Gibberellin stimulated growth

Gibberellin readily translocates within a shoot. If one leaf is treated, the compound moves to the apical growing region and there stimulates growth. This fact has been used in studies of absorption and/or translocatability of different gibberellins in the grape (39). 

Ethylene as a stimulator of growth and development. The most observed actions of ethylene on growing plants involves growth inhibition, or acceleration of senescence. These actions are especially evident in the antagonism or opposition of ethylene to auxins, gibberellins and cytokinins (27), as already outlined above. Actually ethylene stimulates growth in many types of cells, especially in water plants (Table II). When ethylene acts to stimulate cell elongation, as in water plants, auxins and CC>2 enhance the ethylene effect (38,39). This interaction is the reverse of that observed on land plants wherein ethylene opposes the effects of auxin, GA3 and cytokinins. 

Stowe B, Yamaki T (1959) Gibberellins Stimulants of plant growth. Science 129 807-816 Thimann KV (1960) Plant growth. In Nowinski WW (ed) Fundamental aspects of normal and malignant growth. Elsevier, Amsterdam, pp 748-822 Thimann KV (1977) Hormone action in the life of whole plants. Univ Massachusetts Press, Amherst... 

Street HE (1966) The physiology of root growth. Annu Rev Plant Physiol 17 315-344 Stuart DA, Jones RL (1977) Roles of extensibility and turgor in gibberellin- and dark-stimulated growth. Plant Physiol 59 61-68... 

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