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Light stability of auxin in Avena coleoptiles

Light stability of auxin in Avena coleoptiles

Bot Gaz 101(3): 706-714

DOI: 10.2307/2472402

Auxin, once it has been extracted from Avena coleoptiles, is stable in light. As shown by ether extractions, 19% of the auxin inside the coleoptile is inactivated by sunlight or incandescent electric light (23.5% inactivated, omitting 2 negative cases). There is no corresponding decrease in the case of free-moving auxin.

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