| Sampling gene diversity across the supergroup Amoebozoa: large EST data sets from Acanthamoeba castellanii, Hartmannella vermiformis, Physarum polycephalum, Hyperamoeba dachnaya and Hyperamoeba sp. | |
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MedLine Citation:
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PMID: 18276190 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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From comparative analysis of EST data for five taxa within the eukaryotic supergroup Amoebozoa, including two free-living amoebae (Acanthamoeba castellanii, Hartmannella vermiformis) and three slime molds (Physarum polycephalum, Hyperamoeba dachnaya and Hyperamoeba sp.), we obtained new broad-range perspectives on the evolution and biosynthetic capacity of this assemblage. Together with genome sequences for the amoebozoans Dictyostelium discoideum and Entamoeba histolytica, and including partial genome sequence available for A. castellanii, we used the EST data to identify genes that appear to be exclusive to the supergroup, and to specific clades therein. Many of these genes are likely involved in cell-cell communication or differentiation. In examining on a broad scale a number of characters that previously have been considered in simpler cross-species comparisons, typically between Dictyostelium and Entamoeba, we find that Amoebozoa as a whole exhibits striking variation in the number and distribution of biosynthetic pathways, for example, ones for certain critical stress-response molecules, including trehalose and mannitol. Finally, we report additional compelling cases of lateral gene transfer within Amoebozoa, further emphasizing that although this process has influenced genome evolution in all examined amoebozoan taxa, it has done so to a variable extent. |
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Authors:
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Russell F Watkins; Michael W Gray |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-02-13 |
Journal Detail:
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Title: Protist Volume: 159 ISSN: 1434-4610 ISO Abbreviation: Protist Publication Date: 2008 Apr |
Date Detail:
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Created Date: 2008-03-31 Completed Date: 2008-06-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9806488 Medline TA: Protist Country: Germany |
Other Details:
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Languages: eng Pagination: 269-81 Citation Subset: IM |
Affiliation:
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Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada B3H 1X5. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acanthamoeba castellanii
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genetics Amoebida / classification, genetics*, physiology Animals Biodiversity* Carbohydrate Metabolism DNA, Protozoan / genetics Evolution, Molecular Expressed Sequence Tags* Gene Library Gene Transfer, Horizontal Genes, Protozoan* Genome, Protozoan Hartmannella / genetics Meiosis Physarum polycephalum / classification, genetics*, physiology Species Specificity |
| Chemical | |
Reg. No./Substance:
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0/DNA, Protozoan |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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