Murashige and Skoog medium

Murashige and Skoog medium or MSO (or MS0 (MS-zero)) is a plant growth medium in the laboratory.

It contains all salts that a plant needs to grow. It contains the macro nutrients

• Ammonium nitrate
• Calcium chloride
• Magnesium sulfate
• Potassium nitrate
• Potassium phosphate

as well as many micro nutrients in small amounts and Vitamins, Sucrose and Agar.

Many variations are known, including 1/2 MSO (half strength, often used for Arabidopsis).