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Biol Bull 116: 461-471. (June 1959)
© 1959 Marine Biological Laboratory
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OBSERVATIONS ON THE GROWTH OF DUNALIELLA EUCHLORA IN CULTURE

JACK McLACHLAN 1 and CHARLES S. YENTSCH 1

1 Woods Hole Oceanographic Institution, Woods Hole, Mass.

1. Bacteria added to cultures of Dunaliella euchlora in the presence of nitrogenous organic matter stimulated the growth of the alga, and enhanced the synthesis of chlorophyll a.

2. It was not possible to obtain comparable concentrations of chlorophyll a by the addition of nitrate-nitrogen, although a comparable number of cells could be obtained.

3. If the bacteria obtained a "head-start" in the enriched cultures, growth of the alga was inhibited. This inhibition could be overcome by autoclaving the filtrate from the bacteria cultures.

4. Growth of the bacteria was not inhibited in the algal filtrate, nor was the growth of the alga inhibited in the algal filtrate.






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Copyright © 1959 by the Marine Biological Laboratory.