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  Palaeohexaploid ancestry for Caryophyllales inferred from extensive gene-based physical and genetic mapping of the sugar beet genome (Beta vulgaris)

Dohm, J. C., Lange, C., Holtgräwe, D., Sörensen, T. R., Borchardt, D., Schulz, B., et al. (2012). Palaeohexaploid ancestry for Caryophyllales inferred from extensive gene-based physical and genetic mapping of the sugar beet genome (Beta vulgaris). The Plant Journal, 70(3), 528-540. doi:10.1111/j.1365-313X.2011.04898.x.

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 Creators:
Dohm, J. C.1, 2, Author              
Lange, C., Author
Holtgräwe, D., Author
Sörensen, T. R., Author
Borchardt, D., Author
Schulz, B., Author
Lehrach, H.1, Author              
Weisshaar, B., Author
Himmelbauer, H.1, 2, Author              
Affiliations:
1Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society, Berlin, Germany, ou_1433550              
2Centre for Genomic Regulation (CRG) and UPF, Barcelona, Spain, ou_persistent22              

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Free keywords: Angiosperms/genetics Base Sequence Beta vulgaris/*genetics *Chromosome Mapping Chromosomes, Artificial, Bacterial DNA, Plant/genetics *Evolution, Molecular Expressed Sequence Tags Genes, Plant/genetics Genetic Linkage Genetic Markers/genetics Genome, Plant/*genetics *Genomics Physical Chromosome Mapping Polymorphism, Single Nucleotide/genetics Polyploidy Sequence Analysis, DNA Synteny/genetics
 Abstract: Sugar beet (Beta vulgaris) is an important crop plant that accounts for 30% of the world's sugar production annually. The genus Beta is a distant relative of currently sequenced taxa within the core eudicotyledons; the genomic characterization of sugar beet is essential to make its genome accessible to molecular dissection. Here, we present comprehensive genomic information in genetic and physical maps that cover all nine chromosomes. Based on this information we identified the proposed ancestral linkage groups of rosids and asterids within the sugar beet genome. We generated an extended genetic map that comprises 1127 single nucleotide polymorphism markers prepared from expressed sequence tags and bacterial artificial chromosome (BAC) end sequences. To construct a genome-wide physical map, we hybridized gene-derived oligomer probes against two BAC libraries with 9.5-fold cumulative coverage of the 758 Mbp genome. More than 2500 probes and clones were integrated both in genetic maps and the physical data. The final physical map encompasses 535 chromosomally anchored contigs that contains 8361 probes and 22 815 BAC clones. By using the gene order established with the physical map, we detected regions of synteny between sugar beet (order Caryophyllales) and rosid species that involves 1400-2700 genes in the sequenced genomes of Arabidopsis, poplar, grapevine, and cacao. The data suggest that Caryophyllales share the palaeohexaploid ancestor proposed for rosids and asterids. Taken together, we here provide extensive molecular resources for sugar beet and enable future high-resolution trait mapping, gene identification, and cross-referencing to regions sequenced in other plant species.

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Language(s): eng - English
 Dates: 2012-02-142012-05
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1111/j.1365-313X.2011.04898.x
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Title: The Plant Journal
  Other : Plant J.
Source Genre: Journal
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Publ. Info: Oxford : Blackwell Science
Pages: - Volume / Issue: 70 (3) Sequence Number: - Start / End Page: 528 - 540 Identifier: ISSN: 0960-7412
CoNE: https://pure.mpg.de/cone/journals/resource/954925579095_1