Where does plasmogamy take place in basidiomycota?
Problem : In what structures do plasmogamy, karyogamy and spore formation take place in Basidiomycota? Plasmogamy takes place between hyphal cells of the mycelium. Karyogamy and spore formation both take place in the basidium.
Which fungi can participate in plasmogamy?
Types and Phases of Life Cycles
| Type of plasmogamya | Type of sexual spore | |
|---|---|---|
| Zygomycetes | Gametangia fuse | Zygospore |
| Ascomycota | Spermatisation (e.g. Neurospora) | Ascospore |
| Gametangial copulation (e.g. Arachnotis) | ||
| Somatogamy (e.g. Free-living Saccharomyces) |
What do basidiomycota and Ascomycota have in common?
Similarities Between Ascomycota and Basidiomycota Ascomycota and Basidiomycota are two divisions of fungi that produce visible fruit bodies. Both collectively form the subkingdom Dikarya. Also, their formation of spores occurs by karyogamy followed by meiosis.
What is the difference in Ascomycetes and Basidiomycetes?
In basidiomycetes, spores are produced externally attached to basidium whereas, in ascomycetes, spores are produced internally within the ascus. In contrast, ascomycetes can produce both conidia and ascuspores as their spores. • Unlike the basidiomycetes, ascomycetes have single-celled fungal species called yeast.
Where does karyogamy take place in the basidiomycota?
Karyogamy can take place inside basidia as well as in undifferentiated hyphal cells followed by nuclear migration to a newly developed basidium where meiosis takes place. After the formation of the meiotic tetrad, one round of post-meiotic mitosis occurs, resulting in the production of eight nuclei per basidium.
How is karyogamy related to plasmogamy?
The key difference between plasmogamy and karyogamy is that plasmogamy is the fusion of cell membranes and cytoplasm of two cells without the nuclei fusion while karyogamy refers to the fusion of two haploid nuclei to produce a diploid cell.
In which fungi plasmogamy is followed by karyogamy immediately?
Plasmogamy is immediately followed by karyogamy in lower fungi. In higher fungi, karyogamy is delayed for several generations, maintaining the dikaryotic stage of cells.
What happens during Plasmogamy?
Plasmogamy, the fusion of two protoplasts (the contents of the two cells), brings together two compatible haploid nuclei. At this point, two nuclear types are present in the same cell, but the nuclei have not yet fused.
What are the differences and similarities between Ascomycetes and Basidiomycetes?
Similarities :both ascomycetes and basidiomycetes fall in the samr kingdom Fungi. Ascomycetes reproduce both sexually and asexually. Basidiomycetes :known as club fungi, umbrella shaped basidiocarp. Asexual reproduction and Asexual spores are absent.
What happens during plasmogamy?
Where does karyogamy and meiosis take place in basidiomycetes and which type of spores are produced in them?
In the basidiomycetes, sexual spores are more common than asexual spores. The sexual spores form in the club-shaped basidium and are called basidiospores. In the basidium, nuclei of two different mating strains fuse (karyogamy), giving rise to a diploid zygote that then undergoes meiosis.
How is sexual reproduction different from Basidiomycota and Zygomycota?
Sexual reproduction in the Ascomycota differs from that in the Basidiomycota and Zygomycota because Ascomycota have male and female gametangia in their haploid stage. These structures, discussed in Heading , form on the mycelia.
How are the mycelia of a Basidiomycota haploid?
The mycelia of Basidiomycota are haploid. The fruiting body that results from plasmogamy between two mycelia produces binucleate hyphae, but each nucleus is still haploid. In the basidium, nuclei fuse to for a diploid cell, which enters quickly meiosis to become haploid again.
Is the dikaryophase in Ascomycota or Basidiomycota?
The secondary mycelium forms the major portion of the somatic phase. Thus, the Basidiomycota have an extensive and independent dikaryophase. In Ascomycota, the dikaryophase is of short duration, limited to the ascogenous hyphae, which have no independent existence.
Where does plasmogamy take place in a basidium?
Plasmogamy takes place between hyphal cells of the mycelium. Karyogamy and spore formation both take place in the basidium. Problem : How do Basidiomycota reproduce asexually?