ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2019
Chromosome engineering-mediated introgression and molecular mapping of novel Aegilops speltoides-derived resistance genes for tan spot and Septoria nodorum blotch diseases in wheat.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 15 citations in OpenAlex.
- Unlocking the genetic potential ofFrontiers in plant science · 2026Review
- Enrichment and Diversification of the Wheat Genome via Alien Introgression.Plants (Basel, Switzerland) · 2024Review
- Domestication of newly evolved hexaploid wheat-A journey of wild grass to cultivated wheat.Frontiers in genetics · 2022Review
- Dissection and physical mapping of wheat chromosome 7B by inducing meiotic recombination with its homoeologues in Aegilops speltoides and Thinopyrum elongatum.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2020Article
- Genome-wide association mapping of tan spot resistance in a worldwide collection of durum wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2020Article
- Partitioning and physical mapping of wheat chromosome 3B and its homoeologue 3E in Thinopyrum elongatum by inducing homoeologous recombination.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2020Article
- The Resurgence of Introgression Breeding, as Exemplified in Wheat Improvement.Frontiers in plant science · 2020Review
- Physical Mapping of Stem Rust Resistance Gene Sr52 fromInternational journal of molecular sciences · 2019Article
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Authors and funding
6 authors at 1 institution in 1 country.
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Abstract
key messageWe identified, mapped and introduced novel Aegilops speltoides-derived resistance genes for tan spot and SNB diseases into wheat, enhancing understanding and utilization of host resistance to both diseases in wheat. Tan spot and Septoria nodorum blotch (SNB) are two important fungal diseases of wheat. Resistance to these diseases is often observed as the lack of sensitivity to the necrotrophic effectors (NE) produced by the fungal pathogens and thus exhibits a recessive inheritance pattern. In this study, we identified novel genes for resistance to tan spot and SNB on Aegilops speltoides (2n = 2x = 14, genome SS) chromosome 2S. These genes confer dominant resistance in the wheat background, indicating a distinct NE-independent mechanism of resistance. Ae. speltoides chromosome 2S was engineered for resistance gene introgression and molecular mapping by inducing meiotic homoeologous recombination with wheat chromosome 2B. Twenty representative 2B-2S recombinants were evaluated for reaction to tan spot and SNB and were delineated by genomic in situ hybridization and high-throughput wheat 90 K SNP assay. The resistance genes physically mapped to the sub-telomeric region (~ 8 Mb) on the short arm of chromosome 2S and designated TsrAes1 for tan spot resistance and SnbAes1 for SNB resistance. In addition, we developed SNP-derived PCR markers closely linked to TsrAes1/SnbAes1 for marker-assisted selection in wheat breeding. TsrAes1 and SnbAes1 are the first set of NE-independent tan spot, and SNB resistance genes are identified from Ae. speltoides. The 2SS-2BS·2BL recombinants with minimal amounts of Ae. speltoides chromatin containing TsrAes1/SnbAes1 were produced for germplasm development, making the wild species-derived resistance genes usable in wheat breeding. This will strengthen and diversify resistance of wheat to tan spot and SNB and facilitate understanding of resistance to these two diseases.
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