PMID: 6539911Jun 25, 1984Paper

Evolution of multicellular animals as deduced from 5S rRNA sequences: a possible early emergence of the Mesozoa

Nucleic Acids Research
T OhamaS Osawa

Abstract

The nucleotide sequences of 5S rRNA from a mesozoan Dicyema misakiense and three metazoan species, i.e., an acorn-worm Saccoglossus kowalevskii, a moss-animal Bugula neritina, and an octopus Octopus vulgaris have been determined. A phylogenic tree of multicellular animals has been constructed from 73 5S rRNA sequences available at present including those from the above four sequences. The tree suggests that the mesozoan is the most ancient multicellular animal identified so far, its emergence time being almost the same as that of flagellated or ciliated protozoans. The branching points of planarians and nematodes are a little later than that of the mesozoan but are clearly earlier than other metazoan groups including sponges and jellyfishes. Many metazoan groups seem to have diverged within a relatively short period.

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Citations

Dec 2, 2006·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·Hiroko AwataHiroshi Endoh
Feb 1, 1985·Proceedings of the National Academy of Sciences of the United States of America·H HoriS Osawa
Mar 1, 1986·Proceedings of the National Academy of Sciences of the United States of America·M L SoginJ H Gunderson
Feb 16, 2013·Science·Maximilian J Telford
Jan 1, 1985·Nucleic Acids Research·V A ErdmannR De Wachter
Oct 7, 2015·Current Biology : CB·Maximilian J TelfordHervé Philippe
Feb 20, 1999·Journal of Molecular Biology·K I WatanabeH Hori
Jun 29, 1991·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·P W HollandN A Williams
Mar 1, 1997·Journal of Morphology·Hidetaka FuruyaYutaka Koshida

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