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Record information and status
Record ID
Date of creation
2012-05-09 15:50 UTC (dina.abdelhakim@cbd.int)
Date of last update
2012-05-31 15:18 UTC (dina.abdelhakim@cbd.int)

General Information
Polyploidy and genome evolution in plants
Keith L Adams and Jonathan F Wendel
Author’s contact information
Jonathan F Wendel
Email: jfw@iastate.edu

Department of Ecology, Evolution, and Organismal Biology,
353 Bessey Hall, Iowa State University,
Ames, Iowa 50011, USA
  • English
Publication date
Summary, abstract or table of contents

Genome doubling (polyploidy) has been and continues to be a pervasive force in plant evolution. Modern plant genomes harbor evidence of multiple rounds of past polyploidization events, often followed by massive silencing and elimination of duplicated genes. Recent studies have refined our inferences of the number and timing of polyploidy events and the impact of these events on genome structure. Many polyploids experience extensive and rapid genomic alterations, some arising with the onset of polyploidy. Survivorship of duplicated genes are differential across gene classes, with some duplicate genes more prone to retention than others. Recent theory is now supported by evidence showing that genes that are retained in duplicate typically diversify in function or undergo subfunctionalization. Polyploidy has extensive effects on gene expression, with gene silencing accompanying polyploid formation and continuing over evolutionary time.
Thematic areas
  • Scientific and technical issues
    • Risk assessment
Additional Information
Type of resource
  • Article (journal / magazine / newspaper)
  • Report / Review / Fact sheet / Notes
DOI 10.1016/j.pbi.2005.01.001
Publisher and its location
© 2005 Elsevier Ltd
7 page PDF
Current Opinion in Plant Biology
Keywords and any other relevant information
Citation: Current Opinion in Plant Biology 2005, 8:135-141