Topic
Gibberellic acid
About: Gibberellic acid is a research topic. Over the lifetime, 6597 publications have been published within this topic receiving 109294 citations. The topic is also known as: GIBBERELLIN A3.
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01 Jan 1961
124 citations
TL;DR: Treatment with gibberellic acid markedly retarded ripening in terms of development of redness of intact tomato fruits, or of pieces in tissue culture, but ethylene stimulations of respiration were not.
Abstract: Treatment with gibberellic acid, at concentrations as low as 10(-7)M, of intact tomato fruits, or of pieces in tissue culture, markedly retarded ripening in terms of development of redness. Ethylene stimulations of color development were prevented by treatment with gibberellic acid, but ethylene stimulations of respiration were not. Gibberellin can delay the progress of some components of the ripening of fruit, preventing some of the changes triggered by ethylene.
124 citations
TL;DR: Changes in the fine structure of barley aleurone cells following treatment with gibberellic acid (GA3) are described and the relevance of these GA3-stimulated changes in aleur one-cell fine-structure toGA3-regulated α-amylase production is discussed.
Abstract: This paper describes changes in the fine structure of barley aleurone cells following treatment with gibberellic acid (GA3). Within 2 hr of GA3 treatment the aleurone grains lose the spherical appearance characteristic of aleurone cells incubated in water and buffer alone. This swelling increases with increased exposure of the cells to GA3 and reaches a maximum at about 10 hr. Accompanying this increase in volume of the aleurone grains is an increase in the amount of rough endoplasmic reticulum. The relevance of these GA3-stimulated changes in aleurone-cell fine-structure to GA3-regulated α-amylase production is discussed.
124 citations
TL;DR: Growth responses of forty-nine kinds of plants were studied when gibberellic acid, a naturally occurring plant regulator, was applied to them in various ways, finding no significant differences in responsiveness between the different species of the genera studied or among the different varieties and hybrids.
Abstract: 1. Growth responses of forty-nine kinds of plants were studied when gibberellic acid, a naturally occurring plant regulator, was applied to them in various ways. The plants included representatives of various genera, species, varieties, and hybrids of agronomic, forestry, or horticultural interest. Gibberellic acid is a growth substance produced by the fungus Gibberella fujikuroi (Saw.) Wr. (conidial stage Fusarium moniliforme Sheld.), a pathogen of rice. The chemical was applied in lanolin or as an aqueous spray, dip, or soak. Treated parts of plants included stems, leaves, vegetative buds, flowers, fruits, and roots. 2. Most kinds of plants studied responded in several ways to gibberellic acid, the most obvious of these responses being stem elongation. Marked differences in the responsiveness of different genera, however, were noted. Pinto bean plants, for example, responded when sprayed with a mixture containing 0.01-p.p.m. concentration of the acid, while Virginia pine, white pine, and white spruce re...
123 citations
122 citations