MurashigeSkoogMediums

Murashige and Skoog medium, often abbreviated as MS medium, is a widely used plant tissue culture medium. Developed by Toshio Murashige and Folke K. Skoog in 1962, it is renowned for its high concentration of mineral salts, particularly nitrates and ammonium ions. This composition promotes vigorous growth and development in a broad range of plant species.

The basal MS medium typically consists of inorganic salts, including macroelements like nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur, and microelements such as iron, manganese, zinc, copper, boron, molybdenum, and cobalt. It also contains a carbon source, usually sucrose, and often vitamins like thiamine and pyridoxine. For plant growth, plant hormones, such as auxins and cytokinins, are usually added to the medium, with their specific concentrations and ratios adjusted depending on the plant species and the desired developmental outcome (e.g., callus induction, shoot proliferation, or root formation).

MS medium has become a standard for plant propagation, genetic engineering, and research due to its versatility and effectiveness. Its high salt content supports rapid cell division and differentiation, making it suitable for a vast array of plant tissues and species, from herbaceous plants to woody species. Modifications to the standard MS formulation are common to optimize conditions for specific plant types or experimental objectives.