Sequencing of the sea lamprey (Petromyzon marinus) genome provides insights into vertebrate evolution
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Open Access
- 24 February 2013
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Genetics
- Vol. 45 (4), 415-421
- https://doi.org/10.1038/ng.2568
Abstract
Jeramiah Smith, Weiming Li and colleagues report the whole-genome sequence of the sea lamprey, Petromyzon marinus, representing a vertebrate lineage diverged from humans ~500 million years ago. Their analyses define key evolutionary events in vertebrate lineages and provide evidence for two whole-genome duplication events occurring before the divergence of the ancestral lamprey and jawed vertebrate (gnathostome) lineages. Lampreys are representatives of an ancient vertebrate lineage that diverged from our own ∼500 million years ago. By virtue of this deeply shared ancestry, the sea lamprey (P. marinus) genome is uniquely poised to provide insight into the ancestry of vertebrate genomes and the underlying principles of vertebrate biology. Here, we present the first lamprey whole-genome sequence and assembly. We note challenges faced owing to its high content of repetitive elements and GC bases, as well as the absence of broad-scale sequence information from closely related species. Analyses of the assembly indicate that two whole-genome duplications likely occurred before the divergence of ancestral lamprey and gnathostome lineages. Moreover, the results help define key evolutionary events within vertebrate lineages, including the origin of myelin-associated proteins and the development of appendages. The lamprey genome provides an important resource for reconstructing vertebrate origins and the evolutionary events that have shaped the genomes of extant organisms.Keywords
This publication has 57 references indexed in Scilit:
- Genetic Consequences of Programmed Genome RearrangementCurrent Biology, 2012
- Nrg1/ErbB signaling networks in Schwann cell development and myelinationSeminars in Cell & Developmental Biology, 2010
- The genome of a songbirdNature, 2010
- Evolution of adaptive immune recognition in jawless vertebratesSeminars in Immunology, 2010
- The genome of the blood fluke Schistosoma mansoniNature, 2009
- The Schistosoma japonicum genome reveals features of host–parasite interplayNature, 2009
- Dual nature of the adaptive immune system in lampreysNature, 2009
- Genome analysis of the platypus reveals unique signatures of evolutionNature, 2008
- Sequence and comparative analysis of the chicken genome provide unique perspectives on vertebrate evolutionNature, 2004
- Initial sequencing and comparative analysis of the mouse genomeNature, 2002