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  • taxonomy  (2)
  • 1,3-Dioxane derivatives of o-phthaldialdehyde  (1)
  • Acridinone  (1)
  • Candida albicans  (1)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of 3,4-dihydro-3,3-dimethyl-1(2H)-acridinone (1995)
    Springer
    Journal of chemical crystallography 25 (1995), S. 201-203 
    Details
    ISSN: 1572-8854
    Keywords: Acridinone ; alzheimer ; dimedone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The acridinone derivative 3,4-dihydro-3,3-dimethyl-1(2H)-acridinone (4) has been prepared in a two step fashion and the molecular structure confirmed by X-ray diffraction. Compound4 crystallizes in the space group P2l/n witha=6.022(2),b=21.111(2),c=9.604(2) Å, β=99.97(2)°, andZ=4. The single crystal analysis showed the acridinone tricyclic ring is virtually planar except in the gem-dimethyl position of C(3) which presented a half-chair conformation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01666107
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  • 2
    Electronic Resource
    Electronic Resource
    Cross-mating tests re-discovered: a tool to assess species boundaries in rotifers (1998)
    Springer
    Hydrobiologia 287-388 (1998), S. 109-115 
    Details
    ISSN: 1573-5117
    Keywords: behavior ; mating ; evolution ; taxonomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The recent isolation of a mate recognition pheromone in the marine rotifer Brachionus plicatilis Müller has shed new light on the mate recognition system of rotifers. One result is improved understanding of the importance of mating behavior as a highly efficient process used by rotifers to choose conspecifics. There are many differences in the main characteristics of mating behavior in members of five different families of rotifers. The present work describes the use of these characteristics to assess species boundaries, especially where boundaries between two or more species are unclear. The method proposed here can assess quantitatively the response of males of one species to females of a questionable taxon by measuring the percentage of matings initiated and the number of completed copulations. The data generated can then be used together with molecular, morphological, and other data to determine the species boundaries. This approach can help distinguish between morphological differences resulting from evolutionary divergence of species and morphological differences induced by environmental or ecological factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017005602735
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  • 3
    Electronic Resource
    Electronic Resource
    Cross-mating tests re-discovered: a tool to assess species boundaries in rotifers (1998)
    Springer
    Hydrobiologia 387-388 (1998), S. 109-115 
    Details
    ISSN: 1573-5117
    Keywords: behavior ; mating ; evolution ; taxonomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The recent isolation of a mate recognition pheromone in the marine rotifer Brachionus plicatilis Müller has shed new light on the mate recognition system of rotifers. One result is improved understanding of the importance of mating behavior as a highly efficient process used by rotifers to choose conspecifics. There are many differences in the main characteristics of mating behavior in members of five different families of rotifers. The present work describes the use of these characteristics to assess species boundaries, especially where boundaries between two or more species are unclear. The method proposed here can assess quantitatively the response of males of one species to females of a questionable taxon by measuring the percentage of matings initiated and the number of completed copulations. The data generated can then be used together with molecular, morphological, and other data to determine the species boundaries. This approach can help distinguish between morphological differences resulting from evolutionary divergence of species and morphological differences induced by environmental or ecological factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017005602735
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  • 4
    Electronic Resource
    Electronic Resource
    Relationship between thigmotropism and Candida biofilm formation in vitro (1998)
    Springer
    Mycopathologia 144 (1998), S. 125-129 
    Details
    ISSN: 1573-0832
    Keywords: biofilm ; Candida albicans ; Candida tropicalis ; saliva ; serum ; thigmotropism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The biofilm formation of the oral fungal pathogen Candida on denture acrylic strips coated with saliva or serum was examined in relation to the ability to induce hyphae by thigmotropic reaction, using C. albicans (4 isolates), C. glabrata (3 isolates) and C. tropicalis (3 isolates). Both the degree of biofilm formation and the amount of hyphae exhibiting thigmotropism varied depending upon both the species and strains of Candida. Although there was no significant correlation between the amount of hyphae induced by thigmotropic reaction of fungal isolates and biofilm formation on uncoated control specimens (r = 0.577; p 〈 0.05), the ability of hyphae induced by thigmotropic reaction significantly correlated with the amount of both saliva- and serum-admixed biofilms (r = 0.734; p 〈 0.05 and r = 0.793; p 〈 0.01, respectively). Taken together our in vitro data suggested that the hyphal induction by thigmotropic reaction is of importance in candidal biofilm formation on saliva- or serum-coated acrylic surfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007073930933
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis and Stereochemistry of Some 1,3-Dioxane Diacetals of o-Phthaldialdehyde (1997)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1997 (1997), S. 2371-2377 
    Details
    ISSN: 0947-3440
    Keywords: Conformational analysis ; NMR spectra ; Solid-state structure ; 1,3-Dioxane derivatives of o-phthaldialdehyde ; Chromatographic separation of cis,trans isomers ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The stereochemistry of some diacetals of o-phthaldialdehyde with 2-substituted-1,3-propanediols was studied using NMR spectroscopy and the solid-state molecular structure of one compound established by single-crystal X-ray diffractometry. The cis and trans isomers of some diacids and diesters, produced as derivatives bearing the desired substituents in the 5 and 5′ positions of the heterocycles, have been separated by preparative TLC and identified by their NMR spectra.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199719971128
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