Ultrastructure and Cytochemistry of Dormant Basidiospores ofPsilocybe Cubensis
| Autor: | Donald G. Ruch, Jerome J. Motta |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
0106 biological sciences
0301 basic medicine Basidiospore biology Physiology Psilocybe cubensis Endoplasmic reticulum fungi Germ pore Cell Biology General Medicine 030108 mycology & parasitology biology.organism_classification 010603 evolutionary biology 01 natural sciences Cell biology 03 medical and health sciences Cytoplasm Genetics Ultrastructure Cytochemistry Isocitrate lyase activity Molecular Biology Ecology Evolution Behavior and Systematics |
| Zdroj: | Mycologia. 79:387-398 |
| ISSN: | 1557-2536 0027-5514 |
| DOI: | 10.1080/00275514.1987.12025395 |
| Popis: | The ultrastructure of dormant basidiospores of Psilocybe cubensis is described. The spore wall is characterized by three distinct layers and a germ pore. A pore cap is described for the first time in a species of Psilocybe. The protoplast is surrounded by a well defined plasma membrane with many distinct invaginations. Internally, large numbers of nonmembrane-bound lipids occur at both ends of the spore. Two nuclei are typically present and the nuclear envelope has many nuclear pores. Mitochondria with only a few, but well delineated, plate-like cristae are present. There is scant endoplasmic reticulum. Ribosomes occur regularly attached to the ER and outer mitochondrial membrane, as well as being densely packed throughout the cytoplasm. Variously sized vacuoles were demonstrated cytochemically to contain acid phosphatase. Microbody-like organelles are described but cytochemical tests to determine if these organelles are functionally similar to those of higher plants were unsuccessful. Cell-free extracts of basidiospores exhibit catalase and isocitrate lyase activity but no malate synthase |
| Databáze: | OpenAIRE |
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