Inferring Ancestry : Mitochondrial Origins and Other Deep Branches in the Eukaryote Tree of Life
There are ~12 supergroups of complex-celled organisms (eukaryotes), but relationships among them (including the root) remain elusive, so a dataset of 37 eukaryotic proteins of unknown importance is developed.
The eukaryotic tree of life from a global phylogenomic perspective.
- BiologyCold Spring Harbor perspectives in biology
The pros and cons of phylogenomics are discussed and the eukaryotic supergroups are reviewed in light of earlier work that laid the foundation for the current view of the tree, including the position of the root.
The Revised Classification of Eukaryotes
- BiologyThe Journal of eukaryotic microbiology
This revision of the classification of eukaryotes retains an emphasis on the protists and incorporates changes since 2005 that have resolved nodes and branches in phylogenetic trees.
The Naegleria genome: a free-living microbial eukaryote lends unique insights into core eukaryotic cell biology.
- BiologyResearch in microbiology
An Alternative Root for the Eukaryote Tree of Life
- BiologyCurrent Biology
Evolution of Rhizaria: new insights from phylogenomic analysis of uncultivated protists
- BiologyBMC Evolutionary Biology
This study provides new insights into the evolution of Rhizaria based on phylogenomic analyses of ESTs from three groups of previously under-sampled protists, and illustrates the potential of this method to elucidate the early evolution of eukaryotes by providing large amount of data for uncultivable free-living and parasitic protists.
Phylogenomics of Sterol Synthesis: Insights into the Origin, Evolution, and Diversity of a Key Eukaryotic Feature
- BiologyGenome biology and evolution
The hypothesis that the few bacteria that harbor homologs of the sterol pathway have likely acquired these via horizontal gene transfer from eukaryotes is supported, and a potential candidate for the elusive enzyme performing C-3 ketoreduction in land plants and probably in other eUKaryotic phyla is proposed.
Protist Evolution and Phylogeny
A new higher level classification of eukaryotes combining the results of microscopic and various ‘omics’ studies has been proposed, and important part of protist diversity has been uncovered by environmental DNA study.
Phylogeny and evolutionary perspective of Opisthokonta protists
The AAR gene seems to be exclusive of Excavata and Unikonts, whereas the lysA gene is present in several unrelated taxa within all major eukaryotic lineages, indicating a role for several lateral gene transfer (LGT) events.
SHOWING 1-10 OF 21 REFERENCES
Eukaryotic evolution, changes and challenges
The idea that some eukaryotes primitively lacked mitochondria and were true intermediates in the prokaryote-to-eukaryote transition was an exciting prospect, but the evolutionary gap between proKaryotes and eUKaryotes is now deeper, and the nature of the host that acquired the mitochondrion more obscure, than ever before.
Rooting the Eukaryote Tree by Using a Derived Gene Fusion
It is shown that all eukaryote groups ancestrally with two cilia (bikonts) are evolutionarily derived and the root lies between bIKonts and opisthokonts (animals, Fungi, Choanozoa).
Evolutionary position of breviate amoebae and the primary eukaryote divergence
- BiologyProceedings of the Royal Society B: Biological Sciences
It is shown that phylogenomics of phylogenetically ‘nomadic’ species can elucidate key questions in eukaryote evolution and establish Breviata as a deep-branching unikont, and remnants of mitochondria have been detected in all putatively deep-BRanching amitochondriate organisms.
Phylogenomics reveals a new ‘megagroup’ including most photosynthetic eukaryotes
- BiologyBiology Letters
This work investigates early evolution among the major eukaryotic supergroups using the broadest multigene dataset to date and provides strong support for the clustering of plants, chromalveolates, rhizarians, haptophytes and cryptomonads, thus linking nearly all photosynthetic lineages and raising the question of a possible unique origin of plastids.
Toward Resolving the Eukaryotic Tree: The Phylogenetic Positions of Jakobids and Cercozoans
- BiologyCurrent Biology
The phagotrophic origin of eukaryotes and phylogenetic classification of Protozoa.
- BiologyInternational journal of systematic and evolutionary microbiology
It is argued that the essentially autogenous origins of most eukaryotic cell properties (phagotrophy, endomembrane system including peroxisomes, cytoskeleton, nucleus, mitosis and sex) partially overlapped and were synergistic with the symbiogenetic origin of mitochondria from an alpha-proteobacterium.
The origin and diversification of eukaryotes: problems with molecular phylogenetics and molecular clock estimation
- BiologyPhilosophical Transactions of the Royal Society B: Biological Sciences
Estimating the divergence dates between the major eukaryote lineages using molecular analyses is even more difficult than phylogenetic estimation, and confidence intervals on inferred dates can be very large.
Evaluating Support for the Current Classification of Eukaryotic Diversity
- BiologyPLoS genetics
It is demonstrated that supergroup taxonomies are unstable and that support for groups varies tremendously, indicating that the current classification scheme of eukaryotes is likely premature.