Gibberellin-enhanced elongation of inverted Pharbitis nil shoot prevents the release of apical dominance
Ethylene evolution resulting from the gravity stress of shoot inversion appears to induce the release of apical dominance in Pharbitis nil (L.) by inhibiting elongation of the inverted shoot. It has been previously demonstrated that this shoot inversion release of apical dominance can be prevented...
| Publié dans: | Plant science : an international journal of experimental plant biology. - 1985. - 49(1987) vom: 01., Seite 175-9 |
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| Format: | Article |
| Langue: | English |
| Publié: |
1987
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| Accès à la collection: | Plant science : an international journal of experimental plant biology |
| Sujets: | Journal Article Research Support, U.S. Gov't, Non-P.H.S. NASA Discipline Number 40-10 NASA Discipline Plant Biology NASA Program Space Biology Non-NASA Center Ethylenes Gibberellins Plant Growth Regulators ethylene plus... |
| Résumé: | Ethylene evolution resulting from the gravity stress of shoot inversion appears to induce the release of apical dominance in Pharbitis nil (L.) by inhibiting elongation of the inverted shoot. It has been previously demonstrated that this shoot inversion release of apical dominance can be prevented by promoting elongation in the inverted shoot via interference with ethylene synthesis or action. In the present study it was shown that apical dominance release can also be prevented by promoting elongation of the inverted shoot via treatment with gibberellic acid (GA3). A synergistic effect was observed when AgNO3, the ethylene action inhibitor, was applied with GA3. Both GA3 and AgNO3 increased ethylene production in the inverted shoot. These results are consistent with the view that it is ethylene-induced inhibition of elongation and not any direct effect of ethylene per se which is responsible for the outgrowth of the highest lateral bud |
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| Description: | Date Completed 10.10.1997 Date Revised 30.09.2020 published: Print Citation Status MEDLINE |
| ISSN: | 1873-2259 |