ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2021
Chromosomal composition analysis and molecular marker development for the novel Ug99-resistant wheat-Thinopyrum ponticum translocation line WTT34.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed.
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- Development and Characterization of a Novel Wheat-TetraploidPlants (Basel, Switzerland) · 2023Article
- The launch of satellite: DNA repeats as a cytogenetic tool in discovering the chromosomal universe of wild Triticeae.Chromosoma · 2023Review
- Physical mapping of a new powdery mildew resistance locus fromFrontiers in plant science · 2023Article
- Establishment and identification of six wheat-Thinopyrum ponticum disomic addition lines derived from partial amphiploid Xiaoyan 7430.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2022Article
- Cytogenetic identification and molecular marker development of a novel wheat-Thinopyrum ponticum translocation line with powdery mildew resistance.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2022Article
- Molecular cytogenetics and development of St-chromosome-specific molecular markers of novel stripe rust resistant wheat-Thinopyrum intermedium and wheat-Thinopyrum ponticum substitution lines.BMC plant biology · 2022Article
- Characterization of Two Wheat-Frontiers in plant science · 2022Article
- Chromosome karyotype and stability of new synthetic hexaploid wheat.Molecular breeding : new strategies in plant improvement · 2021Article
- Identification of a Wheat-Frontiers in plant science · 2021Article
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Abstract
key messageA novel Ug99-resistant wheat-Thinopyrum ponticum translocation line was produced, its chromosomal composition was analyzed and specific markers were developed. Stem rust caused by Puccinia graminis f. sp. tritici Eriks. & E. Henn (Pgt) has seriously threatened global wheat production since Ug99 race TTKSK was first detected in Uganda in 1998. Thinopyrum ponticum is near immune to Ug99 races and may be useful for enhancing wheat disease resistance. Therefore, developing new wheat-Th. ponticum translocation lines that are resistant to Ug99 is crucial. In this study, a novel wheat-Th. ponticum translocation line, WTT34, was produced. Seedling and field evaluation revealed that WTT34 is resistant to Ug99 race PTKST. The resistance was derived from the alien parent Th. ponticum. Screening WTT34 with markers linked to Sr24, Sr25, Sr26, Sr43, and SrB resulted in the amplification of different DNA fragments from Th. ponticum, implying WTT34 carries at least one novel stem rust resistance gene. Genomic in situ hybridization (GISH), multicolor fluorescence in situ hybridization (mc-FISH), and multi-color GISH (mc-GISH) analyses indicated that WTT34 carries a T5DS·5DL-Th translocation, which was consistent with wheat660K single-nucleotide polymorphism (SNP) array results. The SNP array also uncovered a deletion event in the terminal region of chromosome 1D. Additionally, the homeology between alien segments and the wheat chromosomes 2A and 5D was confirmed. Furthermore, 51 PCR-based markers derived from the alien segments of WTT34 were developed based on specific-locus amplified fragment sequencing (SLAF-seq). These markers may enable wheat breeders to rapidly trace Th. ponticum chromosomal segments carrying Ug99 resistance gene(s).
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