Cell-wall composition and taxonomy of Cephaloascus fragrans and some Ophiostomataceae
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Abstract
Carbohydrates of intact cells and cell walls were studied by gas-liquid chromatographical analysis after acid hydrolysis. Isolated cellulose was determined by infrared spectrophotometry, pyrolysis mass spectrometry and histochemistry. Biochemical characters do not support an assumed relationship between Ophiostoma (including Europhium) and Cephaloascus fragrans. Cephaloascus fragrans differs from Ophiostoma by a high mannose content and by the absence of cellulose and rhamnose. A relationship between Cephaloascus fragrans and Ceratocystis cannot be excluded on the basis of the biochemical characters, although there is a marked difference in conidiogenesis. Saprolegnia ferax (Oomycetes) was included as a cellulose-containing fungus for comparison.
Keywords
Cellulose Mass Spectrometry Cell Wall Carbohydrate MannosePreview
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