Studies of the spore walls of Agaricus bisporus and Agaricus campestris
| Autor: | C G Mendoza, J A Leal, M Novaes-Ledieu |
|---|---|
| Rok vydání: | 1979 |
| Předmět: |
Agaricus campestris
Immunology Carbohydrates macromolecular substances Applied Microbiology and Biotechnology Microbiology Fungal Proteins Chitosan Melanin chemistry.chemical_compound Species Specificity Chitin Glucosamine Genetics Molecular Biology Melanins biology fungi Pigments Biological General Medicine Spores Fungal biology.organism_classification Lipids Spore carbohydrates (lipids) Biochemistry chemistry Ultrastructure Agaricales Agaricus bisporus |
| Zdroj: | Canadian Journal of Microbiology. 25:32-39 |
| ISSN: | 1480-3275 0008-4166 |
| DOI: | 10.1139/m79-005 |
| Popis: | The composition and ultrastructure of spore walls of Agaricus bisporus and Agaricus campestris were compared by chemical and enzymatic assays and electron microscopy. Polymers of N-acetylglucosamine (chitin) and glucosamine (chitosan) were the major carbohydrate wall components of both species. The chitin to chitosan ratio in the spore walls of A. bisporus was about 0.38, while in A. campestris it was about 2.8. These polymers were associated with proteins, lipids (readily extractable and bound), melanin, and a low content of β-glucan. The quantity of protein, total lipid, melanin, or β-glucan was similar in spore walls of both species. With the electron microscope, the spore walls appeared as two well-defined layers which may correspond to microfibrils of chitin and chitosan in which the electron-dense melanin was located in the external layer. |
| Databáze: | OpenAIRE |
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