|Morpho-functionality of carbon metabolism in seaweeds|
Gómez, I.; Huovinen, P. (2012). Morpho-functionality of carbon metabolism in seaweeds, in: Wiencke, C. et al. (Ed.) Seaweed biology: Novel insights into ecophysiology, ecology and utilization. Ecological Studies, 219: pp. 25-46
In: Wiencke, C.; Bischof, K. (Ed.) (2012). Seaweed biology: Novel insights into ecophysiology, ecology and utilization. Ecological Studies, 219. Springer-Verlag: Berlin, Heidelberg. ISBN 978-3-642-28450-2. xiii, 510 pp., more
In: Heldmaier, G. et al. (Ed.) Ecological Studies. Springer: Heidelberg; Berlin. ISSN 0070-8356, more
Carbon; Metabolism; Seaweeds; Marine
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Seaweeds are photoautotrophs which dominate benthic marine ecosystems and like other aquatic algae show efficient adaptations to incorporate and process dissolved inorganic carbon. The carbon concentrating mechanisms (CCMs) widely found in seaweeds convert HCO3 - to CO2 enhancing the CO2 environment to RUBISCO, the central photosynthetic enzyme. As a collateral benefit, the high intracellular CO2 levels inhibit photorespiration. Seaweeds can be morphologically complex, and hence, carbon metabolism and its products are functionally integrated in growth patterns. For example, dark-independent carbon fixation pathways (LICF) and translocation along the thallus are relevant processes. As carbon metabolism is regulated by the interplay between environmental and endogenous forces, its involvement in adaptive mechanisms underlying, e.g., biogeographic patterns is being increasingly emphasized. Although there are still important areas that are poorly known, the database on carbon metabolism is a starting point to understand present and future responses of seaweeds to large-scale environmental shifts.