Multi-locus genome-wide association study of fusarium head blight in relation to days to anthesis and plant height in a spring wheat association panel

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DOI

Resolve DOI: https://doi.org/10.3389/fpls.2023.1166282

Author

Search for: Cabral, Adrian L.; Search for: Ruan, Yuefeng; Search for: Cuthbert, Richard D.; Search for: Li, Lin; Search for: Zhang, Wentao¹; Search for: Boyle, Kerry¹; Search for: Berraies, Samia; Search for: Henriquez, Maria Antonia; Search for: Burt, Andrew; Search for: Kumar, Santosh; Search for: Fobert, Pierre¹; Search for: Piche, Isabelle; Search for: Bokore, Firdissa E.; Search for: Meyer, Brad; Search for: Sangha, Jatinder; Search for: Knox, Ron E.

Affiliation

National Research Council of Canada. Aquatic and Crop Resource Development

Format

Text, Article

Subject

fusarium head blight; spring wheat; QTN; GWAS; plant height; days to anthesis

Abstract

Fusarium head blight (FHB) is a highly destructive fungal disease of wheat to which host resistance is quantitatively inherited and largely influenced by the environment. Resistance to FHB has been associated with taller height and later maturity; however, a further understanding of these relationships is needed. An association mapping panel (AMP) of 192 predominantly Canadian spring wheat was genotyped with the wheat 90K single-nucleotide polymorphism (SNP) array. The AMP was assessed for FHB incidence (INC), severity (SEV) and index (IND), days to anthesis (DTA), and plant height (PLHT) between 2015 and 2017 at three Canadian FHB-inoculated nurseries. Seven multi-environment trial (MET) datasets were deployed in a genome-wide association study (GWAS) using a single-locus mixed linear model (MLM) and a multi-locus random SNP-effect mixed linear model (mrMLM). MLM detected four quantitative trait nucleotides (QTNs) for INC on chromosomes 2D and 3D and for SEV and IND on chromosome 3B. Further, mrMLM identified 291 QTNs: 50 (INC), 72 (SEV), 90 (IND), 41 (DTA), and 38 (PLHT). At two or more environments, 17 QTNs for FHB, DTA, and PLHT were detected. Of these 17, 12 QTNs were pleiotropic for FHB traits, DTA, and PLHT on chromosomes 1A, 1D, 2D, 3B, 5A, 6B, 7A, and 7B; two QTNs for DTA were detected on chromosomes 1B and 7A; and three PLHT QTNs were located on chromosomes 4B and 6B. The 1B DTA QTN and the three pleiotropic QTNs on chromosomes 1A, 3B, and 6B are potentially identical to corresponding quantitative trait loci (QTLs) in durum wheat. Further, the 3B pleiotropic QTN for FHB INC, SEV, and IND co-locates with TraesCS3B02G024900 within the Fhb1 region on chromosome 3B and is ~3 Mb from a cloned Fhb1 candidate gene TaHRC. While the PLHT QTN on chromosome 6B is putatively novel, the 1B DTA QTN co-locates with a disease resistance protein located ~10 Mb from a Flowering Locus T1-like gene TaFT3-B1, and the 7A DTA QTN is ~5 Mb away from a maturity QTL QMat.dms-7A.3 of another study. GWAS and QTN candidate genes enabled the characterization of FHB resistance in relation to DTA and PLHT. This approach should eventually generate additional and reliable trait-specific markers for breeding selection, in addition to providing useful information for FHB trait discovery.

Publication date

2023-06-29

Publisher

Frontiers Media

Licence

Creative Commons, Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/

Language

English

Peer reviewed

Yes

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Record identifier

a405e6d1-b0a6-49a8-936d-8218a3d60826

Record created

2024-06-11

Record modified

2024-06-11

Date modified:: 2024-06-30