The Chloroindole Auxins of Pea, Strong Plant Growth Hormones or Endogenous Herbicides?

Kjeld Christensen Engvild

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    Abstract

    In this work the three theses below are discussed:

    1) Identification and quantitative determination of the very strong plant hormone, the auxin 4-chloroindole-3-acetic acid methyl ester, in immature seeds of Pisum, Vkia, Latkyrvs, and Lens spp. by incorporation of radioactive 36C1, thin layer chromatography, autoradiography, colour reactions, and gas chromatography/mass spectrometry.

    2) The strong biological activity of 4-chloroindoIe-3-acetic acid and its analogues and its ability to induce strong, almost irreversible, ethylene evolution.

    3) The possible role of chloroindole auxin in plants, particularly if it might be the hypothetical death hormone, secreted from developing seeds, which induces senescence and kills the mother plant at maturity; if plants generally have several auxin types, growth promoters and endogenous herbicides; and if other chlorine-containing plant hormones occur in developing seeds of other crop species.
    Original languageEnglish
    Place of PublicationRoskilde
    PublisherRisø National Laboratory
    Number of pages120
    ISBN (Print)87-550-1922-6
    Publication statusPublished - 1994

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