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Zinsmeister HD, Höllmüller W. Gerbstoffe und Wachstum : III. Mitteilung analyse des IES/tannin-Antagonismus bei haferkoleoptil-cylindern. [Tannins and growth : III. Analysis of the IAA/Tannin-Antagonism in oat-coleoptile cylinders]. Planta. 1967;73(4):333-43doi: 10.1007/BF00385380.
Zinsmeister, H. D., & Höllmüller, W. (1967). Gerbstoffe und Wachstum : III. Mitteilung analyse des IES/tannin-Antagonismus bei haferkoleoptil-cylindern. [Tannins and growth : III. Analysis of the IAA/Tannin-Antagonism in oat-coleoptile cylinders]. Planta, 73(4), 333-43. https://doi.org/10.1007/BF00385380
Zinsmeister, H D, and Höllmüller, W. "Gerbstoffe und Wachstum : III. Mitteilung analyse des IES/tannin-Antagonismus bei haferkoleoptil-cylindern." [Tannins and growth : III. Analysis of the IAA/Tannin-Antagonism in oat-coleoptile cylinders]. Planta vol. 73,4 (1967): 333-43. doi: https://doi.org/10.1007/BF00385380
Zinsmeister HD, Höllmüller W. Gerbstoffe und Wachstum : III. Mitteilung analyse des IES/tannin-Antagonismus bei haferkoleoptil-cylindern. [Tannins and growth : III. Analysis of the IAA/Tannin-Antagonism in oat-coleoptile cylinders]. Planta. 1967 Dec;73(4):333-43. doi: 10.1007/BF00385380. German. PMID: 24553745.
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Planta. 1967 Dec;73(4):333-43. doi: 10.1007/BF00385380.

[Tannins and growth : III. Analysis of the IAA/Tannin-Antagonism in oat-coleoptile cylinders].

Planta

[Article in German]
H D Zinsmeister, W Höllmüller

Affiliations

  1. Botanisches Institut der Universität München, München, Deutschland.

PMID: 24553745 DOI: 10.1007/BF00385380

Abstract

An analysis of the IAA/Tannin-Antagonism which occurs in oat-coleoptiles was carried out. The investigations were done with 10 mm coleoptile sections of 4-day-old seedlings of Avena sativa L. var. "Flämingsgold".First it was shown that the IAA/Tannin-antagonism which could be established with a tannin-preparation by "Fluka" resembled very much that caused by "Merck-Tannin". Whereas the antagonism which was demonstrated by "Merck-Tannin" seemed to be independent of the IAA concentration, the antagonism induced by "Fluka-Tannin", showed a strict correlation to the applied amount of IAA. An increase of the IAA concentration resulted in a decrease of the antagonistic tannin effect. A 5·10(-5) molar tannin solution reduced the activity of an IAA-oxydase preparation by 71-92%.Oat-coleoptile cylinders which were preincubated for 4 hours in a 10(-5) molar or a 10(-4) molar IAA solution and subsequently treated with tannin for 16 hours showed no growth inhibition at all.After a preincubation period with tannin solutions (5·10(-6) up to 5·10(-4) M) for 3 hours the uptake of IAA during 20 hours by oat-coleoptile cylinders was lowered by 12-45%. It seems to be clear that the IAA/Tannin-antagonism in buffered solutions is due to a remarkable drop in the IAA uptake by the coleoptile tissue.

References

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