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. 2014 Jan 23;505(7484):546-9.
doi: 10.1038/nature12817. Epub 2013 Dec 18.

The genome of the recently domesticated crop plant sugar beet (Beta vulgaris)

Juliane C Dohm  1 , André E Minoche  1 , Daniela Holtgräwe  2 , Salvador Capella-Gutiérrez  3 , Falk Zakrzewski  4 , Hakim Tafer  5 , Oliver Rupp  2 , Thomas Rosleff Sörensen  2 , Ralf Stracke  2 , Richard Reinhardt  6 , Alexander Goesmann  2 , Thomas Kraft  7 , Britta Schulz  8 , Peter F Stadler  5 , Thomas Schmidt  4 , Toni Gabaldón  9 , Hans Lehrach  10 , Bernd Weisshaar  2 , Heinz Himmelbauer  11
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The genome of the recently domesticated crop plant sugar beet (Beta vulgaris)

Juliane C Dohm et al. Nature. .

Abstract

Sugar beet (Beta vulgaris ssp. vulgaris) is an important crop of temperate climates which provides nearly 30% of the world's annual sugar production and is a source for bioethanol and animal feed. The species belongs to the order of Caryophylalles, is diploid with 2n = 18 chromosomes, has an estimated genome size of 714-758 megabases and shares an ancient genome triplication with other eudicot plants. Leafy beets have been cultivated since Roman times, but sugar beet is one of the most recently domesticated crops. It arose in the late eighteenth century when lines accumulating sugar in the storage root were selected from crosses made with chard and fodder beet. Here we present a reference genome sequence for sugar beet as the first non-rosid, non-asterid eudicot genome, advancing comparative genomics and phylogenetic reconstructions. The genome sequence comprises 567 megabases, of which 85% could be assigned to chromosomes. The assembly covers a large proportion of the repetitive sequence content that was estimated to be 63%. We predicted 27,421 protein-coding genes supported by transcript data and annotated them on the basis of sequence homology. Phylogenetic analyses provided evidence for the separation of Caryophyllales before the split of asterids and rosids, and revealed lineage-specific gene family expansions and losses. We sequenced spinach (Spinacia oleracea), another Caryophyllales species, and validated features that separate this clade from rosids and asterids. Intraspecific genomic variation was analysed based on the genome sequences of sea beet (Beta vulgaris ssp. maritima; progenitor of all beet crops) and four additional sugar beet accessions. We identified seven million variant positions in the reference genome, and also large regions of low variability, indicating artificial selection. The sugar beet genome sequence enables the identification of genes affecting agronomically relevant traits, supports molecular breeding and maximizes the plant's potential in energy biotechnology.

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References

    1. Genome Res. 2002 Aug;12(8):1269-76 - PubMed
    1. Gigascience. 2012 Dec 27;1(1):18 - PubMed
    1. J Mol Evol. 2004 Jan;58(1):40-53 - PubMed
    1. Mol Cells. 2012 Apr;33(4):385-92 - PubMed
    1. Nucleic Acids Res. 1999 Jan 15;27(2):573-80 - PubMed

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