Light and dark metabolism of L- and D-amino acids in 5 strains of Chlorella vulgaris and 4 strains of the genus Ankistrodesmus.

Abstract

In the light, 2 out of the 4 newly testedChlorella vulgaris strains were found to use about as many amino acids as a source of nitrogen as the previously investigated strain “Delft”; the other 2C. vulgaris strains and 3 of theAnkistrodesmus strains used only a few. The 4thAnkistrodesmus strain used none. On the average,l-amino acids supported better growth thand-amino acids, butd-serine was preferred tol-serine by 3Ankistrodesmus strains. In the dark, growth was only obtained withC. vulgaris strain “Delft”, and only on a few of thel-amino acids,l-leucine in particular.