PHYSIOLOGICAL CHANGES OF SPONGIOCHLORIS TYPICA IN CULTURE2

The physiological changes in the green alga Spongiochloris typica were followed in liquid and agar for 8 weeks. Agar cultures changed drastically in lipid content, pigment composition, and heat and desiccation resistance. Changes in liquid cultures were gradual and not as extreme as those of agar cultures. However, rate and extent of dry-weight increments were similar in liquid and on agar. Liquid cultures are seemingly more stable in the physiological responses than are agar cultures where the environmental changes are conspicuous.