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Pyramiding of scald resistance genes in four spring barley MAGIC populations

Hautsalo, Juho and Novakazi, Fluturë and Jalli, Marja and Göransson, Magnus and Manninen, Outi and Isolahti, Mika and Bergersen, Stein and Reitan, Lars and Krusell, Lene and Damsgård Robertsen, Charlotte and Orabi, Jihad and Jensen, Jens Due and Jahoor, Ahmed and Bengtsson, Therese and Veteläinen, Merja and Alsheikh, Muath (2021). Pyramiding of scald resistance genes in four spring barley MAGIC populations. TAG Theoretical and Applied Genetics. 134 , 3829–3843
[Research article]

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Abstract

Genome-Wide Association Studies (GWAS) of four Multi-parent Advanced Generation Inter-Cross (MAGIC) populations identified nine regions on chromosomes 1H, 3H, 4H, 5H, 6H and 7H associated with resistance against barley scald disease. Three of these regions are putatively novel resistance Quantitative Trait Loci (QTL). Barley scald is caused by Rhynchosporium commune, one of the most important barley leaf diseases that are prevalent in most barley-growing regions. Up to 40% yield losses can occur in susceptible barley cultivars. Four MAGIC populations were generated in a Nordic Public-Private Pre-breeding of spring barley project (PPP Barley) to introduce resistance to several important diseases. Here, these MAGIC populations consisting of six to eight founders each were tested for scald resistance in field trials in Finland and Iceland. Eight different model covariate combinations were compared for GWAS studies, and the models that deviated the least from the expected p-values were selected. For all QTL, candidate genes were identified that are predicted to be involved in pathogen defence. The MAGIC progenies contained new haplotypes of significant SNP-markers with high resistance levels. The lines with successfully pyramided resistance against scald and mildew and the significant markers are now distributed among Nordic plant breeders and will benefit development of disease-resistant cultivars.

Authors/Creators:Hautsalo, Juho and Novakazi, Fluturë and Jalli, Marja and Göransson, Magnus and Manninen, Outi and Isolahti, Mika and Bergersen, Stein and Reitan, Lars and Krusell, Lene and Damsgård Robertsen, Charlotte and Orabi, Jihad and Jensen, Jens Due and Jahoor, Ahmed and Bengtsson, Therese and Veteläinen, Merja and Alsheikh, Muath
Title:Pyramiding of scald resistance genes in four spring barley MAGIC populations
Series Name/Journal:TAG Theoretical and Applied Genetics
Year of publishing :2021
Volume:134
Article number:3829–3843
Number of Pages:15
Publisher:SPRINGER
ISSN:0040-5752
Language:English
Additional Information:Group author: the PPP Barley Consortium
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
Keywords:Rhynchosporium commune, GWAS, Hordeum vulgare L, Multi-parent Advanced Generation Inter-Cross, FarmCPU, BLINK
URN:NBN:urn:nbn:se:slu:epsilon-p-112855
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112855
Additional ID:
Type of IDID
DOI10.1007/s00122-021-03930-y
Web of Science (WoS)000681155400001
ID Code:26096
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:12 Nov 2021 15:25
Metadata Last Modified:12 Nov 2021 15:31

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