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

Tinker, Nicholas A. ; Wight, Charlene P. ; Bekele, Wubishet A. ; Yan, Weikai ; Jellen, Eric N. ; Renhuldt, Nikos Tsardakas LU orcid ; Sirijovski, Nick LU ; Lux, Thomas ; Spannagl, Manuel and Mascher, Martin (2022) In Communications Biology 5(1).
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... (More)

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.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Communications Biology
volume
5
issue
1
article number
474
publisher
Nature Publishing Group
external identifiers
  • pmid:35585176
  • scopus:85130257960
ISSN
2399-3642
DOI
10.1038/s42003-022-03256-5
language
English
LU publication?
yes
id
064a7e24-596f-4827-8e6e-3725204a4443
date added to LUP
2022-12-29 11:26:21
date last changed
2024-04-18 17:24:06
@article{064a7e24-596f-4827-8e6e-3725204a4443,
  abstract     = {{<p>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.</p>}},
  author       = {{Tinker, Nicholas A. and Wight, Charlene P. and Bekele, Wubishet A. and Yan, Weikai and Jellen, Eric N. and Renhuldt, Nikos Tsardakas and Sirijovski, Nick and Lux, Thomas and Spannagl, Manuel and Mascher, Martin}},
  issn         = {{2399-3642}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Communications Biology}},
  title        = {{Genome analysis in Avena sativa reveals hidden breeding barriers and opportunities for oat improvement}},
  url          = {{http://dx.doi.org/10.1038/s42003-022-03256-5}},
  doi          = {{10.1038/s42003-022-03256-5}},
  volume       = {{5}},
  year         = {{2022}},
}