Structural investigations on the mucus from six species of coral

Abstract

The chemical composition of the mucus from three hard corals (Acropora formosa, Pachyseris speciosa and Fungia fungites) and three soft corals (Sarcophyton sp., Lemnalia sp., and Cespitularia sp.) collected on the Great Barrier Reef (1982–1985) was determined. Significant variation exists in the composition and structure of the six mucus samples, indicating the absence of a common structure for coral mucus. In all cases protein and/or carbohydrate polymers are the major components of the mucus, and lipids are present only in small amounts. The glycose composition varied between species, with fucose (F. fungites and Lemnalia sp.), arabinose (A. formosa), galactose (P. speciosa) and N-acetyl glucosamine (Sarcophyton sp.) being present in high concentrations. With the exception of Sarcophyton sp. and Lemnalia sp., all mucus samples were acidic and contained significant sulphate but no uronic or sialic acids. The amino acid composition of the mucus samples was not unusual, apart from A. formosa, which contained a high percentage of serine and threonine, and F. fungites, which had high levels of glutamic acid present.

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Literature cited

  1. Allen, A. (1983). Mucus — a protective secretion of complexity. Trends biochem. Sciences 8: 169–173

    Google Scholar 

  2. Benson, A. A., Muscatine, L. (1974). Wax in coral mucus: energy transfer from corals to reef fishes. Limnol. Oceanogr. 19: 810–814

    Google Scholar 

  3. Crossland, C. J., Barnes, D. J., Borowitzka, M. A. (1980a). Diurnal lipid and mucus production in the staghorn coral Acropora acuminata. Mar. Biol. 60: 81–90

    Google Scholar 

  4. Crossland, C. J., Barnes, D. J., Cox, T., Devereux, M. (1980b). Compartmentation and turnover of organic carbon in the staghorn coral Acropora formosa. Mar. Biol. 59: 181–187

    Google Scholar 

  5. Dubois, M., Gilles, K. A., Hamilton, J. K., Rebers, P. A., Smith, F. (1956). Colorimetric method for determination of sugars and related substances. Analyt. Chem. 28: 350–356

    Google Scholar 

  6. Ducklow, H. W., Mitchell, R. (1979). Composition of mucus released by coral reef coelenterates. Limnol. Oceanogr. 24: 706–714

    Google Scholar 

  7. Goreau, T. (1956). Histochemistry of mucopolysaccharide-like substances and alkaline phosphatase in Madreporaria. Nature, Lond. 177: 1029–1030

    Google Scholar 

  8. Hartree, E. F. (1972). Determination of protein: a modification of the Lowry method that gives a linear photometric response. Analyt. Biochem. 48: 422–427

    Google Scholar 

  9. Johannes, R. E. (1967). Ecology of organic aggregates in the vicinity of a coral reef. Limnol. Oceanogr. 12: 189–195

    Google Scholar 

  10. Krupp, D. A. (1982). The composition and production of the mucus of the solitary mushroom coral, Fungia scutaria (Lamarck). Ph. D. thesis, University of Hawaii

  11. Lewis, J. B., Price, W. S. (1976). Patterns of ciliary currents in Atlantic reef corals and their functional significance. J. Zool., Lond. 178: 77–89

    Google Scholar 

  12. Marcus, J., Thorhaug, A. (1982). Pacific versus Atlantic responses of the subtropical hermatypic coral Porites sp. to temperature and salinity effects. Proc. 4th int. Symp. coral Reefs 2: 15–20 [Gomez, E. D. et al. (eds.) Marine Sciences Center, University of the Philippines, Quezon City]

    Google Scholar 

  13. Meikle, P., Richards, G. N., Yellowlees, D. (1987). Structural characterisation of the oligosaccharide side chains from a glycoprotein isolated from the mucus of the coral Acropora formosa. J. biol. Chem. 262: 16941–16947

    Google Scholar 

  14. Molchanova, V. I., Ovodova, R. G., Ovodov, Y. S., Elkin, Y. H. (1985). Studies of the polysaccharide moiety of corallan, a glycoprotein from Pseudopteragorgia americana. Carbohydr. Res. 141: 289–293

    Google Scholar 

  15. Murty, V. L. N., Sarosiek, J., Slomiany, A., Slomiany, B. L. (1984). Effect of lipids and proteins on the viscosity of gastric mucus glycoprotein. Biochem. biophys. Res. Commun. 121: 521–529

    Google Scholar 

  16. Sarosiek, J., Slomiany, A., Takagi, A., Slomiany, B. L. (1984). Hydrogen ion diffusion in dog gastric mucus glycoprotein: effect of associated lipids and covalently bound fatty acids. Biochem. biophys. Res. Commun. 118: 523–531

    Google Scholar 

  17. Schuhmacher, H. (1977). Ability of fungiid corals to overcome sedimentation. Proc. 3rd int. Symp. coral Reefs 1: 503–510 [Taylor, D. L. (ed.) School of Marine and Atmospheric Sciences, University of Miami]

    Google Scholar 

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Correspondence to D. Yellowlees.

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Communicated by G. F. Humphrey, Sydney

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Meikle, P., Richards, G.N. & Yellowlees, D. Structural investigations on the mucus from six species of coral. Mar. Biol. 99, 187–193 (1988). https://doi.org/10.1007/BF00391980

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Keywords

  • Galactose
  • Glutamic Acid
  • Threonine
  • Sialic Acid
  • Amino Acid Composition