Summary
In maize coleoptile segments, anaerobiosis completely inhibits IAA-induced cell enlargement, H+ extrusion and K+ uptake, while it only partially inhibits the stimulating effect of FC on the same processes. Very similar results are obtained by blocking protein synthesis with cycloheximide. As anaerobiosis blocks protein synthesis within 15 min, we conclude that the block of protein synthesis, and not the drop of ATP per se is the cause of the different response of IAA and FC to anaerobiosis.
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Acknowledgments. We thank Prof. E. Marrè for helpful discussions and critical reading of the manuscript, and Agrochemical Division of Montedison S.p.A., Milan (Italy) for the gift of FC.
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Rasi-Caldogno, F., Cerana, R. & Pugliarello, M.C. Effects of anaerobiosis on auxin- and fusicoccin-induced growth and ion transport. Experientia 34, 841–842 (1978). https://doi.org/10.1007/BF01939653
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DOI: https://doi.org/10.1007/BF01939653