Corpus ID: 33683716

Sources and mechanisms of inorganic carbon transport for coral calcification and photosynthesis.

@article{Furla2000SourcesAM,
  title={Sources and mechanisms of inorganic carbon transport for coral calcification and photosynthesis.},
  author={Paola Furla and I Galgani and Isabelle Durand and Denis Allemand},
  journal={The Journal of experimental biology},
  year={2000},
  volume={203 Pt 22},
  pages={
          3445-57
        }
}
The sources and mechanisms of inorganic carbon transport for scleractinian coral calcification and photosynthesis were studied using a double labelling technique with H(14)CO(3) and (45)Ca. Clones of Stylophora pistillata that had developed into microcolonies were examined. Compartmental and pharmacological analyses of the distribution of(45)Ca and H(14)CO(3) in the coelenteron, tissues and skeleton were performed in dark or light conditions or in the presence of various seawater HCO(3… Expand
Microsensor study of photosynthesis and calcification in the scleractinian coral, Galaxea fascicularis: active internal carbon cycle
TLDR
The reduction of photosynthesis and calcification by CA inhibition demonstrated that both processes need the enzyme for the supply of Ci, indicating that most of the photosynthetically fixed Ci can temporarily be supplied from internal sources. Expand
Imbalanced coral growth between organic tissue and carbonate skeleton caused by nutrient enrichment
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In order to characterize the process of calcification in scleractinian corals, a series of laboratory experiments were conducted using radioactive isotopes. Labelled calcium, bicarbonate and glucoseExpand
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TLDR
The results indicated that Ca-ATPase transports Ca2+ across the calicoblastic layer to the skeleton in exchange for H+. Expand
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TLDR
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BICARBONATE STIMULATION OF CALCIFICATION AND PHOTOSYNTHESIS IN TWO HERMATYPIC CORALS 1
TLDR
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Coral calcification responds to seawater acidification: a working hypothesis towards a physiological mechanism
TLDR
It is suggested that seawater acidification affected coral calcification by decreasing the availability of the CO32− substrate for calcification, but this decrease could also be attributed either to a decrease in extra- or intracellular pH or to a change in the buffering capacity of the medium, impairing supply ofCO32− from HCO3−. Expand
Photosynthate translocation increases in response to low seawater pH in a coral–dinoflagellate symbiosis
This study has examined the effect of low seawater pH values (induced by an increased CO 2 partial pressure) on the rates of photosynthesis, as well as on the carbon budget and carbon translocationExpand
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References

SHOWING 1-10 OF 52 REFERENCES
Involvement of H(+)-ATPase and carbonic anhydrase in inorganic carbon uptake for endosymbiont photosynthesis.
TLDR
Present data suggest that HCO(-)(3) absorption by ectodermal cells is carried out by H(+) secretion by H (+)-ATPase, resulting in the formation of carbonic acid in the surrounding seawater, which is quickly dehydrated into CO(2) by a membrane-bound CA. Expand
A physiological evaluation of carbon sources for calcification in the octocoral Leptogorgia virgulata (Lamarck).
TLDR
Results indicate that dissolved CO2 is the largest source of carbon used in the formation of calcitic sclerites, followed by HCO3- from dissolved inorganic carbon in L. virgulata. Expand
Calcification does not stimulate photosynthesis in the zooxanthellate scleractinian coral Stylophora pistillata
TLDR
It is suggested that calcification is not a significant source of photosynthetic CO 2 and that photosynthesis stimulates calcification rather than the opposite. Expand
Photosynthesis and Calcification at Cellular, Organismal and Community Levels in Coral Reefs: A Review on Interactions and Control by Carbonate Chemistry
SYNOPSIS. Photosynthesis and calcification in zooxanthellate scleractinian corals and coral reefs are reviewed at several scales: cellular (pathways and transport mechanisms of inorganic carbon andExpand
Evidence for an inorganic carbon-concentrating mechanism in the symbiotic dinoflagellate Symbiodinium sp.
The presence of a carbon-concentrating mechanism in the symbiotic dinoflagellate Symbiodinium sp. was investigated. Its existence was postulated to explain how these algae fix inorganic carbon (C(i))Expand
Utilization of Inorganic Carbon by Ulva lactuca.
TLDR
It is suggested that, under ambient conditions, HCO(3) (-) is transported into cells at defined sites either via facilitated diffusion or active uptake, and that such transport is the basis for elevated internal [CO(2)] at the site of ribulose-1,5-bisphosphate carboxylase/oxygenase car boxylation. Expand
Inorganic carbon uptake for photosynthesis by the symbiotic coral-dinoflagellate association II. Mechanisms for bicarbonate uptake
Mechanisms of HCO3− uptake as a source of dissolved inorganic carbon (DIC) for photosynthesis by the intracellular symbiont, Symbiodinium sp. were studied using microcolonies of the coral GalaxeaExpand
Plasticity in the photosynthetic carbon metabolism of submersed aquatic macrophytes
TLDR
The physiological and biochemical adaptations that enable submersed aquatic macrophytes to manage constraints associated with photosynthesis under water are detailed, including their plasticity, which is seen in variable CO2 compensation points that indicate the photorespiratory (PR) state. Expand
A compartmental approach to the mechanism of calcification in hermatypic corals
TLDR
The various efflux protocols produced varying estimates of tissue Ca2+ levels and calcification rates and, thus, coral post-incubation processing has a profound impact on experimental interpretation. Expand
Induction of Inorganic Carbon Accumulation in the Unicellular Green Algae Scenedesmus obliquus and Chlamydomonas reinhardtii.
TLDR
It is suggested that the algae are dependent on intracellular CA, plasmamembrane bound ATPase, and de novo protein synthesis for DIC accumulation, and these components are more important than extracellular CA for the overall function of the DIC-accumulating mechanism. Expand
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