Number of the records: 1  

Re-evaluating the green versus red signal in eukaryotes with secondary plastid of red algal origin

  1. 1.
    SYSNO ASEP0382165
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleRe-evaluating the green versus red signal in eukaryotes with secondary plastid of red algal origin
    Author(s) Burki, F. (CA)
    Flegontov, Pavel (BC-A) RID, ORCID
    Oborník, Miroslav (BC-A) RID, ORCID
    Cihlář, Jaromír (BC-A) SAI
    Pain, A. (SA)
    Lukeš, Julius (BC-A) RID, ORCID
    Keeling, P. J. (CA)
    Source TitleGenome Biology and Evolution. - : Oxford University Press - ISSN 1759-6653
    Roč. 4, č. 6 (2012), s. 738-747
    Number of pages10 s.
    Languageeng - English
    CountryGB - United Kingdom
    KeywordsEndosymbiotic gene transfer ; plastid evolution ; protist ; algae ; chromera
    Subject RIVEB - Genetics ; Molecular Biology
    Subject RIV - cooperationInstitute of Microbiology
    R&D ProjectsGAP506/12/1522 GA ČR - Czech Science Foundation (CSF)
    GBP501/12/G055 GA ČR - Czech Science Foundation (CSF)
    Institutional supportBC-A - RVO:60077344
    UT WOS000313211300001
    DOI https://doi.org/10.1093/gbe/evs049
    AnnotationThe transition from endosymbiont to organelle in eukaryotic cells involves the transfer of significant numbers of genes to the host genomes, a process known as endosymbiotic gene transfer (EGT). In the case of plastid organelles, EGTs have been shown to leave a footprint in the nuclear genome that can be indicative of ancient photosynthetic activity in present-day plastid-lacking organisms, or even hint at the existence of cryptic plastids. Here, we evaluated the impact of EGT on eukaryote genomes by reanalyzing the recently published EST dataset for Chromera velia, an interesting test case of a photosynthetic alga closely related to apicomplexan parasites. Previously, 513 genes were reported to originate from red and green algae in a 1:1 ratio. In contrast, by manually inspecting newly generated trees indicating putative algal ancestry, we recovered only 51 genes congruent with EGT, of which 23 and 9 were of red and green algal origin, respectively, whereas 19 were ambiguous regarding the algal provenance. Our approach also uncovered 109 genes that branched within a monocot angiosperm clade, most likely representing a contamination. We emphasize the lack of congruence and the subjectivity resulting from independent phylogenomic screens for EGT, which appear to call for extreme caution when drawing conclusions for major evolutionary events.
    WorkplaceBiology Centre (since 2006)
    ContactDana Hypšová, eje@eje.cz, Tel.: 387 775 214
    Year of Publishing2013
Number of the records: 1  

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