An ancient genome duplication contributed to the abundance of metabolic genes in the moss Physcomitrella patens

Analyses of complete genomes and large collections of gene transcripts have shown that most, if not all seed plants have undergone one or more genome duplications in their evolutionary past. In this study, based on a large collection of EST sequences, we provide evidence that the haploid moss Physco...

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Bibliographic Details
Published in:BMC evolutionary biology 2007-08, Vol.7 (1), p.130-130
Main Authors: Rensing, Stefan A, Ick, Julia, Fawcett, Jeffrey A, Lang, Daniel, Zimmer, Andreas, Van de Peer, Yves, Reski, Ralf
Format: Article
Language:English
Subjects:
Bryopsida - genetics
Bryopsida - metabolism
Evaluation
Evolution
Evolution, Molecular
Gene amplification
Gene Duplication
Genetic aspects
Genome, Plant - genetics
Metabolic Networks and Pathways - genetics
Moss
Phylogeny
Plants
Polyploidy
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Summary:Analyses of complete genomes and large collections of gene transcripts have shown that most, if not all seed plants have undergone one or more genome duplications in their evolutionary past. In this study, based on a large collection of EST sequences, we provide evidence that the haploid moss Physcomitrella patens is a paleopolyploid as well. Based on the construction of linearized phylogenetic trees we infer the genome duplication to have occurred between 30 and 60 million years ago. Gene Ontology and pathway association of the duplicated genes in P. patens reveal different biases of gene retention compared with seed plants. Metabolic genes seem to have been retained in excess following the genome duplication in P. patens. This might, at least partly, explain the versatility of metabolism, as described for P. patens and other mosses, in comparison to other land plants.
ISSN:1471-2148
1471-2148
DOI:10.1186/1471-2148-7-130