Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comparative Study
. 1989 May;28(5):427-41.
doi: 10.1007/BF02603078.

Ciliate evolution: the ribosomal phylogenies of the tetrahymenine ciliates

R M Preparata  1 , E B Meyer, F P Preparata, E M Simon, C R Vossbrinck, D L Nanney
Affiliations
Comparative Study

Ciliate evolution: the ribosomal phylogenies of the tetrahymenine ciliates

R M Preparata et al. J Mol Evol. 1989 May.

Abstract

We have assembled and analyzed nucleotide sequences for several different rRNA components from tetrahymenine ciliates. These include previously published and some new 5S and 5.8S rRNAs for a total of 18 species. We also report sequences for some 30 species obtained by primer extension analysis of a region near the 5' end of the 23S rRNAs (region 580). Phylogenetic trees have been constructed for these species, utilizing heuristics (shifting ditypic site analysis) described in a companion paper. The trees based on these sequences are consistent with each other and with those based on longer sequences of the 17S rRNA. They show the tetrahymenines to consist of a number of distinctive clusters of species. The clusters (ribosets) are homogeneous with respect to certain life history characteristics, especially the mode of mating type determination, but are inhomogeneous with respect to some morphological and life history features, such as cyst formation and adaptations to parasitism or carnivory. Using the same molecular data, we also begin to explore the relationships of the tetrahymenines to some other ciliate taxa and to some other protists.

PubMed Disclaimer

References

    1. Science. 1967 Jan 20;155(3760):279-84 - PubMed
    1. EMBO J. 1986 Dec 20;5(13):3625-30 - PubMed
    1. Proc Natl Acad Sci U S A. 1986 Nov;83(22):8644-8 - PubMed
    1. Evolution. 1977 Mar;31(1):91-102 - PubMed
    1. Proc Natl Acad Sci U S A. 1986 Oct;83(19):7335-9 - PubMed

Publication types