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  • 1
    Electronic Resource
    Electronic Resource
    Phenylalanine ammonia-lyase and chalcone synthase in glands ofPrimula kewensis (W. Wats): immunofluorescence and immunogold localization (1995)
    Springer
    Planta 196 (1995), S. 712-719 
    Details
    ISSN: 1432-2048
    Keywords: Chalcone synthase ; Farina ; Flavonoid biosynthesis ; Gland ; Phenylalanine ammonia-lyase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Phenylalanine ammonia-lyase (PAL) and chalcone synthase (CHS) were localized by indirect immunofluorescence and immunogold labeling in glands ofPrimula kewensis. Both enzymes were exclusively present in the head cells of the glands. Phenylalanine ammonialyase was located in the regions of the dense tubular endoplasmic reticulum and occasionally found in more or less spherical organelles that have not yet been identified. Furthermore, an appreciable proportion of the enzyme protein was associated with the plasmalemma and the cell wall of the head cell. In contrast, the occurrence of CHS was restricted to the spherical, unidentified cell compartments. Our findings indicate that the gland cells have the potential for flavonoid biosynthesis. When a mutant ofP. kewensis forming structurally intact glands but incapable of farina excretion was studied, neither PAL nor CHS were found in the head cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01106765
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Chalcone synthases from spinach (Spinacia oleracea L.) (1988)
    Springer
    Planta 173 (1988), S. 544-553 
    Details
    ISSN: 1432-2048
    Keywords: Spinacia (chalcone synthase) ; Chalcone synthase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The distribution of the two chalcone synthases in leaves ofSpinacia oleracea L. was studied at both the tissue and the subcellular level using immunofluorescence and immunogold techniques. Neither technique differentiated between the two enzyme forms. The chalcone synthases are located in the upper and the lower epidermis and to a minor extent in the subepidermal layers. Traces of the two enzyme forms may be present in the residual mesophyll. This distribution is independent of leaf age. A similar distribution of chalcone synthase among tissues was observed in parsley, pea, and bean. Chalcone synthase is also present in guard cells. The spinach chalcone synthases are cytosolic enzymes, and are not associated with tonoplast or endoplasmic reticulum. A small fraction of the chalcone synthases is located in the stroma of the chloroplasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00958968
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Phenylalanine ammonia-lyase and chalcone synthase in glands of Primula kewensis (W. Wats): immunofluorescence and immunogold localization (1995)
    Springer
    Planta 196 (1995), S. 712-719 
    Details
    ISSN: 1432-2048
    Keywords: Chalcone synthase ; Farina ; Flavonoid biosynthesis ; Gland ; Phenylalanine ammonia-lyase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Phenylalanine ammonia-lyase (PAL) and chalcone synthase (CHS) were localized by indirect immunofluorescence and immunogold labeling in glands of Primula kewensis. Both enzymes were exclusively present in the head cells of the glands. Phenylalanine ammonialyase was located in the regions of the dense tubular endoplasmic reticulum and occasionally found in more or less spherical organelles that have not yet been identified. Furthermore, an appreciable proportion of the enzyme protein was associated with the plasmalemma and the cell wall of the head cell. In contrast, the occurrence of CHS was restricted to the spherical, unidentified cell compartments. Our findings indicate that the gland cells have the potential for flavonoid biosynthesis. When a mutant of P. kewensis forming structurally intact glands but incapable of farina excretion was studied, neither PAL nor CHS were found in the head cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00197336
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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