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Horizontal gene transfer in eukaryotic evolution

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TLDR
The number of well-supported cases of transfer from both prokaryotes and eukaryotes, many with significant functional implications, is now expanding rapidly and major recent trends include the important role of HGT in adaptation to certain specialized niches and the highly variable impact of H GT in different lineages.
Abstract
Horizontal gene transfer (HGT; also known as lateral gene transfer) has had an important role in eukaryotic genome evolution, but its importance is often overshadowed by the greater prevalence and our more advanced understanding of gene transfer in prokaryotes. Recurrent endosymbioses and the generally poor sampling of most nuclear genes from diverse lineages have also complicated the search for transferred genes. Nevertheless, the number of well-supported cases of transfer from both prokaryotes and eukaryotes, many with significant functional implications, is now expanding rapidly. Major recent trends include the important role of HGT in adaptation to certain specialized niches and the highly variable impact of HGT in different lineages.

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The mitochondrial genome of an aquatic plant, Spirodela polyrhiza.

TL;DR: Although it contains a similar chloroplast DNA content and range of RNA editing as other monocots, it is void of nuclear insertions, active gene loss, and comprises large regions of sequences of unknown origin in non-coding regions, shedding new light on the early evolution of monocot mitochondrial genomes.
Journal ArticleDOI

Environment-dependent fitness gains can be driven by horizontal gene transfer of transporter-encoding genes

TL;DR: Evidence is provided that transporter HGT occurs between fungi, alters how fungi can acquire metabolites, and can drive gain in fitness, and a “transporter-gene acquisition ratchet” is proposed, where transporter repertoires are continually augmented by duplication, HGT, and differential loss.
Journal ArticleDOI

Ice-binding proteins and the 'domain of unknown function' 3494 family.

TL;DR: DUF3494 IBPs constitute today the most widespread of the known IBP families and can be found in different organisms including bacteria, yeasts and microalgae, supporting the hypothesis of horizontal transfer of its gene.
Journal ArticleDOI

Conservation of Plastid Sequences in the Plant Nuclear Genome for Millions of Years Facilitates Endosymbiotic Evolution

TL;DR: The results suggest that chloroplast genes transferred to the nucleus have in some cases several millions of years to acquire nuclear regulatory elements and become functional.
References
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Journal ArticleDOI

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Eric S. Lander, +248 more
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TL;DR: The results of an international collaboration to produce and make freely available a draft sequence of the human genome are reported and an initial analysis is presented, describing some of the insights that can be gleaned from the sequence.
Journal ArticleDOI

Lateral gene transfer and the nature of bacterial innovation

TL;DR: Unlike eukaryotes, which evolve principally through the modification of existing genetic information, bacteria have obtained a significant proportion of their genetic diversity through the acquisition of sequences from distantly related organisms.
Journal ArticleDOI

The Genome of the African Trypanosome Trypanosoma brucei

Matthew Berriman, +104 more
- 15 Jul 2005 - 
TL;DR: Comparisons of the cytoskeleton and endocytic trafficking systems of Trypanosoma brucei with those of humans and other eukaryotic organisms reveal major differences.
Journal ArticleDOI

Genome evolution in yeasts

TL;DR: Analysis of chromosome maps and genome redundancies reveal that the different yeast lineages have evolved through a marked interplay between several distinct molecular mechanisms, including tandem gene repeat formation, segmental duplication, a massive genome duplication and extensive gene loss.
Journal ArticleDOI

Phylogenetic Classification and the Universal Tree

TL;DR: Molecular phylogeneticists will have failed to find the “true tree,” not because their methods are inadequate or because they have chosen the wrong genes, but because the history of life cannot properly be represented as a tree.
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