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  • Cell wall polysaccharides  (1)
  • Geophilic dermatophytes  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Composition of the cell wall polysaccharides in some geophilic dermatophytes (1993)
    Springer
    Mycopathologia 122 (1993), S. 69-77 
    Details
    ISSN: 1573-0832
    Keywords: α-(1–6)(1–2) mannans ; Chemotaxonomy ; Chitin ; Geophilic dermatophytes ; Glucan ; Wall material
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The main polysaccharide fractions from cell wall material of several geophilic dermatophyte species were characterized as a glucomannan (F1S) which amounted to 4.0–6.5% and a glucan-chitin complex representing 44.2–71.0%. The neutral sugar content of fraction F1S in these species was mannose (38.7–78.2%), galactose (0.3–7.3%) and glucose (3.2–8.2%) except inM. fulvum (21.9%) andE. stockdaleae (12.5%). Small proportions of xylose, about 1%, were found in this fraction except inM. fulvum which reached 7.8% and inM. nanum which lacked xylose. The main products detected after Smith degradation were glycerol and glucose. From fraction F1S ofM. fulvum a glucan (18.3%) and a mannan (41.5%) were obtained. These two polysaccharides could be used as chemotaxonomic characters for the definition of this group of fungi.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01103602
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Cell wall polysaccharides from Talaromyces species (1986)
    Springer
    Archives of microbiology 146 (1986), S. 250-255 
    Details
    ISSN: 1432-072X
    Keywords: Talaromyces ; Cell wall polysaccharides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The neutral sugars and amino sugars, released by acid hydrolysis of walls and polysaccharidic fractions, of six species of Talaromyces and the infrared spectra have been used to study their interspecific relationships. In whole cell walls neutral sugars ranged from 23 to 39.6% dry weight and were identified as glucose, galactose and mannose. Glucosamine varied from 8 to 19.8% in the samples. Galactosamine (2% or less) was found in T. emersonii and T. rotundus and no galactosamine in the other species. Sequential fractionation of the cell walls with alkali and acid gave several polysaccharidic fractions. The main differences among species were found in the alkali-soluble fraction at 20° (F1). This fraction represented 8 to 33.2% of the whole cell wall and was characterized as an α-glucan in T. bacillisporus, T. emersonii, T. luteus and T. rotundus (Group A) and as a β-galactofuranosyl containing glucan in T. ohiensis and T. stipitatus (Group B). The alkali-insoluble residue (F4) represented the bulk of the cell wall in all species tested (33.2% to 57.3%) and was characterized as a β-glucan/chitin complex. The results may indicate degrees of interspecific relationship in the genus Talaromyces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00403225
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    Paper (German National Licenses)
    Fulltext
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