oldid=668680545.
- Ascospore depiction Morelasci.jpg.
- Ascospore isPrimaryTopicOf Ascospore.