GIBBERELLIC ACID 1g.

Plant Tissue Culture products include Murashige and Skoog media, plant growth regulators, plant growth hormones, plant transformation systems, orchid tissue culture, gelling agents and other products for plant tissue culture. Plant Tissue Culture supports micropropagation and culture media. Conveniently packaged, rigorously assayed and supported by the leading supplier for Plant Tissue Culture research, Sigma-Aldrich reagents will answer your needs for micropropagation, Murashige and Skoog media, plant growth regulators, plant growth hormones, plant transformation systems, orchid tissue culture or gelling agents. Plants make plant growth regulators, often called phytohormones, to regulate growth, development, and responses to stimuli. Each of these small organic molecules has pleiotropic effects. The balance between them shifts constantly. Changes in phytohormone levels result in gene activation shifts. In tissue culture the concentration of growth regulators in the medium must be optimized and may change according to the desired result. For example, the synthetic auxin 2,4-D is very often the primary phytohormone to support callus formation and maintenance. Cytokinins promote shoot formation, but need auxins as well to promote mitosis. Sigma-Aldrich offer the naturally occurring hormones as well as potent synthetic substitutes. In addition to these we offer antagonists, useful as tools for investigating hormonal mechanisms of action.