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A basidium usually bears four sexual spores called basidiospores. Occasionally the number may be two or even eight. Occasionally the number may be two or even eight. Each reproductive spore is produced at the tip of a narrow prong or horn called a sterigma ( pl. sterigmata ), and is forcefully expelled at full growth.
The basidiospores are ballistically discharged and start new haploid mycelia called monokaryons. There are no males or females, rather there are compatible thalli with multiple compatibility factors. Plasmogamy between compatible individuals leads to delayed karyogamy leading to establishment of a dikaryon.
Agaricus bisporus basidiospores. A basidiospore is a reproductive spore produced by basidiomycete fungi, a grouping that includes mushrooms, shelf fungi, rusts, and smuts. Basidiospores typically each contain one haploid nucleus that is the product of meiosis, and they are produced by specialized fungal cells called basidia.
All basidiocarps serve as the structure on which the hymenium is produced. Basidia are found on the surface of the hymenium, and the basidia ultimately produce spores. In its simplest form, a basidiocarp consists of an undifferentiated fruiting structure with a hymenium on the surface; such a structure is characteristic of many simple jelly and club fungi.
Under the microscope, the India ink stain is used for easy visualization of the capsule in cerebral spinal fluid. [10] The particles of ink pigment do not enter the capsule that surrounds the spherical yeast cell, resulting in a zone of clearance or "halo" around the cells. This allows for quick and easy identification of C. neoformans.
All have salmon-pink basidiospores which colour the gills at maturity and are angular under a microscope. The genus is large, with almost 2000 species worldwide. Most species are saprotrophic, but some are ectomycorrhizal, and a few are parasitic on other fungi.
Rhodocybe is a genus of fungi in the family Entolomataceae. Basidiocarps (fruit bodies) are agaricoid (gilled mushrooms) producing pink basidiospores that are unevenly roughened or pustular under the microscope.
All have salmon-pink basidiospores which colour the gills at maturity and are angular under a microscope. Recent DNA evidence has shown that at least 12 species belong in Leptonia in temperate Europe and Asia. [1]
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