Abstract
INDOLE has been described as being inactive by Thimann and Koepfli1, but skatole ( methyl indole) was apparently not tested. Pure skatole was obtained from B.D.H. and was twice recrystallised to remove possible impurities. Bending experiments were performed using oat coleoptiles (Argentine VI). Skatole was applied in gelatin blocks 1 mm.3; the concentration used was 1 × 104 in water. Gelatin and water were used for controls. Permanent records of the experiments were made as shadow photographs.
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References
NATURE, 135, 101 (1935).
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GLOVER, J. Skatole as a Growth-Promoting Substance. Nature 137, 320–321 (1936). https://doi.org/10.1038/137320b0
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DOI: https://doi.org/10.1038/137320b0
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