Colonial Ascidians with Prochlorophyte Symbionts: Evidence for Translocation of Metabolites from Alga to Host
We measured rates of incorporation of 14CO2 by two species of tropical colonial ascidians (Diplosoma sp. and Lissoclinum patella) symbiotically associated with the unicellular alga Prochloron. Colonies incubated in light for 1 h incorporated 4–5 times as much acid-stable 14C in the animal tissue as dark controls. We concluded that the animals took up photosynthate from their algal symbionts. Prochloron illuminated with 14CO2 in vitro liberated small amounts of acid-stable 14C compounds into the medium. Most of the 14C in the host was found in molecules of low molecular weight; label was also detected in lipid, nucleic acid and protein fractions.
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Document Type: Research Article
Publication date: 1981-10-01
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