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The genome of the mesopolyploid crop species Brassica rapa.
- Source :
-
Nature genetics [Nat Genet] 2011 Aug 28; Vol. 43 (10), pp. 1035-9. Date of Electronic Publication: 2011 Aug 28. - Publication Year :
- 2011
-
Abstract
- We report the annotation and analysis of the draft genome sequence of Brassica rapa accession Chiifu-401-42, a Chinese cabbage. We modeled 41,174 protein coding genes in the B. rapa genome, which has undergone genome triplication. We used Arabidopsis thaliana as an outgroup for investigating the consequences of genome triplication, such as structural and functional evolution. The extent of gene loss (fractionation) among triplicated genome segments varies, with one of the three copies consistently retaining a disproportionately large fraction of the genes expected to have been present in its ancestor. Variation in the number of members of gene families present in the genome may contribute to the remarkable morphological plasticity of Brassica species. The B. rapa genome sequence provides an important resource for studying the evolution of polyploid genomes and underpins the genetic improvement of Brassica oil and vegetable crops.
- Subjects :
- Arabidopsis genetics
Chromosomes, Artificial, Bacterial genetics
Chromosomes, Plant genetics
Contig Mapping
Evolution, Molecular
Gene Duplication
Genes, Plant
Molecular Sequence Annotation
Molecular Sequence Data
Phylogeny
Sequence Analysis, DNA
Brassica rapa genetics
Genome, Plant
Polyploidy
Subjects
Details
- Language :
- English
- ISSN :
- 1546-1718
- Volume :
- 43
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Nature genetics
- Publication Type :
- Academic Journal
- Accession number :
- 21873998
- Full Text :
- https://doi.org/10.1038/ng.919