Cyclic adenosine-3': 5'-mono phosphate: Production and extracellular release from green and blue-green algae

Cellular and extracellular levels of cAMP were analyzed in the blue-green algae Microcystis aeruginosa, Anabaena flos-aquae, and Synechococcus leopoliensis and the green algae Chlorella pyrenoidosa, Cosmarium botrytis, Pandorina morum, Scenedes-mus communis, and Pediastrum biradiatum. On the basis of chromatographic analyses, and several biochemical assays, each alga produced cAMP and released it into the medium. Cellular cAMP (92–394 pmol g^?1) and extracellular cAMP (8–440 pmol liter^?1) varied greatly among species.