Genome analysis in Avena sativa reveals hidden breeding barriers and opportunities for oat improvement

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DOI

https://doi.org/10.1038/s42003-022-03256-5

Language of the publication
English
Date
2022-05-18
Type
Article
Author(s)
  • Tinker, Nicholas A.
  • Wight, Charlene P.
  • Bekele, Wubishet A.
  • Yan, Weikai
  • Jellen, Eric N.
  • Renhuldt, Nikos Tsardakas
  • Sirijovski, Nick
  • Lux, Thomas
  • Spannagl, Manuel
  • Mascher, Martin
Publisher
Nature Research

Abstract

Oat (Avena sativa L.) is an important and nutritious cereal crop, and there is a growing need to identify genes that contribute to improved oat varieties. Here we utilize a newly sequenced and annotated oat reference genome to locate and characterize quantitative trait loci (QTLs) affecting agronomic and grain-quality traits in five oat populations. We find strong and significant associations between the positions of candidate genes and QTL that affect heading date, as well as those that influence the concentrations of oil and β-glucan in the grain. We examine genome-wide recombination profiles to confirm the presence of a large, unbalanced translocation from chromosome 1 C to 1 A, and a possible inversion on chromosome 7D. Such chromosome rearrangements appear to be common in oat, where they cause pseudo-linkage and recombination suppression, affecting the segregation, localization, and deployment of QTLs in breeding programs.

Subject

  • Agriculture

Keywords

  • Oats--Breeding,
  • Crop improvement,
  • Genome analysis

Rights

Pagination

1-11

Peer review

Yes

Open access level

Gold

Identifiers

ISSN
2399-3642

Article

Journal title
Communications Biology
Journal volume
5
Article number
474
Accepted date
2022-03-10
Submitted date
2021-09-10

Citation(s)

Tinker, N. A., Wight, C. P., Bekele, W. A., Yan, W., Jellen, E. N., Renhuldt, N. T., Sirijovski, N., Lux, T., Spannagl, M., & Mascher, M. (2022). Genome analysis in Avena sativa reveals hidden breeding barriers and opportunities for oat improvement. Communincations Biology, 5, Article 474. https://doi.org/10.1038/s42003-022-03256-5

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Collection(s)

Crops and horticulture

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