Skip to main content
SpringerLink
Log in

Cytogenetics of triplet conjugation in Tetrahymena: Origin of haploid and triploid clones

  • Published:
Chromosoma Aims and scope Submit manuscript

Abstract

Triplet conjugation occurs frequently when three different mating types of T. thermophila are mixed under appropriate conditions. Genetic studies show that fertilization is usually tripolar, with each conjugant contributing a pronucleus to one mate and receiving a pronucleus from the other. Triplets are less common and less stable when only two mating types are mixed, and nuclear exchange is not always reciprocal. Some conjugants contribute a pronucleus but do not receive one in return. Others receive two pronuclei instead of one. Such triplets chracteristically yield one haploid, one diploid and one triploid exconjugant, all of which are able to establish vigorous clones.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Allen, S.L.: Cytogenetics of genomic exclusion in Tetrahymena. Genetics 55, 797–822 (1967)

    Google Scholar 

  • Chen, T.T.: Conjugation in Paramecium bursaria. I. Conjugation of three animals. J. Morph. 78, 353–395 (1946)

    Google Scholar 

  • Corliss, J.O.: Le cycle autogamique de Tetrahymena rostrata. C. R. Acad. Sci. (Paris) 235, 399–402 (1952)

    Google Scholar 

  • Maupas, E.: Le rejeunissement karyogamique chez les ciliés. Arch. Zool. exp. gén., 2ième ser. 7, 149–519 (1889)

    Google Scholar 

  • Nanney, D.L.: Nucleocytoplasmic interaction during conjugation in Tetrahymena. Biol. Bull. 105, 133–148 (1953)

    Google Scholar 

  • Nanney, D.L., Dubert, J.M.: The genetics of the H serotype system in variety 1 of Tetrahymena pyriformis. Genetics 45, 1335–1349 (1960)

    Google Scholar 

  • Nanney, D.L., McCoy, J.W.: Characterization of the species of the Tetrahymena pyriformis complex. Trans. Amer. micr. Soc. 95, 664–682 (1976)

    Google Scholar 

  • Nanney, D. L., Meyer, E.B.: Traumatic induction of early maturity in Tetrahymena. Genetics (in press, 1977)

  • Nanney, D.L., Nagel, M.J.: Nuclear misbehavior in an aberrant inbred Tetrahymena. J. Protozool. 11, 465–473 (1964)

    Google Scholar 

  • Ray, C. Jr.: Meiosis and nuclear behavior in Tetrahymena pyriformis. J. Protozool. 3, 88–96 (1956)

    Google Scholar 

  • Sonneborn, T.M.: Methods in the general biology and genetics of Paramecium aurelia. J. exp. Zool. 113, 87–148 (1950)

    Google Scholar 

  • Weisz, P.B.: Multiconjugation in Blepharisma. Biol. Bull. 98, 242–246 (1950)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Genetics and Development, University of Illinois, 61801, Urbana, Illinois, USA

    Rosa Maria Preparata & David L. Nanney

Authors
  1. Rosa Maria Preparata
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. David L. Nanney
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Preparata, R.M., Nanney, D.L. Cytogenetics of triplet conjugation in Tetrahymena: Origin of haploid and triploid clones. Chromosoma 60, 49–57 (1977). https://doi.org/10.1007/BF00330410

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00330410

Keywords

Search

Navigation