1887

Abstract

Previous experiments established that when the unicellular green alga NC64A is inoculated with two viruses, usually only one virus replicates in a single cell. That is, the viruses mutually exclude one another. In the current study, we explore the possibility that virus-induced host membrane depolarization, at least partially caused by a virus-encoded K channel (Kcv), is involved in this mutual exclusion. Two chlorella viruses, PBCV-1 and NY-2A, were chosen for the study because (i) they can be distinguished by real-time PCR and (ii) they exhibit differential sensitivity to Cs, a well-known K channel blocker. PBCV-1-induced host membrane depolarization, Kcv channel activity and plaque formation are only slightly affected by Cs, whereas all three NY-2A-induced events are strongly inhibited by Cs. The addition of one virus 5–15 min before the other results primarily in replication of the first virus. However, if virus NY-2A-induced membrane depolarization of the host is blocked by Cs, PBCV-1 is not excluded. We conclude that virus-induced membrane depolarization is at least partially responsible for the exclusion phenomenon.

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2009-08-01
2024-04-30
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References

  1. Chan S. H., Zhu Z., Van Etten J. L., Xu S. Y. 2004; Cloning of CviPII nicking and modification system from chlorella virus NYs-1 and application of Nt.CviPII in random DNA amplification. Nucleic Acids Res 32:6187–6199 [CrossRef]
    [Google Scholar]
  2. Chase T. E., Nelson J. A., Burbank D. E., Van Etten J. L. 1989; Mutual exclusion occurs in a chlorella-like green alga inoculated with two viruses. J Gen Virol 70:1829–1836 [CrossRef]
    [Google Scholar]
  3. Cherrier M. V., Kostyuchenko V. A., Xiao C., Bowman V. D., Battisti A. J., Yan X., Chipman P. R., Baker T. S., Van Etten J. L., Rossmann M. G. 2009; An icosahedral algal virus has a complex unique vertex decorated by a spike. Proc Natl Acad Sci U S A in press
    [Google Scholar]
  4. Delbrück M. 1945; Interference between bacterial viruses. III. The mutual exclusion effect and the depressor effect. J Bacteriol 50:151–170
    [Google Scholar]
  5. Dulbecco R. 1952; Mutual exclusion between related phages. J Bacteriol 63:209–217
    [Google Scholar]
  6. Frohns F., Käsmann A., Kramer D., Schäfer B., Mehmel M., Kang M., Van Etten J. L., Gazzarrini S., Moroni A., Thiel G. 2006; Potassium ion channels of chlorella viruses cause rapid depolarization of host cell during infection. J Virol 80:2437–2444 [CrossRef]
    [Google Scholar]
  7. Gazzarrini S., Kang M., Van Etten J. L., Tayefeh S., Kast S. M., DiFrancesco D., Thiel G., Moroni A. 2004; Long-distance interactions within the potassium channel pore are revealed by molecular diversity of viral proteins. J Biol Chem 279:28443–28449 [CrossRef]
    [Google Scholar]
  8. Hirsch-Kauffmann M., Pfenning-Yeh M., Ponta H., Herrlich P., Schweiger M. 1976; A virus-specified mechanism for the prevention of multiple infection – T7- and T3-mutual and superinfection exclusion. Mol Gen Genet 149:243–249 [CrossRef]
    [Google Scholar]
  9. Jansohn M. 2007 Gentechnische Methoden, 4. Auflage München: Elsevier;
    [Google Scholar]
  10. Kang M., Moroni A., Gazzarrini S., DiFrancesco D., Thiel G., Severino M., Van Etten J. L. 2004a; Small potassium ion channel protein encoded by chlorella viruses. Proc Natl Acad Sci U S A 101:5318–5324 [CrossRef]
    [Google Scholar]
  11. Kang M., Graves M., Mehmel M., Moroni A., Gazzarrini S., Thiel G., Gurnon J., Van Etten J. L. 2004b; Genetic diversity in chlorella viruses flanking kcv , a gene that encodes a potassium ion channel protein. Virology 326:150–159 [CrossRef]
    [Google Scholar]
  12. Li B. H., Bockrath R. 1993; Photolyase-dimer-DNA complexes and exclusion stimulation in Escherichia coli : depolarization of the plasma membrane. Mol Gen Genet 240:450–454
