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Planta

, Volume 53, Issue 6, pp 612–627 | Cite as

Trijodbenzoesäure und die Stoffleitung bei höheren Pflanzen

  • Eike Libbert
Article

Summary

The effect of 2,3,5-triiodobenzoic acid (TIBA) on the translocation of various substances within etiolated pea plants was tested by applying the substances to different places on the decapitated plants and measuring the effect of the substances on the growth of lateral buds after placing a lanolin ring containing TIBA around the stem between the place of application of the substance and the buds. In control experiments the TIBA-ring was placed in such a way, that TIBA and the other substance reached the bud from opposite directions.

TIBA blocked the basipetal translocation of indole-3-acetic acid, α-4-chlorophenoxyisobutyric acid and α-(1-naphthylmethylsulfid) propionic acid, it did not block the acropetal translocation of sucrose, potassium nitrate and indole-3-acetic acid. It did howevers block the acropetal translocation of native inhibitors (correlation inhibitors) extracted from pea plants. It is concluded that TIBA is a general blocker of the energy requiring translocation of many substances in plants. Moreover TIBA produces various different effects.

Intensity of translocation of TIBA was equal in both directions, acropetal and basipetal. Application of TIBA to more distal points of the stem may cause greater effects because of a faster migration through younger tissues into the stem.

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Copyright information

© Springer-Verlag 1959

Authors and Affiliations

  • Eike Libbert
    • 1
  1. 1.Abteilung Botanik der Veterinärmedizinischen Fakultät der Humboldt-Universität zu BerlinBerlin N 4

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