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Action of 2.3.5-Triiodobenzoic Acid on Growth of Root Hairs


Zimmermann and Hitchcock1 found 2.3.5-tri-iodobenzoic acid to be active as a 'formagen', that is, a substance affecting flowering and growth processes in the tomato. In the Avena coleoptile standard test, this compound acts as an anti-auxin2, inhibiting the action of indole-3-acetic acid. The present communication deals with the influence of 2.3.5-tri-iodobenzoic acid on the growth of root hairs, these organs being used as a test object to investigate the growth of a single cell and the growth and structure of cell walls.

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  1. Zimmermann, P. W., and Hitchcock, A. E., Cont. Boyce Thompson Inst., 12, No. 7 (1942).

  2. Waard, J. de, and Florschütz, P. A., Proc. Kon. Ned. Akad. Wetensch. Amsterdam, 51, No. 10 (1948).

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GORTER, C. Action of 2.3.5-Triiodobenzoic Acid on Growth of Root Hairs. Nature 164, 800–801 (1949).

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