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  • 1
    Electronic Resource
    Electronic Resource
    Reduction in the free indole-3-acetic acid levels in Alaska pea toy the gibberellin biosynthesis inhibitor uniconazol (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 76 (1989), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The gibberellin biosynthesis inhibitor uniconazol reduces both the elongation and indole-3-acetic acid content of growing Pisum sativum cv. Alaska intemodes. Both internode growth and indole-3-acetic acid content in uniconazol-treated plants can be elevated by gibberellin A3 treatment. The lengths of the growing intemodes are directly related to the indole-3-acetic acid contents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1989.tb05474.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Gibberellin-enhanced indole-3-acetic acid biosynthesis: D-Tryptophan as the precursor of indole-3-acetic acid (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 70 (1987), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Stem segments excised from light-grown Pisum sativum L. (cv. Little Marvel) plants elongated in the presence of indole-3-acetic acid and its precursors, except for L-tryptophan, which required the addition of gibberellin A, for induction of growth. Segment elongation was promoted by D-tryptophan without a requirement for gibberellin, and growth in the presence of both D-tryptophan and L-tryptophan with gibberellin A3, was inhibited by the D-aminotransferase inhibitor D-cycloserine. Tryp-tophan racemase activity was detected in apices and promoted conversion of L-tryptophan to the D isomer; this activity was enhanced by gibberellin A3. When applied to apices of intact untreated plants, radiolabeled D-tryptophan was converted to indole-3-acetic acid and indoleacetylaspartic acid much more readily than L-tryptophan. Treatment of plants with gibberellin A3, 3 days prior to application of labeled tryptophan increased conversion of L-tryptophan to the free auxin and its conjugate by more than 3-fold, and led to labeling of N-malonyl-D-tryptophan. It is proposed that gibberellin increases the biosynthesis of indole-3-acetic acid by regulating the conversion of L-tryptophan to D-tryptophan, which is then converted to the auxin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1987.tb04316.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Polyamine-induced prolongation of storage in tomato fruits (1991)
    Springer
    Plant growth regulation 10 (1991), S. 283-290 
    Details
    ISSN: 1573-5087
    Keywords: Lycopersicon esculentum ; tomato ; fruit ; polyamines ; postharvest storage ; shelf life ; fruit softening
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Mature green tomato fruit (Lycopersicon esculentum Mill) of cv. ‘Rutgers’ and the line ‘Alcobaca-red’ were vacuum infiltrated with solutions of polyamines, their precursors and metabolites, and other compounds which might affect ripening and/or storage duration. Putrescine (1,4-diaminobutane), spermidine, spermine, diaminopropane, γ-aminobutyric acid and methionine were found to increase the storage life of these fruit after vacuum infiltration of the test compounds and storage of fruit in darkness. Polyamines probably play a role in the normal ripening/overripening process and may prove commercially valuable in the extension of fruit shelf life.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00024588
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    Paper (German National Licenses)
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