ArticlePlant physiology2009
Analysis of intraspecies diversity in wheat and barley genomes identifies breakpoints of ancient haplotypes and provides insight into the structure of diploid and hexaploid triticeae gene pools.
Article in Plant physiology, 2009. 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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Who cites it
19 citing papers in PubMed.
- Development of a High-resolution Melt (HRM) Marker Diagnostic to the Wheat (Triticum aestivum L.) Leaf Rust Resistance Gene Lr34.Methods in molecular biology (Clifton, N.J.) · 2025Article
- The non-random patterns of genetic variation induced by asymmetric somatic hybridization in wheat.BMC plant biology · 2018Article
- TILL-D: AnFrontiers in plant science · 2018Article
- Molecular cloning and characterization of two novel genes from hexaploid wheat that encode double PR-1 domains coupled with a receptor-like protein kinase.Molecular genetics and genomics : MGG · 2017Article
- Useful parasites: the evolutionary biology and biotechnology applications of transposable elements.Journal of genetics · 2016Review
- Isolation and fine mapping of Rps6: an intermediate host resistance gene in barley to wheat stripe rust.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2016Article
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- Article
- Sequence-based mapping of the polyploid wheat genome.G3 (Bethesda, Md.) · 2013Article
- De novo transcriptome characterization of Vitis vinifera cv. Corvina unveils varietal diversity.BMC genomics · 2013Article
- Haplotype variation of Glu-D1 locus and the origin of Glu-D1d allele conferring superior end-use qualities in common wheat.PloS one · 2013Article
- Genome change in wheat observed through the structure and expression of α/β-gliadin genes.Functional & integrative genomics · 2012Article
- The domestication syndrome genes responsible for the major changes in plant form in the Triticeae crops.Plant & cell physiology · 2011Review
- First survey of the wheat chromosome 5A composition through a next generation sequencing approach.PloS one · 2011Article
- A single-nucleotide polymorphism that accounts for allelic variation in the Lr34 gene and leaf rust reaction in hard winter wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2010Article
- Fine-mapping of the leaf rust Lr34 locus in Triticum aestivum (L.) and characterization of large germplasm collections support the ABC transporter as essential for gene function.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2010Article
- Article
- Splendor in the grasses.Plant physiology · 2009Article
- Genome-wide association study of pre-harvest sprouting resistance in Chinese wheat founder parents.Genetics and molecular biologyArticle
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Authors and funding
13 authors.
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No grant is acknowledged in the PubMed record.
Abstract
A large number of wheat (Triticum aestivum) and barley (Hordeum vulgare) varieties have evolved in agricultural ecosystems since domestication. Because of the large, repetitive genomes of these Triticeae crops, sequence information is limited and molecular differences between modern varieties are poorly understood. To study intraspecies genomic diversity, we compared large genomic sequences at the Lr34 locus of the wheat varieties Chinese Spring, Renan, and Glenlea, and diploid wheat Aegilops tauschii. Additionally, we compared the barley loci Vrs1 and Rym4 of the varieties Morex, Cebada Capa, and Haruna Nijo. Molecular dating showed that the wheat D genome haplotypes diverged only a few thousand years ago, while some barley and Ae. tauschii haplotypes diverged more than 500,000 years ago. This suggests gene flow from wild barley relatives after domestication, whereas this was rare or absent in the D genome of hexaploid wheat. In some segments, the compared haplotypes were very similar to each other, but for two varieties each at the Rym4 and Lr34 loci, sequence conservation showed a breakpoint that separates a highly conserved from a less conserved segment. We interpret this as recombination breakpoints of two ancient haplotypes, indicating that the Triticeae genomes are a heterogeneous and variable mosaic of haplotype fragments. Analysis of insertions and deletions showed that large events caused by transposable element insertions, illegitimate recombination, or unequal crossing over were relatively rare. Most insertions and deletions were small and caused by template slippage in short homopolymers of only a few base pairs in size. Such frequent polymorphisms could be exploited for future molecular marker development.
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