The Beta vulgaris Resource
Sugar beet genetics and genomics
The Sugar Beet Genome Project
Reference assembly "RefBeet"
The double haploid genotype KWS2320 was sequenced in a whole genome shotgun approach combining data sets generated on Illumina, Roche/454, and Sanger sequencing platforms resulting in the RefBeet assembly. We integrated existing resources of this genotype, such as large insert genomic libraries and genetic and physical maps, to achieve long-range continuity and chromosomal assignment of scaffolds.
Additional sugar beet lines, sea beet, spinach, and Beta patula
For comparative studies we sequenced additional sugar beet accessions, all double haploid, as well as sea beet, spinach, and Beta patula (Illumina sequencing data). Sea beet (Beta vulgaris ssp. maritima) is the closest wild relative of sugar beet, both are fully interbreedable. Beta patula is another wild beet closely related to sea beet and endemic to the Madeira archipelago. Spinach (Spinacia oleracea) represents another member of the Amaranthaceae family.
The initial gene prediction on RefBeet-1.1 was updated and improved on RefBeet-1.2. We optimized the gene prediction parameters for Caryophyllales taxa based on confirmed gene structures including data from PacBio full-transcript sequencing. The current gene sets are BeetSet-2 (sugar beet) and SpiSet-1 (spinach), MarSet-1 (sea beet), and PatSet-1 (B. patula).
For details on data analyses please refer to Dohm et al. 2014, Nature and the Supplement. For gene predictions on RefBeet-1.2 and spinach please refer to Minoche et al. 2015, Genome Biol. Sea beet and B. patula assemblies and gene sets are described in Rodríguez Del Río et al. 2019, Plant J.
ContactHeinz Himmelbauer, Bernd Weisshaar, Juliane Dohm
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