Journal article
Fine mapping QSc.VR4, an effective and stable scald resistance locus in barley (Hordeum vulgare L.), to a 0.38-Mb region enriched with LRR-RLK and GLP genes
Theoretical and Applied Genetics
2020
Abstract
Scald caused by Rhynchosporium commune is one of the most destructive barley diseases worldwide. Accumulation of adult plant resistance (APR) governed by multiple resistance alleles is predicted to be effective and long-lasting against a broad spectrum of pathotypes. However, the molecular mechanisms that control APR remain poorly understood. Here, quantitative trait loci (QTL) analysis of APR and fine mapping were performed on five barley populations derived from a common parent Vlamingh, which expresses APR to scald. Two QTLs, designated QSc.VR4 and QSc.BR7, were detected from a cross between Vlamingh and Buloke. Our data confirmed that QSc.VR4 is an effective and stable APR locus, residing on the short arm of chromosome 4H, and QSc.BR7 derived from Buloke may be an allele of reported Rrs2. High-resolution fine mapping revealed that QSc.VR4 is located in a 0.38 Mb genomic region between InDel markers 4H2282169 and 4H2665106. The gene annotation analysis and sequence comparison suggested that a gene cluster containing two adjacent multigene families encoding leucine-rich repeat receptor kinase-like proteins (LRR-RLKs) and germin-like proteins (GLPs), respectively, is likely contributing to scald resistance. Adult plant resistance (APR) governed by QSc.VR4 may confer partial levels of resistance to the fungus Rhynchosporium commune and, furthermore, be an important resource for gene pyramiding that may contribute broad-based and more durable resistance.
Details
- Title
- Fine mapping QSc.VR4, an effective and stable scald resistance locus in barley (Hordeum vulgare L.), to a 0.38-Mb region enriched with LRR-RLK and GLP genes
- Authors/Creators
- Y. Wang (Author/Creator) - Huazhong Agricultural UniversityY. Xu (Author/Creator) - Yangtze UniversityS. Gupta (Author/Creator) - Murdoch UniversityY. Zhou (Author/Creator) - Yangtze UniversityH. Wallwork (Author/Creator) - South Australian Research and Development InstituteG. Zhou (Author/Creator) - Department of Primary Industries and Regional DevelopmentS. Broughton (Author/Creator) - Department of Primary Industries and Regional DevelopmentX-Q Zhang (Author/Creator) - Murdoch UniversityC. Tan (Author/Creator) - Murdoch UniversityS. Westcott (Author/Creator) - Department of Primary Industries and Regional DevelopmentD. Moody (Author/Creator) - Limagrain (France)D. Sun (Author/Creator) - Huazhong Agricultural UniversityR. Loughman (Author/Creator) - Department of Primary Industries and Regional DevelopmentW. Zhang (Author/Creator) - Yangtze UniversityC. Li (Author/Creator) - Department of Primary Industries and Regional Development
- Publication Details
- Theoretical and Applied Genetics
- Publisher
- Springer Verlag
- Identifiers
- 991005545065307891
- Copyright
- © 2020 Springer Nature Switzerland AG
- Murdoch Affiliation
- State Agricultural Biotechnology Centre; Western Barley Genetics Alliance; School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Industry collaboration
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.419 Jasmonic Acid
- Web Of Science research areas
- Agronomy
- Genetics & Heredity
- Horticulture
- Plant Sciences
- ESI research areas
- Agricultural Sciences