The genome of the mesopolyploid crop species Brassica rapa

Xiaowu Wang, Hanzhong Wang, Jun Wang, Rifei Sun, Jian Wu, Shengyi Liu, Yinqi Bai, Jeong-Hwan Mun, Ian Bancroft, Feng Cheng, Sanwen Huang, Xixiang Li, Wei Hua, Junyi Wang, Xiyin Wang, Michael Freeling, J Chris Pires, Andrew H Paterson, Boulos Chalhoub, Bo WangAlice Hayward, Andrew G Sharpe, Beom-Seok Park, Bernd Weisshaar, Binghang Liu, Bo Li, Bo Liu, Chaobo Tong, Chi Song, Christopher Duran, Chunfang Peng, Chunyu Geng, Chushin Koh, Chuyu Lin, David Edwards, Desheng Mu, Di Shen, Eleni Soumpourou, Fei Li, Fiona Fraser, Gavin Conant, Gilles Lassalle, Graham J King, Guusje Bonnema, Haibao Tang, Haiping Wang, Harry Belcram, Heling Zhou, Hideki Hirakawa, Yan Wang, Brassica rapa Genome Sequencing Project Consortium

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)1035-1039
Number of pages5
JournalNature genetics
Issue number10
Publication statusPublished - Oct 2011


  • Phylogeny
  • Gene Duplication
  • Polyploidy
  • Brassica rapa
  • Contig Mapping
  • Chromosomes, Artificial, Bacterial
  • Sequence Analysis, DNA
  • Genome, Plant
  • Evolution, Molecular
  • Chromosomes, Plant
  • Molecular Sequence Annotation
  • Molecular Sequence Data
  • Genes, Plant
  • Arabidopsis

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