Murashige and Skoog medium is a widely used plant tissue culture growth medium. M&S Basal Medium contains macronutrients that include high levels of nitrate and organic additives such as agar, sugars, vitamins and growth regulators. Important growth regulators frequently added to M&S include IAA (auxin/morphogen) and the Kinetin (cytokinin/cell division promoter).Use at a concentration of one ml per liter of prepared medium to achieve the proper final concentration.
Murashige and Skoog medium can be reconstituted from powder or by combining products that are major components of complete M&S medium, such as macronutrient mixtures and vitamin mixtures. Murashige and Skoog Vitamin powder (M3900) can be combined with Murashige and Skoog micro/macro-nutrients to generate basal media which when supplemented with organics, agar, auxins and cytokinins yield complete medium for growth plant tissue culture. The M3900 Solution is a 1000x concentrate which contains (mg/ml): 2.0 glycine, 100.0 myo-inositol, 0.50 nicotinic acid, 0.50 pyridoxine hydrochloride, 0.10 thiamine hydrochloride.