Photosynthesis in marine macroalgae: evidence for carbon limitation

G. P. Holbrook, S. Beer, W. E. Spencer, J. B. Reiskind, J. S. Davis, G. Bowes

Research output: Contribution to journalArticlepeer-review


Photosynthetic measurements for Cladophoropsis membranacea (Chlorophyta), Dilophus guineensis, Turbinaria turbinata and Lobophora variegata (Phaeophyta), and Laurencia papillosa (Rhodophyta), taken directly from their marine habitat, showed that only Cladophoropsis was saturated at seawater inorganic carbon levels (2.5 mM). The photosynthetic K0.5 values for inorganic carbon ranged from 1.1-3.2 mM. The bicarbonate concentration in seawater is insufficient to overcome O2 inhibition effects on photosynthesis, unless the macroalga has some from of CO2 concentrating system, based on bicarbonate uptake or C4 acid metabolism. -from Authors

Original languageEnglish
Pages (from-to)577-582
Number of pages6
JournalCanadian Journal of Botany
Issue number3
StatePublished - 1988
Externally publishedYes


Dive into the research topics of 'Photosynthesis in marine macroalgae: evidence for carbon limitation'. Together they form a unique fingerprint.

Cite this