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  • 1
    Electronic Resource
    Electronic Resource
    Distribution of lectins in membranes of soybean and peanut plants (1979)
    Springer
    Planta 145 (1979), S. 193-198 
    Details
    ISSN: 1432-2048
    Keywords: Lectins ; Membranes ; Peanut ; Soybean
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The distribution of lectin activity in soybean and peanut plants has been investigated. In both plants activity is found in all tissues examined (roots, shoots and leaves) at all stages of development from seedling to maturity (7 weeks). The cellular location of the lectins differs between soybean and peanut: in soybean the lectins are generally membrane-associated, whereas in peanut plants lectin activity is present also in the soluble cytoplasmic fraction. The membrane-associated lectins appear to differ from the seed lectins of the respective plants. The function of membrane-associated lectins is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388717
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on growth inhibition by lectins of penicillia and aspergilli (1978)
    Springer
    Archives of microbiology 116 (1978), S. 119-124 
    Details
    ISSN: 1432-072X
    Keywords: Lectins ; Fluorescin-conjugated lectins ; Fungal cell walls ; Inhibition of fungal growth ; Penicillium italicum ; Aspergillus niger ; Aspergillus flavus ; Aspergillus ochraceus ; Stemphylium botryosum ; Role of lectins in plants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract It has previously been shown in our laboratory that wheat germ agglutinin (WGA) binds to Trichoderma viride and inhibits growth of this fungus. Here we report on the effect of WGA, soybean agglutinin (SBA) and peanut agglutinin (PNA) on Penicillia and Aspergilli. Binding of the lectins to the fungi was examined with the aid of their fluorescein isothiocyanate (FITC) conjugated derivatives. FITC-WGA bound to young hyphal walls of all species, in particular to the hyphal tips and septa, in agreement with the chitinous composition of the cell walls of the two genera. Hyphae of all species examined were labelled, though in different patterns, by FITC-SBA and FITC-PNA, suggesting the presence of galactose residues on their surfaces. Young conidiophores, metulae (of the Penicillia), vesicles (of the Aspergilli), sterigmata and young spores, were also labelled. The three lectins inhibited incorporation of [3H]acetate, N-acetyl-D-[3H]glucosamine and D-[14C]galactose into young hyphae of Aspergillus ochraceus, indicating interference with fungal growth. Inhibition of spore germination by the three lectins was also observed. Preincubation of the lectins with their specific saccharide inhibitors prevented binding and the inhibitory effects. We conclude that lectins are useful tools for the study of fungal cell surfaces, and may also serve as an important aid in fungal classification. The present findings also support the suggestion that one role of lectins in plants is protection against fungal pathogens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00406026
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis of methyl α- and β-N-dansyl-d-galactosaminides, probes for the combining sites ofN-acetyl-d-galactosamine-specific lectins (1992)
    Springer
    Glycoconjugate journal 9 (1992), S. 225-227 
    Details
    ISSN: 1573-4986
    Keywords: N-Acetylgalactosamine ; lectins ; dansyl derivatives ; spectrofluorimetry ; association constants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The synthesis of the methyl α- and β-N-dansyl-d-galactosaminides is described using methyl α,β-2-azido-2-deoxy-d-galactopyranoside as starting material. This was reduced to the corresponding methyl α,β-2-amino-2-deoxy-d-galactopyranoside and then treated with dansyl chloride to yield a mixture of methyl α,β-N-dansyl-d-galactosaminides which was separated into individual anomeric forms by flash chromatography on silica gel. Methyl α-N-dansyl-d-galactosaminide was used as a fluorescent indicator ligand in continuous substitution titrations to determine the association constants of nonchromophoric carbohydrates with theN-acetyl-d-galactosamine specific lectin fromErythrina corallodendron.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00731133
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    Paper (German National Licenses)
    Fulltext
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