High phosphate uptake requirements of the scleractinian coral Stylophora pistillata

2011 ◽  
Vol 214 (16) ◽  
pp. 2749-2754 ◽  
Author(s):  
C. Godinot ◽  
R. Grover ◽  
D. Allemand ◽  
C. Ferrier-Pages
Keyword(s):  
Scleractinian Coral ◽  
Phosphate Uptake ◽  
Stylophora Pistillata ◽  
High Phosphate

Calcium stimulation of phosphate absorption by annual legumes

1970 ◽  
Vol 21 (4) ◽  
pp. 601 ◽  
Author(s):  
AD Robson ◽  
DG Edwards ◽  
JF Loneragan
Keyword(s):  
Phosphate Uptake ◽  
Trifolium Subterraneum ◽  
Partial Explanation ◽  
Phosphate Absorption ◽  
Annual Legumes ◽  
Soil Solutions ◽  
Calcium Stimulation ◽  
Medicago Species ◽  
Absorption Sites ◽  
High Phosphate

At calcium and phosphate concentrations within ranges commonly encountered in soil solutions, increasing calcium concentration in flowing culture solutions markedly increased phosphate absorption by several annual legumes. Calcium increased phosphate uptake relatively more at low than at high phosphate concentration. The effect of calcium was greater for two Medicago species than for two cultivars of Trifolium subterraneum and is suggested as at least a partial explanation for the greater sensitivity of Medicago to soil acidity and its greater tolerance to soil alkalinity than Trifolium subterraneum. Pretreatment at different calcium levels had no effect on phosphate absorption, while transfer to solutions of different calcium levels caused an immediate response in phosphate uptake. These results indicate that calcium had a direct effect on phosphate absorption, rather than an indirect effect through root morphology or anatomy. It is suggested that calcium increased phosphate absorption by screening electronegative charges on the roots, thus increasing the accessibility of absorption sites to phosphate.

Organic matrix synthesis in the scleractinian coral stylophora pistillata: role in biomineralization and potential target of the organotin tributyltin

1998 ◽  
Vol 201 (13) ◽  
pp. 2001-2009 ◽  
Author(s):  
D Allemand ◽  
É Tambutté ◽  
JP Girard ◽  
J Jaubert
Keyword(s):  
Protein Synthesis ◽  
Aspartic Acid ◽  
Scleractinian Coral ◽  
Organic Matrix ◽  
Coral Skeleton ◽  
Matrix Proteins ◽  
Coral Tissue ◽  
Lag Phase ◽  
Acid Uptake ◽  
Stylophora Pistillata

The kinetics of organic matrix biosynthesis and incorporation into scleractinian coral skeleton was studied using microcolonies of Stylophora pistillata. [14C]Aspartic acid was used to label the organic matrix since this acidic amino acid can represent up to 50 mol % of organic matrix proteins. External aspartate was rapidly incorporated into tissue protein without any detectable lag phase, suggesting either a small intracellular pool of aspartic acid or a pool with a fast turn-over rate. The incorporation of 14C-labelled macromolecules into the skeleton was linear over time, after an initial delay of 20 min. Rates of calcification, measured by the incorporation of 45Ca into the skeleton, and of organic matrix biosynthesis and incorporation into the skeleton were constant. Inhibition of calcification by the Ca2+ channel inhibitor verapamil reduced the incorporation of organic matrix proteins into the skeleton. Similarly, organic matrix incorporation into the skeleton, but not protein synthesis for incorporation into the tissue compartment, was dependent on the state of polymerization of both actin and tubulin, as shown by the sensitivity of this process to cytochalasin B and colchicin. These drugs may inhibit exocytosis of organic matrix proteins into the subcalicoblastic space. Finally, inhibition of protein synthesis by emetin or cycloheximide and inhibition of N-glycosylation by tunicamycin reduced both the incorporation of macromolecules into the skeleton and the rate of calcification. This suggests that organic matrix biosynthesis and its migration towards the site of calcification may be a prerequisite step in the calcification process. On the basis of these results, we investigated the effects of tributyltin (TBT), a component of antifouling painting known to interfere with biomineralization processes. Our results have shown that this xenobiotic significantly inhibits protein synthesis and the subsequent incorporation of protein into coral skeleton. This effect was correlated with a reduction in the rate of calcification. Protein synthesis was shown to be the parameter most sensitive to TBT (IC50=0.2 micromol l-1), followed by aspartic acid uptake by coral tissue (IC50=0.6 micromol l-1), skeletogenesis (IC50=3 micromol l-1) and Ca2+ uptake by coral tissue (IC50=20 micromol l-1). These results suggest that the mode of action of TBT on calcification may be the inhibition of organic matrix biosynthesis.

Response of a scleractinian coral, Stylophora pistillata, to iron and nitrate enrichment

2001 ◽  
Vol 259 (2) ◽  
pp. 249-261 ◽  
Author(s):  
Christine Ferrier-Pagès ◽  
Vanessa Schoelzke ◽  
Jean Jaubert ◽  
Len Muscatine ◽  
Ove Hoegh-Guldberg
Keyword(s):  
Scleractinian Coral ◽  
Stylophora Pistillata

Observations of the tissue-skeleton interface in the scleractinian coral Stylophora pistillata

Coral Reefs ◽  
2007 ◽  
Vol 26 (3) ◽  
pp. 517-529 ◽  
Author(s):  
E. Tambutté ◽  
D. Allemand ◽  
D. Zoccola ◽  
A. Meibom ◽  
S. Lotto ◽  
...  
Keyword(s):  
Scleractinian Coral ◽  
Stylophora Pistillata

scholarly journals Photochemical response of the scleractinian coral Stylophora pistillata to some sunscreen ingredients

Coral Reefs ◽  
2018 ◽  
Vol 38 (1) ◽  
pp. 109-122 ◽  
Author(s):  
Jean-Pierre Fel ◽  
Catherine Lacherez ◽  
Alaa Bensetra ◽  
Sakina Mezzache ◽  
Eric Béraud ◽  
...  
Keyword(s):  
Scleractinian Coral ◽  
Stylophora Pistillata

Urea uptake by the scleractinian coral Stylophora pistillata

2006 ◽  
Vol 332 (2) ◽  
pp. 216-225 ◽  
Author(s):  
Renaud Grover ◽  
Jean-François Maguer ◽  
Denis Allemand ◽  
Christine Ferrier-Pagès
Keyword(s):  
Scleractinian Coral ◽  
Stylophora Pistillata ◽  
Urea Uptake

scholarly journals Nitrate uptake in the scleractinian coral Stylophora pistillata

2003 ◽  
Vol 48 (6) ◽  
pp. 2266-2274 ◽  
Author(s):  
Renaud Grover ◽  
Jean-François Maguer ◽  
Denis Allemand ◽  
Christine Ferrier-Pagés
Keyword(s):  
Scleractinian Coral ◽  
Nitrate Uptake ◽  
Stylophora Pistillata
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