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Phylogenomics and Morphological Reconstruction of Arcellinida Testate Amoebae Highlight Diversity of Microbial Eukaryotes in the Neoproterozoic
DJG. Lahr, A. Kosakyan, E. Lara, EAD. Mitchell, L. Morais, AL. Porfirio-Sousa, GM. Ribeiro, AK. Tice, T. Pánek, S. Kang, MW. Brown,
Jazyk angličtina Země Velká Británie
Typ dokumentu časopisecké články, práce podpořená grantem, Research Support, U.S. Gov't, Non-P.H.S.
NLK
Cell Press Free Archives
od 1995-01-01 do Před 1 rokem
Free Medical Journals
od 1995 do Před 1 rokem
- MeSH
- fylogeneze MeSH
- Lobosea klasifikace genetika MeSH
- protozoální geny MeSH
- zkameněliny anatomie a histologie MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Research Support, U.S. Gov't, Non-P.H.S. MeSH
Life was microbial for the majority of Earth's history, but as very few microbial lineages leave a fossil record, the Precambrian evolution of life remains shrouded in mystery. Shelled (testate) amoebae stand out as an exception with rich documented diversity in the Neoproterozoic as vase-shaped microfossils (VSMs). While there is general consensus that most of these can be attributed to the Arcellinida lineage in Amoebozoa, it is still unclear whether they can be used as key fossils for interpretation of early eukaryotic evolution. Here, we present a well-resolved phylogenomic reconstruction based on 250 genes, obtained using single-cell transcriptomic techniques from a representative selection of 19 Arcellinid testate amoeba taxa. The robust phylogenetic framework enables deeper interpretations of evolution in this lineage and demanded an updated classification of the group. Additionally, we performed reconstruction of ancestral morphologies, yielding hypothetical ancestors remarkably similar to existing Neoproterozoic VSMs. We demonstrate that major lineages of testate amoebae were already diversified before the Sturtian glaciation (720 mya), supporting the hypothesis that massive eukaryotic diversification took place in the early Neoproterozoic and congruent with the interpretation that VSM are arcellinid testate amoebae.
Botanical Garden of Neuchâtel Pertuis du Sault 58 2000 Neuchâtel Switzerland
Department of Biological Sciences Mississippi State University Starkville MS USA
Department of Biology and Ecology Faculty of Science University of Ostrava Czech Republic
Department of Zoology Institute of Biosciences University of São Paulo Brazil
Institute for Genomics Biocomputing and Biotechnology Mississippi State University Starkville MS USA
Real Jardín Botánico CSIC Plaza Murillo 2 ES 28014 Madrid Spain
Citace poskytuje Crossref.org
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- $a Lahr, Daniel J G $u Department of Zoology, Institute of Biosciences, University of São Paulo, Brazil. Electronic address: dlahr@ib.usp.br.
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