NDLI: Early vertebrate whole genome duplications were predated by a period of intense genome rearrangement.

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Early vertebrate whole genome duplications were predated by a period of intense genome rearrangement.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Hufton, Andrew L. Groth, Detlef Vingron, Martin Lehrach, Hans Poustka, Albert J. Panopoulou, Georgia
Description	Country affiliation: Germany Author Affiliation: Hufton AL ( Max Planck Institute for Molecular Genetics, 12169 Berlin, Germany.)
Abstract	Researchers, supported by data from polyploid plants, have suggested that whole genome duplication (WGD) may induce genomic instability and rearrangement, an idea which could have important implications for vertebrate evolution. Benefiting from the newly released amphioxus genome sequence (Branchiostoma floridae), an invertebrate that researchers have hoped is representative of the ancestral chordate genome, we have used gene proximity conservation to estimate rates of genome rearrangement throughout vertebrates and some of their invertebrate ancestors. We find that, while amphioxus remains the best single source of invertebrate information about the early chordate genome, its genome structure is not particularly well conserved and it cannot be considered a fossilization of the vertebrate preduplication genome. In agreement with previous reports, we identify two WGD events in early vertebrates and another in teleost fish. However, we find that the early vertebrate WGD events were not followed by increased rates of genome rearrangement. Indeed, we measure massive genome rearrangement prior to these WGD events. We propose that the vertebrate WGD events may have been symptoms of a preexisting predisposition toward genomic structural change.
File Format	HTM / HTML
ISSN	10889051
e-ISSN	15495469
DOI	10.1101/gr.080119.108
Journal	Genome Research
Issue Number	10
Volume Number	18
Language	English
Publisher	Cold Spring Harbor Laboratory Press
Publisher Date	2008-10-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Discipline Genetics Discipline Genomics Evolution, Molecular Gene Duplication Genome Animals Conserved Sequence Databases, Genetic Gene Rearrangement Models, Genetic Synteny Vertebrates Genetics Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Genetics Genetics (clinical)

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