Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Science. 2008 Apr 25;320(5875):481-3. doi: 10.1126/science.1153585.

Genomic plasticity and the diversity of polyploid plants.

Author information

  • 1School of Biological and Chemical Sciences, Queen Mary, University of London, London E1 4NS, UK. a.r.leitch@qmul.ac.uk

Abstract

Polyploidy, a change whereby the entire chromosome set is multiplied, arises through mitotic or meiotic misdivisions and frequently involves unreduced gametes and interspecific hybridization. The success of newly formed angiosperm polyploids is partly attributable to their highly plastic genome structure, as manifested by tolerance to changing chromosome numbers (aneuploidy and polyploidy), genome size, (retro)transposable element mobility, insertions, deletions, and epigenome restructuring. The ability to withstand large-scale changes, frequently within one or a few generations, is associated with a restructuring of the transcriptome, metabolome, and proteome and can result in an altered phenotype and ecology. Thus, polyploid-induced changes can generate individuals that are able to exploit new niches or to outcompete progenitor species. This process has been a major driving force behind the divergence of the angiosperms and their biodiversity.

PMID:
18436776
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Write to the Help Desk