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Digitale Medien

Thermolytical techniques to characterize fungal polysaccharides and bacterial lipopolysaccharides (1991)

Ramos-Sanchez, M. C. ; Rodriguez-Torres, A. ; Leal, J. A. ; [weitere]

s.l. : American Chemical Society

Biotechnology progress 7 (1991), S. 526-533

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ISSN: 1520-6033

Quelle: ACS Legacy Archives

Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1021/bp00012a007

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Digitale Medien

Proteolytic Activity of Growth Media Filtrates from Non-pathogenic Species of Verticillium (1963)

LEAL, J. A. ; ACHA, ISABEL GARCIA ; VILLANUEVA, J. R.

[s.l.] : Nature Publishing Group

Nature 200 (1963), S. 290-291

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Cultures of Verticillium species were obtained from Estacao Agronomica National of Oeiras (Portugal), University College of Swansea, Oregon State University and some were isolated by us. Forty strains of the following species were considered in the survey: Verticillium albo-atrum, V. tricorpus, V. ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/200290b0

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Digitale Medien

Lack of Pectic Enzyme Production by Non-Pathogenic Species of Verticillium (1962)

LEAL, J. A. ; VILLANUEVA, J. R.

[s.l.] : Nature Publishing Group

Nature 195 (1962), S. 1328-1329

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] As a part of the investigations on the lytic activity of a non-pathogenic strain of Verticillium hemileiae on uredospores of various rust2, several species of Verticillium have been tested for ability to produce pectic enzymes in vitro. Pectolytic activity in fungi has generally been found to ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/1951328a0

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Digitale Medien

Composition of the cell wall polysaccharides in some geophilic dermatophytes (1993)

Guarro, J. ; Cano, J. ; Leal, J. A. ; [weitere]

Springer

Mycopathologia 122 (1993), S. 69-77

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ISSN: 1573-0832

Schlagwort(e): α-(1–6)(1–2) mannans ; Chemotaxonomy ; Chitin ; Geophilic dermatophytes ; Glucan ; Wall material

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: 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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01103602

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Digitale Medien

Cell wall polysaccharides from Talaromyces species (1986)

Rupérez, P. ; Moya, A. ; Leal, J. A.

Springer

Archives of microbiology 146 (1986), S. 250-255

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ISSN: 1432-072X

Schlagwort(e): Talaromyces ; Cell wall polysaccharides

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: 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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00403225

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