Phylogeny of Opisthokonta and the evolution of multicellularity and complexity in Fungi and Metazoa

Mónica Medina, Allen G. Collins, John W. Taylor, James W. Valentine, Jere H. Lipps, Linda Amaral-Zettler, Mitchell L. Sogin

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

While early eukaryotic life must have been unicellular, multicellular lifeforms evolved multiple times from protistan ancestors in diverse eukaryotic lineages. The origins of multicellularity are of special interest because they require evolutionary transitions towards increased levels of complexity. We have generated new sequence data from the nuclear large subunit ribosomal DNA gene (LSU rDNA) and the SSU rDNA gene of several unicellular opisthokont protists – a nucleariid amoeba (Nuclearia simplex) and four choanoflagellates (Codosiga gracilis, Choanoeca perplexa, Proterospongia choanojuncta and Stephanoeca diplocostata) to provide the basis for re-examining relationships among several unicellular lineages and their multicellular relatives (animals and fungi). Our data indicate that: (1) choanoflagellates are a monophyletic rather than a paraphyletic assemblage that independently gave rise to animals and fungi as suggested by some authors and (2) the nucleariid filose amoebae are the likely sister group to Fungi. We also review published information regarding the origin of multicellularity in the opisthokonts.

Original languageEnglish (US)
Pages (from-to)203-211
Number of pages9
JournalInternational Journal of Astrobiology
Volume2
Issue number3
DOIs
StatePublished - Jan 1 2003

Fingerprint

Animalia
fungi
amoeba
animals
phylogeny
Amoeba
fungus
Codosiga
Proterospongia
genes
Stephanoeca
gene
animal
protist
ancestry
ribosomal DNA
deoxyribonucleic acid
DNA

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Physics and Astronomy (miscellaneous)
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)

Cite this

Medina, M., Collins, A. G., Taylor, J. W., Valentine, J. W., Lipps, J. H., Amaral-Zettler, L., & Sogin, M. L. (2003). Phylogeny of Opisthokonta and the evolution of multicellularity and complexity in Fungi and Metazoa. International Journal of Astrobiology, 2(3), 203-211. https://doi.org/10.1017/S1473550403001551
Medina, Mónica ; Collins, Allen G. ; Taylor, John W. ; Valentine, James W. ; Lipps, Jere H. ; Amaral-Zettler, Linda ; Sogin, Mitchell L. / Phylogeny of Opisthokonta and the evolution of multicellularity and complexity in Fungi and Metazoa. In: International Journal of Astrobiology. 2003 ; Vol. 2, No. 3. pp. 203-211.
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Phylogeny of Opisthokonta and the evolution of multicellularity and complexity in Fungi and Metazoa. / Medina, Mónica; Collins, Allen G.; Taylor, John W.; Valentine, James W.; Lipps, Jere H.; Amaral-Zettler, Linda; Sogin, Mitchell L.

In: International Journal of Astrobiology, Vol. 2, No. 3, 01.01.2003, p. 203-211.

Research output: Contribution to journalArticle

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