ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Theory  (3)
  • Catharanthus roseus  (2)
  • 2020-2021
  • 1995-1999  (2)
  • 1985-1989  (2)
  • 1975-1979  (1)
  • 1960-1964
  • 1
    Electronic Resource
    Electronic Resource
    Transgenic periwinkle tissues overproducing cytokinins do not accumulate enhanced levels of indole alkaloids (1996)
    Springer
    Plant cell, tissue and organ culture 45 (1996), S. 223-230 
    Details
    ISSN: 1573-5044
    Keywords: Agrobacterium tumefaciens ; Catharanthus roseus ; cytokinin ; isopentenyl-transferase ; stress response
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Cytokinins play a critical role in several aspects of plant growth, metabolism and development. We previously reported that adding cytokinins to the culture medium of a suspension-cultured cell line of periwinkle increased the accumulation of indole alkaloids, and our aim was to compare the effect of exogenously-applied cytokinins with that of elevated levels of endogenous cytokinins on indole alkaloid production. We used an Agrobacterium tumefaciens strain yielding a plasmid with the isopentenyl transferase gene under control of its own promoter. Co-culture of suspension cells with the bacteria caused a severe stress response leading to cell necrosis. Therefore, we failed to transform this material but we succeeded in transforming periwinkle cotyledons. We verified that callus cultures generated from the isopentenyl transferase-transgenic cotyledons accumulated high cytokinin concentrations. Treating normal callus cultures (generated from untransformed cotyledons) with cytokinins enhanced their alkaloid production. By contrast, the enhanced concentration of endogenous cytokinins in transgenic calli did not increase indole alkaloid production, and thus did not mimic the effect of exogenously-applied cytokinins. Hypothesis to explain this discrepancy are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00043634
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Molecular characterization of a cytokinin-inducible periwinkle protein showing sequence homology with pathogenesis-related proteins and the Bet v 1 allergen family (1998)
    Springer
    Plant molecular biology 36 (1998), S. 791-798 
    Details
    ISSN: 1573-5028
    Keywords: Catharanthus roseus ; cell biochemical differentiation ; cytokinin ; intracellular pathogenesis-related protein ; pollen allergen ; RT- and RACE-PCR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Cytokinin treatment of periwinkle callus cultures increased the accumulation of a protein, designated T1, in two-dimensional separated protein extracts. The first 30 NH2-terminal amino acids were determined by Edman degradation and showed significant sequence homology with intracellular pathogenesis-related (IPR) plant proteins and the Bet v 1 allergen family. The deduced amino acid sequence of cDNAs coding for T1, isolated by RT-PCR and 5′ RACE-PCR, exhibited an average sequence identity of 40% with both IPR and Bet v 1-related allergens. T1 and all related proteins contained a p-loop motif typically found in nucleotide-binding proteins as the most conserved sequence feature. Northern blot analysis showed that cytokinin treatment of periwinkle callus induced T1 transcripts, whereas addition of 2,4-dichlorophenoxyacetic acid inhibited this accumulation. Hybridization of genomic periwinkle DNA with the T1 cDNA suggested that the protein is encoded by a single-copy gene. Immunoblot studies with a panel of Bet v 1-specific antibodies and sera from Bet v 1 allergic individuals identified T1 as a protein that is immunologically distinct from the Bet v 1 allergen family and has no allergenic properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005951208815
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Separation efficiency vs. resolution for unequal chromatographic peaks (1988)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 11 (1988), S. 681-683 
    Details
    ISSN: 0935-6304
    Keywords: Theory ; Separation efficiency ; Unequal peaks ; Direct method ; Impirical equation ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240110917
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Average quantities in chromatography. Application to the Van Deemter and Golay Equations (1988)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 11 (1988), S. 907-911 
    Details
    ISSN: 0935-6304
    Keywords: Theory ; Average quantities ; Pressure correction factor ; Significant temperature ; Average plate height ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240111215
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Comparison between different resolution equations (1979)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 2 (1979), S. 193-194 
    Details
    ISSN: 0935-6304
    Keywords: Chromatography ; Theory ; Resolution equations ; Comparison and evaluation; equation (4) preferred ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240020410
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...