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Biosafety Information Resource
Record information and status
Record ID
103410
Status
Published
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
Title
Polyploidy and genome evolution in plants
Author
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
Language(s)
  • English
Publication date
2005
Subject
Summary, abstract or table of contents
Abstract:

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
Identifier
DOI 10.1016/j.pbi.2005.01.001
Publisher and its location
Elsevier
Rights
© 2005 Elsevier Ltd
Format
7 page PDF
Source
Current Opinion in Plant Biology
Keywords and any other relevant information
Citation: Current Opinion in Plant Biology 2005, 8:135-141

   
   
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