1887

Abstract

In cyanobacteria of the genus , there are three length variants of , the gene that encodes the outer protein of the gas vesicle. Sequence analyses indicated that the three allelic variants of differ principally in the presence or absence of a 99 nt and a 213 nt section. Strains with the new variant, , which encodes a 28 kDa form of GvpC, produce gas vesicles that collapse at the relatively low critical pressure ( ) of 061–075 MPa. The authors have identified 12 classes of genotypes that differ in the number and arrangement of alternating genes and in the presence of Ω, a fragment of . The gene was found to be the most common variant of amongst 71 strains of isolated from Nordic lakes: 34 strains contained only ; 22 strains, which possessed only the shorter gene, produced gas vesicles with a higher of 076–091 MPa; and 15 strains, which possessed both and , also produced the stronger gas vesicles. Genotypes with only the genes were more common amongst green strains (33 out of 38) than red strains (one out of 33). It is suggested that there is competition between the strains producing the two types of gas vesicles, with the stronger forms favoured in lakes deeper than 60 m, in which the combination of cell turgor pressure and hydrostatic pressure can collapse the weaker gas vesicles. The fact that none of the Nordic lakes are deeper than 67 m would explain the absence of the -containing strains that produce even narrower gas vesicles of 10–12 MPa, which are common in the much deeper Lake Zürich.

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2000-08-01
2024-04-19
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References

