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Polyploidy and Genome Evolution

Polyploidy and Genome Evolution by Pamela S. Soltis
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Polyploidy – whole-genome duplication (WGD) – is a fundamental driver of biodiversity with significant consequences for genome structure, organization, and evolution.  Once considered a speciation process common only in plants, polyploidy is now recognized to have played a major role in the structure, gene content, and evolution of most eukaryotic genomes.  In fact, the diversity of eukaryotes seems closely tied to multiple WGDs. Polyploidy generates new genomic interactions – initially resulting in “genomic and transcriptomic shock” – that must be resolved in a new polyploid lineage.  This process essentially acts as a “reset” button, resulting in genomic changes that may ultimately promote adaptive speciation.

 

This book brings together for the first time the conceptual and theoretical underpinnings of polyploid genome evolution with syntheses of the patterns and processes of genome evolution in diverse polyploid groups.  Because polyploidy is most common and best studied in plants, the book emphasizes plant models, but recent studies of vertebrates and fungi are providing fresh perspectives on factors that allow polyploid speciation and shape polyploid genomes.  The emerging paradigm is that polyploidy – through alterations in genome structure and gene regulation – generates genetic and phenotypic novelty that manifests itself at the chromosomal, physiological, and organismal levels, with long-term ecological and evolutionary consequences.

Springer Berlin Heidelberg; October 2012
415 pages; ISBN 9783642314421
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Title: Polyploidy and Genome Evolution
Author: Pamela S. Soltis; Douglas E. Soltis
 
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ISBNs
3642314422
9783642314414
9783642314421