Dinoflagellate ribosomal RNA; an evolutionary relic? (original) (raw)

Summary

The apparent molecular weights of the rRNA subunits of the dinoflagellate_Peridinium cinctum_ fa.westii were determined by polyacrylamide gel electrophoresis to obtain an indication of its evolutionary status. The apparent molecular weights of the_Peridinium_ light and heavy rRNA subunits were 0.7 and 1.23 × 106 respectively. The light rRNA is therefore typically eukaryotic but the heavy rRNA has a significantly lower MW than previously reported for higher eukaryotes which range from 1.3 to 1.75 × 106 depending on their evolutionary position. Thus by this criterion_Peridinium_ is similar to red algae and may represent a eukaryotic stage, lower than fungi or green plants.

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Authors and Affiliations

1. Dept. of Plant Genetics, Weizmann Institute of Science, Rehovot, Israel
   J. Gressel & N. Cohen
2. Kinneret Limnological Laboratory, P.O.B. 345, Tiberias, Israel
   T. Berman

Authors

1. J. Gressel
2. T. Berman
3. N. Cohen

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Gressel, J., Berman, T. & Cohen, N. Dinoflagellate ribosomal RNA; an evolutionary relic?.J Mol Evol 5, 307–313 (1975). https://doi.org/10.1007/BF01732217

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• Received: 18 March 1975
• Issue date: December 1975
• DOI: https://doi.org/10.1007/BF01732217

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