Life Cycle
The life cycle of Cyathus helenae contains both haploid and diploid stages, typical of taxa in the basidiomycetes that can reproduce both asexually (via vegetative spores), or sexually (with meiosis). Basidiospores produced in the peridioles each contain a single haploid nucleus. After dispersal, the spores germinate and grow into homokaryotic hyphae, with a single nucleus in each compartment. When two homokaryotic hyphae of different mating compatibility groups fuse with one another, they form a dikaryotic mycelia in a process called plasmogamy. After a period of time and under the appropriate environmental conditions, fruiting bodies may be formed from the dikaryotic mycelia. These fruiting bodies produce peridioles containing the basidia upon which new basidiospores are made. Young basidia contain a pair of haploid sexually compatible nuclei which fuse, and the resulting diploid fusion nucleus undergoes meiosis to produce haploid basidiospores.
Read more about this topic: Cyathus Helenae
Famous quotes containing the words life and/or cycle:
“Or I shall live your epitaph to make,
Or you survive when I in earth am rotten;
From hence your memory death cannot take,
Although in me each part will be forgotten.
Your name from hence immortal life shall have,
Though I, once gone, to all the world must die:”
—William Shakespeare (1564–1616)
“Oh, life is a glorious cycle of song,
A medley of extemporanea;
And love is a thing that can never go wrong;
And I am Marie of Roumania.”
—Dorothy Parker (1893–1967)