Abstract
The role of ethylene in adventitious root formation and its involvement in auxin-induced rooting were investigated in cuttings of Vigna radiata(L.). Treatment with 30 μM indole-3-acetic acid (IAA) for 24 h slightly inhibited rooting, whereas the same concentration of indole-3-butyric acid (IBA) significantly stimulated it. Ethylene derived from 1-aminocyclopropane-l-carboxylic acid (ACC) increased the number of adventitious roots, but inhibited their emergence and elongation. Endogenous levels of ethylene, ACC and malonyl-ACC (MACC) were initially higher in cuttings treated with IAA. This trend was quickly reversed and cuttings, particularly hypocotyls, treated with IBA produced higher levels of ethylene and had more ACC and MACC during most of the rooting process. Aminoethoxyvinylglycine significantly inhibited rooting but its inhibitory effect could not be reversed by ACC. The data suggest that the stimulating effect of IBA on rooting is closely associated with its induction of ethylene biosynthesis.
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© 1989 Kluwer Academic Publishers
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Riov, J., Yang, S.F. (1989). Ethylene and Auxin-Ethylene Interaction in Adventitious Root Formation in Mung Bean Cuttings. In: Clijsters, H., De Proft, M., Marcelle, R., Van Poucke, M. (eds) Biochemical and Physiological Aspects of Ethylene Production in Lower and Higher Plants. Advances in Agricultural Biotechnology, vol 26. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1271-7_17
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DOI: https://doi.org/10.1007/978-94-009-1271-7_17
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7065-2
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