Effect of moisture stress on abscisic acid levels in Ricinus communis L. with particular reference to phloem exudate
- 1 January 1973
- journal article
- Published by Springer Science and Business Media LLC in Planta
- Vol. 113 (4), 367-372
- https://doi.org/10.1007/bf00387319
Abstract
Abscisic acid (ABA) increased considerably in stem apices attached to Ricinus plants during a moisture stress but only slightly in stem apices which were detached and then allowed to lose water. A very marked rise in ABA also occurred in phloem-sap of moisture-stressed Ricinus plants. These results suggest that in apices of moisture-stressed plants the increased ABA does not arise in situ but is translocated to the apex after synthesis in the mature leaves.Keywords
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