articleThe Plant CellJul 1, 2004BRONZE OA

Widespread Paleopolyploidy in Model Plant Species Inferred from Age Distributions of Duplicate Genes[W]

GBGuillaume BlancKHKenneth H. Wolfe

Centre National de la Recherche Scientifique · Trinity College Dublin

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Abstract

Abstract It is often anticipated that many of today's diploid plant species are in fact paleopolyploids. Given that an ancient large-scale duplication will result in an excess of relatively old duplicated genes with similar ages, we analyzed the timing of duplication of pairs of paralogous genes in 14 model plant species. Using EST contigs (unigenes), we identified pairs of paralogous genes in each species and used the level of synonymous nucleotide substitution to estimate the relative ages of gene duplication. For nine of the investigated species (wheat [Triticum aestivum], maize [Zea mays], tetraploid cotton [Gossypium hirsutum], diploid cotton [G. arboretum], tomato [Lycopersicon esculentum], potato…

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Topics & keywords

Topics
Keywords
  • Biology
  • Gene duplication
  • Gene
  • Ploidy
  • Arabidopsis thaliana
  • Genetics
  • Lycopersicon
  • Gene family
UN Sustainable Development Goals
  • Life in Land
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