  1. Anagnostides K., Komàrek J. 1988; Modern approaches to the classification system of cyanophytes. 3. Oscillatoriales. Arch Hydrobiol 80:327–472
    [Google Scholar]
  2. Beard S. J., Handley B. A., Hayes P. K., Walsby A. E. 1999; The diversity of gas vesicle genes in Planktothrix rubescens from Lake Zürich. Microbiology 145:2757–2768
    [Google Scholar]
  3. Bright D. I., Walsby A. E. 1999; The relationship between critical pressure and width of gas vesicles in isolates of Planktothrix rubescens from Lake Zürich. Microbiology 145:2769–2775
    [Google Scholar]
  4. Bright D. I., Walsby A. E. 2000; The daily integral of growth by Planktothrix rubescens calculated from growth rate in culture and irradiance in Lake Lake Zürich. New Phytol 146:301–316 [CrossRef]
    [Google Scholar]
  5. Damerval T., Houmard J., Guglielmi G., Csiszàr K., Tandeau de Marsac N. 1987; A developmentally regulated gvpABC operon is involved in the formation of gas vesicles in the cyanobacterium Calothrix 7601. Gene 54:83–92 [CrossRef]
    [Google Scholar]
  6. DasSarma S., Arora P., Lin F., Molinari E., Yin L. R.-S. 1994; Wild-type gas vesicle formation requires at least ten genes in the gvp gene cluster of Halobacterium halobium plasmid pNRC100. J Bacteriol 176:7646–7652
    [Google Scholar]
  7. Griffiths A. E. 1992 Gas vesicle proteins in cyanobacteria PhD thesis University of Bristol;
    [Google Scholar]
  8. Griffiths A. E., Walsby A. E., Hayes P. K. 1992; The homologies of gas vesicle proteins. J Gen Microbiol 138:1243–1250 [CrossRef]
    [Google Scholar]
  9. Hayes P. K., Powell R. S. 1995; The gvpA/C cluster of Anabaena flos-aquae has multiple copies of a gene encoding GvpA. Arch Microbiol 164:50–57 [CrossRef]
    [Google Scholar]
  10. Hayes P. K., Walsby A. E., Walker J. E. 1986; Complete amino acid sequence of cyanobacterial gas-vesicle protein indicates a 70-residue molecule that corresponds in size to the crystallographic unit cell. Biochem J 236:31–36
    [Google Scholar]
  11. Hayes P. K., Lazarus C. M., Bees A., Walker J. E., Walsby A. E. 1988; The protein encoded by gvpC is a minor component of gas vesicles isolated from the cyanobacteria Anabaena flos-aquae and Microcystis sp. Mol Microbiol 2:545–552 [CrossRef]
    [Google Scholar]
  12. Hayes P. K., Buchholz B., Walsby A. E. 1992; Gas vesicles are strengthened by the outer-surface protein, GvpC. Arch Microbiol 157:229–234 [CrossRef]
    [Google Scholar]
  13. Offner S., Wanner G., Pfeifer F. 1996; Functional studies of the gvpACNO operon of Halobacterium salinarium reveal that the GvpC protein shapes gas vesicles. J Bacteriol 178:2071–2078
    [Google Scholar]
  14. Rippka R. 1988; Isolation and purification of cyanobacteria. Methods Enzymol 167:3–27
    [Google Scholar]
  15. Skulberg O. M., Skulberg R. 1985; Planktic species of Oscillatoria (Cyanophyceae) from Norway. Characterization and classification. Arch Hydrobiol Suppl 71:157–174
    [Google Scholar]
  16. Skulberg R., Skulberg O. M. 1990 Research with Algal Cultures – NIVA’s Culture Collection of Algae Oslo: Norsk Institutt for Vannforskning;ISBN 82–577–1743–6
    [Google Scholar]
  17. Tandeau de Marsac N., Mazel D., Bryant D. A., Houmard J. 1985; Molecular cloning and nucleotide sequence of a developmentally regulated gene from the cyanobacterium Calothrix PCC 7601: a gas vesicle protein gene. Nucleic Acids Res 13:7223–7236 [CrossRef]
    [Google Scholar]
  18. Utkilen H. C., Skulberg O. M., Walsby A. E. 1985; Buoyancy regulation and chromatic adaptation in planktonic Oscillatoria species: alternative strategies for optimising light absorption in stratified lakes. Arch Hydrobiol 104:407–417
    [Google Scholar]
  19. Walker J. E., Walsby A. E. 1983; Molecular weight of gas-vesicle protein from the planktonic cyanobacterium Anabaena flos-aquae and implications for structure of the vesicle. Biochem J 209:809–815
    [Google Scholar]
  20. Walsby A. E. 1973; A portable apparatus for measuring relative gas vacuolation, the strength of gas vacuoles, and turgor pressure in planktonic blue-green algae and bacteria. Limnol Oceanogr 18:653–658 [CrossRef]
    [Google Scholar]
  21. Walsby A. E. 1981; Cyanobacteria: planktonic gas-vacuolate forms. In The Prokaryotes pp. 224–235Edited by Starr M., Stolp H., Trüper H., Balows A., Schlegel H. G. New York: Springer;
    [Google Scholar]
  22. Walsby A. E. 1994; Gas vesicles. Microbiol Rev 58:94–114
    [Google Scholar]
  23. Walsby A. E., Bleything A. 1988; The dimensions of cyanobacterial gas vesicles in relation to their efficiency in providing buoyancy and withstanding pressure. J Gen Microbiol 134:2635–2645
    [Google Scholar]
  24. Walsby A. E., Hayes P. K. 1988; The minor cyanobacterial gas vesicle protein, GVPc, is attached to the outer surface of the gas vesicle. J Gen Microbiol 134:2647–2657
    [Google Scholar]
  25. Walsby A. E., Avery A., Schanz F. 1998; The critical pressures of gas vesicles in Planktothrix rubescens in relation to the depth of winter mixing in Lake Zürich, Switzerland. J Plankton Res 20:1357–1375 [CrossRef]
    [Google Scholar]
  26. Walsby A. E., Beard S. J., Hayes P. K. 1999; The natural selection of gas vesicles. In The Phototrophic Prokaryotes pp. 633–646Edited by Peschek G., Löffelhardt W., Schmetterer G. Dordrecht: Kluwer Academic;
    [Google Scholar]
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