Research article - Peer-reviewed, 2021
Discovery of a novel powdery mildew (Blumeria graminis) resistance locus in rye (Secale cereale L.)
Vendelbo, N. M.; Mahmood, K.; Sarup, P.; Kristensen, P. S.; Orabi, J.; Jahoor, A.Abstract
Powdery mildew is one of the most destructive diseases in the world, causing substantial grain yield losses and quality reduction in cereal crops. At present 23 powdery mildew resistance genes have been identified in rye, of which the majority are in wheat-rye translocation lines developed for wheat improvement. Here, we investigated the genetics underlying powdery mildew resistance in the Gulzow-type elite hybrid rye (Secale cereale L.) breeding germplasm. In total, 180 inbred breeding lines were genotyped using the state-of-the-art 600 K SNP array and phenotyped for infection type against three distinct field populations of B. graminis f. sp. secalis from Northern Germany (2013 and 2018) and Denmark (2020). We observed a moderate level of powdery mildew resistance in the non-restorer germplasm population, and by performing a genome-wide association study using 261,406 informative SNP markers, we identified a powdery mildew resistance locus, provisionally denoted PmNOS1, on the distal tip of chromosome arm 7RL. Using recent advances in rye genomic resources, we investigated whether nucleotide-binding leucine-rich repeat genes residing in the identified 17 Mbp block associated with PmNOS1 on recent reference genomes resembled known Pm genes.Published in
Scientific Reports2021, volume: 11, number: 1, article number: 23057
Publisher: NATURE PORTFOLIO
Authors' information
Vendelbo, N. M.
Aarhus University
Mahmood, Khalid
Nordic Seed A/S
Sarup, P.
Nordic Seed A/S
Kristensen, P. S.
Nordic Seed A/S
Orabi, J.
Nordic Seed A/S
Swedish University of Agricultural Sciences, Department of Plant Breeding
Nordic Seed A/S
Associated SLU-program
SLU Network Plant Protection
UKÄ Subject classification
Genetics and Breeding
Publication Identifiers
DOI: https://doi.org/10.1038/s41598-021-02488-5
URI (permanent link to this page)
https://res.slu.se/id/publ/114703