Euphytica

, Volume 209, Issue 1, pp 171–179

Genomics of the hop pseudo-autosomal regions

  • S. T. Hill
  • J. Coggins
  • A. Liston
  • D. Hendrix
  • J. A. Henning
Article

DOI: 10.1007/s10681-016-1655-9

Cite this article as:
Hill, S.T., Coggins, J., Liston, A. et al. Euphytica (2016) 209: 171. doi:10.1007/s10681-016-1655-9

Abstract

Hop is one of the few dioecious plants with dimorphic sex chromosomes. Because the entire Cannabaceae family is dioecious, hop and other members of this family are thought to have a relatively older sex chromosomal system than other plant species. Hop cones are only produced in female hops with or without fertilization. This has lead to most genomic research being directed toward female plants. The work we present provides genomic resources surrounding male plants. We have produced a draft genome for the male hop line USDA 21422M using a novel genome assembly method. In addition, we identified a 1.3 Mb set of scaffolds, which appear to be the male specific region based upon specificity with male hop accessions. This set includes a smaller high confidence total length 18 Kb set of scaffolds, which are supported by over 500 individuals, including the USDA world collection of hop varieties and two mapping populations, with genotyping by sequencing. We also have identified a portion of the Teamaker × 21422M linkage map to be associated with the pseudo-autosomal region (PAR). Within the genomic scaffolds, we identified a set of genes that are sex-linked and likely located in the PAR.

Keywords

Genomics Humulus Pseudo-autosomal region Sex chromosomes Sexual determining region 

Supplementary material

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Supplementary material 1 (PNG 132 kb)
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Supplementary material 2 (XLSX 85 kb)
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Supplementary material 3 (XLSX 87 kb)

Funding information

Funder NameGrant NumberFunding Note
Hop Research Council
    The Hop Breeding Company

      Copyright information

      © Springer Science+Business Media Dordrecht (outside the USA) 2016

      Authors and Affiliations

      1. 1.Electrical Engineering and Computer ScienceOregon State UniversityCorvallisUSA
      2. 2.Biochemistry and BiophysicsOregon State UniversityCorvallisUSA
      3. 3.Roy Farms IncMoxieUSA
      4. 4.Botany and Plant PathologyOregon State UniversityCorvallisUSA
      5. 5.USDA-ARS-Forage Seed & Cereal ResearchCorvallisUSA

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