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A zygospore is a diploid reproductive stage in the life cycle of many fungi and protists.Zygospores are created by the nuclear fusion of haploid cells. In fungi, zygospores are formed in zygosporangia after the fusion of specialized budding structures, from mycelia of the same (in homothallic fungi) or different mating types (in heterothallic fungi), and may be chlamydospores. [1]
Zygomycota. Zygomycota, or zygote fungi, is a former division or phylum of the kingdom Fungi. The members are now part of two phyla: the Mucoromycota and Zoopagomycota. [1] Approximately 1060 species are known. [2] They are mostly terrestrial in habitat, living in soil or on decaying plant or animal material.
The inner circuit illustrates the fully haploid "apogamic" life cycle. Both cycles exhibit all developmental stages. Physarum polycephalum, an acellular [ 1 ] slime mold or myxomycete popularly known as "the blob", [ 2 ] is a protist with diverse cellular forms and broad geographic distribution. The “acellular” moniker derives from the ...
Mating in fungi. Fungi are a diverse group of organisms that employ a huge variety of reproductive strategies, ranging from fully asexual to almost exclusively sexual species. [1] Most species can reproduce both sexually and asexually, alternating between haploid and diploid forms. This contrasts with most multicellular eukaryotes such as ...
Ascus. There are 8 ascospores in each ascus of Sordaria fimicola. An ascus (from Ancient Greek ἀσκός (askós) 'skin bag, wineskin'; pl.: asci) [1] is the sexual spore -bearing cell produced in ascomycete fungi. Each ascus usually contains eight ascospores (or octad), produced by meiosis followed, in most species, by a mitotic cell division.
After formation of the ascus-initial cell, the A and a nucleus fuse with each other to form a diploid nucleus (see Figure). This nucleus is the only diploid nucleus in the entire life cycle of N. crassa. The diploid nucleus has 14 chromosomes formed from the two fused haploid nuclei that had 7 chromosomes each.
Basidiomycota (/ bəˌsɪdi.oʊmaɪˈkoʊtə /) [2] is one of two large divisions that, together with the Ascomycota, constitute the subkingdom Dikarya (often referred to as the " higher fungi ") within the kingdom Fungi. Members are known as basidiomycetes. [3] More specifically, Basidiomycota includes these groups: agarics, puffballs ...
diplontic life cycle — the diploid stage is multicellular and haploid gametes are formed, meiosis is "gametic". haplodiplontic life cycle (also referred to as diplohaplontic, diplobiontic, or dibiontic life cycle) — multicellular diploid and haploid stages occur, meiosis is "sporic". The cycles differ in when mitosis (growth) occurs.