Abstract
THE profound biological effects produced by indole-acetic acid and gibberellic acid, when applied to higher plants, have led many investigators to study their activity on algae. In general, the results of such experiments have not been striking. An excellent review of the literature concerning the effect of auxins on algae is to be found in the studies of Thimann and Beth1. These workers demonstrated a two-fold increase in stalk elongation of Acetabularia in the presence of 5 × 10−5 M indoleacetic acid. Further, they were able to show that cap formation was enhanced both in the intact as well as enucleated cells, a conclusive demonstration that indoleacetic acid acts directly on the cytoplasm.
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References
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CONRAD, H., SALTMAN, P. & EPPLEY, R. Effects of Auxin and Gibberellic Acid on Growth of Ulothrix . Nature 184, 556–557 (1959). https://doi.org/10.1038/184556a0
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DOI: https://doi.org/10.1038/184556a0
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