FURTHER STUDIES ON STEROL STIMULATION OF SEXUAL REPRODUCTION IN PYTHIUM

Abstract
The influence of amino acids on the stimulatory activity of cholesterol on the production of oogonia by a species of Pythium is reported. None of the sterols tested was metabolized by the fungus, but the sterols which do affect oogonia production were adsorbed, unchanged by the organism, and probably incorporated in the cell membrane. The organism survived higher temperature when grown on a medium containing cholesterol than when grown on a medium without cholesterol.