    [Google Scholar]
  13. Mehmel M., Rothermel M., Meckel T., Van Etten J. L., Moroni A., Thiel G. 2003; Possible function for virus encoded K+ channel Kcv in the replication of chlorella virus PBCV-1. FEBS Lett 552:7–11 [CrossRef]
    [Google Scholar]
  14. Meints R. H., Lee K., Burbank D. E., Van Etten J. L. 1984; Infection of a chlorella-like alga with the virus, PBCV-1: ultrastructure studies. Virology 138:341–346 [CrossRef]
    [Google Scholar]
  15. Meints R. H., Burbank D. E., Van Etten J. L., Lamport D. T. A. 1988; Properties of the chlorella receptor for the virus PBCV-1. Virology 164:15–21 [CrossRef]
    [Google Scholar]
  16. Neupärtl M., Meyer C., Woll I., Frohns F., Kang M., Van Etten J. L., Kramer D., Hertel B., Moroni A., Thiel G. 2008; Chlorella viruses evoke a rapid release of K+ from host cells during early phase of infection. Virology 372:340–348 [CrossRef]
    [Google Scholar]
  17. Onimatsu H., Suganuma K., Uenoyama S., Yamada T. 2006; C-terminal repetitive motifs in Vp130 present at the unique vertex of the Chlorovirus capsid are essential for binding to the host Chlorella cell wall. Virology 353:433–442 [CrossRef]
    [Google Scholar]
  18. Plugge B., Gazzarini S., Nelson M., Cerana R., Van Etten J. L., Derst C., DiFrancesco D., Moroni A., Thiel G. 2000; A potassium ion channel protein encoded by chlorella virus PBCV-1. Science 287:1641–1644 [CrossRef]
    [Google Scholar]
  19. Sambrook J., Fritsch E. F., Maniatis T. 1989 Molecular Cloning – a Laboratory Manual , 2nd edn. Cold Spring Harbor: Cold Spring Harbor Laboratory Press;
    [Google Scholar]
  20. Schuster A. M., Burbank D. E., Meister B., Skrdla M. P., Meints R. H., Hattman S., Swinton D., Van Etten J. L. 1986; Characterization of viruses infecting a eukaryotic chlorella-like green alga. Virology 150:170–177 [CrossRef]
    [Google Scholar]
  21. Snyder L. 1995; Phage-exclusion enzymes: a bonanza of biochemical and cell biology reagents?. Mol Microbiol 15:415–420 [CrossRef]
    [Google Scholar]
  22. Snyder L., McWilliams K. 1989; The rex genes of bacteriophage lambda can inhibit cell function without phage superinfection. Gene 81:17–24 [CrossRef]
    [Google Scholar]
  23. Van Etten J. L., Meints R. H., Burbank D. E., Kuczmarski D., Cuppels D. A., Lane L. C. 1981; Isolation and characterization of a virus from the intracellular green alga symbiotic with Hydra viridis . Virology 113:704–711 [CrossRef]
    [Google Scholar]
  24. Van Etten J. L., Burbank D. E., Xia Y., Meints R. H. 1983a; Growth cycle of a virus, PBCV-1, that infects chlorella-like algae. Virology 126:117–125 [CrossRef]
    [Google Scholar]
  25. Van Etten J. L., Burbank D. E., Kuczmarski D., Meints R. H. 1983b; Virus infection of culturable chlorella-like algae and development of a plaque assay. Science 219:994–996 [CrossRef]
    [Google Scholar]
  26. Van Etten J. L., Schuster A. M., Meints R. H. 1988; Viruses of eukaryotic chlorella-like algae. In Viruses of Fungi and Simple Eukaryotes pp 411–428Edited by Koltin Y., Leibowitz M. J. Boca Raton, FL: CRC Press;
    [Google Scholar]
  27. Xia Y., Burbank D. E., Van Etten J. L. 1986; Restriction endonuclease activity induced by NC-1A virus infection of a chlorella-like green alga. Nucleic Acids Res 14:6017–6030 [CrossRef]
    [Google Scholar]
  28. Xia Y., Burbank D. E., Uher L., Rabussay D., Van Etten J. L. 1987; IL-3A virus infection of a chlorella-like green alga induces a DNA restriction endonuclease with a novel sequence specificity. Nucleic Acids Res 15:6075–6090 [CrossRef]
    [Google Scholar]
  29. Xia Y., Morgan R., Schildkraut I., Van Etten J. L. 1988; A site-specific single strand endonuclease activity induced by NYs-1 virus infection of a chlorella-like green alga. Nucleic Acids Res 16:9477–9487 [CrossRef]
    [Google Scholar]
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