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  • Root elongation  (2)
  • Analytical Chemistry and Spectroscopy  (1)
  • 1990-1994  (3)
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  • 1990-1994  (3)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Responses ofArabidopsis roots to auxin studied with high temporal resolution: Comparison of wild type and auxin-response mutants (1994)
    Springer
    Planta 194 (1994), S. 215-222 
    Details
    ISSN: 1432-2048
    Keywords: Arabidopsis (mutants) ; Auxin ; Growth (root, auxin) ; Mutant (Arabidopsis) ; Root elongation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We modified a video digitizer system to allow short-term high-resolution measurements of root elongation in intact seedlings ofArabidopsis thaliana (L.) Heynh. We used the system to measure the kinetics of promotion and inhibition of root elongation by applied auxin and to determine the dose-response relationship for auxin action on elongation in roots of wild-type seedlings and seedlings of mutants (axr1,aux1, andaxr2) with altered auxin responsiveness. Roots of the mutants showed less inhibition in the presence of inhibitory concentrations of auxin than did roots of the wild type. The latent period preceding the change in elongation rate after auxin application was the same foraxr1 andaxr2 as for the wild type whereas the latent period foraux1 was about twice as long as for the wild type. Low concentrations (ca. 10−11 M) of auxin induced substantial promotion of root elongation in the wild type and inaxr2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01101680
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Responses of Arabidopsis roots to auxin studied with high temporal resolution: Comparison of wild type and auxin-response mutants (1994)
    Springer
    Planta 194 (1994), S. 215-222 
    Details
    ISSN: 1432-2048
    Keywords: Arabidopsis (mutants) ; Auxin ; Growth (root, auxin) ; Mutant (Arabidopsis) ; Root elongation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We modified a video digitizer system to allow short-term high-resolution measurements of root elongation in intact seedlings of Arabidopsis thaliana (L.) Heynh. We used the system to measure the kinetics of promotion and inhibition of root elongation by applied auxin and to determine the dose-response relationship for auxin action on elongation in roots of wild-type seedlings and seedlings of mutants (axr1, aux1, and axr2) with altered auxin responsiveness. Roots of the mutants showed less inhibition in the presence of inhibitory concentrations of auxin than did roots of the wild type. The latent period preceding the change in elongation rate after auxin application was the same for axr1 and axr2 as for the wild type whereas the latent period for aux1 was about twice as long as for the wild type. Low concentrations (ca. 10−11 M) of auxin induced substantial promotion of root elongation in the wild type and in axr2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00196390
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Determination of the primary structure of peptides using fast atom bombardment mass spectrometry (1990)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 19 (1990), S. 13-26 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The determination of the amino acid composition and sequence of a peptide, using both conventional and tandem fast atom bombardment mass spectrometry, is presented. First a list of potential empirical formulae is generated using the accurate mass and isotopic peak intensity ratios from the molecular ion cluster. The formulae are mathematically analyzed to ensure that they correspond to linear peptides composed of 19 common amino acids. Then using the ions below m/z 160 Da, which are characteristic of the amino acid content of the peptide, the formulae are decomposed into possible amino acid compositions. From each composition sequences are generated and their predicted fragment ions are compared to ions present in the mass spectrum. A score based on the intensities and the occurrence of consecutive sequence fragments is calculated. Finally sequences with the ten highest scores are retained. Analyses performed on typical peptides with molecular weights below 1500 Da indicate that identification can generally be achieved using this approach.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200190103
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    Paper (German National Licenses)
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