| Autor: |
HAIDAR, M A, ORR, G L, WESTRA, P. |
| Zdroj: |
Annals of Applied Biology; April 1998, Vol. 132 Issue: 2 p331-338, 8p |
| Abstrakt: |
Phytohormones were screened for their effects on induction of coiling and prehaustoria in de-etiolated excised dodder seedlings under different light treatments. Zeatin stimulated coiling and the formation of prehaustoria under all light tested, even in darkness. A synergistic effect was observed with zeatin and far-red light (700-800 nm) but not with red light (600-700 nm) on the formation of prehaustoria. Application of indole-3acetic acid inhibited zeatin-induced coiling and prehaustoria development under blue (400-500 nm) and a mixture of red plus far-red light, but not in blue plus far-red light. Ethylene had no effect on coiling and prehaustoria development. Observations suggest that zeatin-induced coiling and prehaustoria development may be mediated by phytochrome. |
| Databáze: |
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