Endosymbiotic Gene Transfer in Tertiary Plastid-Containing Dinoflagellates
- Biology, Environmental ScienceEukaryotic Cell
Low level of detectable EGT in both dinoflagellate lineages is found, with only 9 genes and 90 genes of possible tertiary endosymbiotic origin in dinotoms and kareniaceans, respectively, suggesting that tertiary endsymbioses did not heavily impact the host din oflageLLate genomes.
Genome Evolution of a Tertiary Dinoflagellate Plastid
- BiologyPloS one
The genome of a dinoflagellate plastid of tertiary origin is characterized in Karlodinium veneficum in order to understand the evolutionary processes that have shaped the organelle since it was acquired as a symbiont cell.
Secondary and Tertiary Endosymbiosis and Kleptoplasty
Support is critically assessed for the hypothesis that sea slug photosynthesis is explained by massive horizontal gene transfer from the genome of the captured alga and the evidence for ‘footprints’ of photosynthetic pasts that remain even when the plastid is lost is assessed.
The endosymbiotic origin, diversification and fate of plastids
- BiologyPhilosophical Transactions of the Royal Society B: Biological Sciences
The many twists and turns of plastid evolution each represent major evolutionary transitions, and each offers a glimpse into how genomes evolve and how cells integrate through gene transfers and protein trafficking.
The number, speed, and impact of plastid endosymbioses in eukaryotic evolution.
- BiologyAnnual review of plant biology
Questions are examined about the number of endosymbiotic events needed to explain plastid diversity, whether the genetic contribution of the endOSymbionts to the host genome goes far beyond plastids-targeted genes, and whether organelle origins are best viewed as a singular transition involving one symbiont or as a gradual transition involving a long line of transient food/symbiont.
Tertiary Plastid Endosymbioses in Dinoflagellates
- Environmental Science, Biology
Details of the structures, evolutionary origins, and processes involved in these varied endosymbioses, including feeding mechanisms, endosYmbiotic gene transfer, and how nucleus-encoded proteins are targeted to each of these photosynthetic entities are discussed.
Genomic Insights into Plastid Evolution
- BiologyGenome biology and evolution
An overview of recent advances in understanding of the origin and spread of plastids from the perspective of comparative genomics is provided.
Did the peridinin plastid evolve through tertiary endosymbiosis? A hypothesis
The hypothesis is that the peridinin plastid evolved from a heterokont alga through tertiary endosymbiosis and its existence in heterotrophic protists, including parasitic lineages, are considered.
Role of horizontal gene transfer in the evolution of photosynthetic eukaryotes and their plastids.
- BiologyMethods in molecular biology
The proteome of many plastids has emerged as a mosaic of proteins from many sources, some from within the same cell (e.g., cytosolic genes or genes left over from the replacement of an earlier plastid), some from thePlastid of other algal lineages, and some from completely unrelated sources.
Integration of plastids with their hosts: Lessons learned from dinoflagellates
- Biology, Environmental ScienceProceedings of the National Academy of Sciences
The evolution of the fucoxanthin-containing dinoflagellates, which have adapted pathways retained from the ancestral peridinin plastid symbiosis for transcript processing in their current, serially acquired plastids are discussed.
SHOWING 1-10 OF 44 REFERENCES
Tertiary endosymbiosis driven genome evolution in dinoflagellate algae.
- BiologyMolecular biology and evolution
These results underline the remarkable ability of dinoflagellates to remodel their genomes through endosymbiosis and the considerable impact of this process on cell evolution.
Photosynthetic eukaryotes unite: endosymbiosis connects the dots.
- Environmental Science, BiologyBioEssays : news and reviews in molecular, cellular and developmental biology
Algal diversity is examined and endosymbiosis is shown to be a major force in algal evolution, with long-standing issues such as the chromalveolate hypothesis and the extent of endOSymbiotic gene transfer clarified.
Ribosomal RNA Analysis Indicates a Benthic Pennate Diatom Ancestry for the Endosymbionts of the Dinoflagellates Peridinium foliaceum and Peridinium balticum (Pyrrhophyta)
- Environmental Science, BiologyThe Journal of eukaryotic microbiology
This study has examined the phylogenetic origin of the P. foliaceum and P. Balticum heterokont endosymbionts through analaysis of their nuclear small subunit ribosomal RNA genes, and clearly demonstrates both endosYmbiont are pennate diatoms belonging to the family Bacillariaceae.
IDENTITY OF THE ENDOSYMBIONT OF PERIDINIUM FOLIACEUM (PYRROPHYTA): ANALYSIS OF THE rbcLS OPERON 1
- Biology, Environmental Science
The data strongly suggest that the P. foliaceum symbiont originated from a photosynthetic diatom, which would provide a free‐living model system with which the photosynthetics of other algal species could be compared.
Second- and third-hand chloroplasts in dinoflagellates: Phylogeny of oxygen-evolving enhancer 1 (PsbO) protein reveals replacement of a nuclear-encoded plastid gene by that of a haptophyte tertiary endosymbiont
- Biology, Environmental ScienceProceedings of the National Academy of Sciences of the United States of America
Phylogenetic analysis of the oxygen-evolving-enhancer (PsbO) proteins confirmed that in K. brevis the original peridinin-type plastid was replaced by that of a haptophyte, an alga which had previously acquired a red algal chloroplast by secondary endosymbiosis.
Translocation of proteins across the multiple membranes of complex plastids.
- BiologyBiochimica et biophysica acta
A single origin of the peridinin- and fucoxanthin-containing plastids in dinoflagellates through tertiary endosymbiosis
- Environmental ScienceProceedings of the National Academy of Sciences of the United States of America
It is postulated that the plastid of peridinin- and fucoxanthin-containing dinoflagellates originated from a haptophyte tertiary endosymbiosis that occurred before the split of these lineages.
The complete plastid genome sequence of the haptophyte Emiliania huxleyi: a comparison to other plastid genomes.
- BiologyDNA research : an international journal for rapid publication of reports on genes and genomes
These analyses suggest a close relationship of the E. huxleyi cpDNA to the chlorophyll c-containing plastids from heterokonts and cryptophytes, and they support the origin of the chromophyte plastid lineage from the red algal lineage.
Monophyly of Primary Photosynthetic Eukaryotes: Green Plants, Red Algae, and Glaucophytes
- BiologyCurrent Biology
Phylogenetic analyses indicate that the 19'Hexanoyloxy-fucoxanthin-containing dinoflagellates have tertiary plastids of haptophyte origin.
- Biology, Environmental ScienceMolecular biology and evolution
Analyses of SSU rDNA from the plastid and the nuclear genome of these dinoflagellate species indicate that they have acquired their plastids via endosymbiosis of a haptophyte, and distance, parsimony, and maximum-likelihood phylogenetic analyses of plastido rRNA gene sequences place the three species within the haptophical clade.