ArticleBMC genomics2008
New insights into the origin of the B genome of hexaploid wheat: evolutionary relationships at the SPA genomic region with the S genome of the diploid relative Aegilops speltoides.
Article in BMC genomics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.
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37 citing papers in PubMed.
- Article
- Harnessing primary, secondary and tertiary genepools for durable wheat disease resistance.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Review
- Perspectives on the utilization ofFrontiers in plant science · 2025Review
- Transcriptome based identification and validation of heat stress transcription factors in wheat progenitor species Aegilops speltoides.Scientific reports · 2021Article
- Genetic Contribution of Synthetic Hexaploid Wheat to CIMMYT's Spring Bread Wheat Breeding Germplasm.Scientific reports · 2019Article
- Origin of wheat B-genome chromosomes inferred from RNA sequencing analysis of leaf transcripts from section Sitopsis species of Aegilops.DNA research : an international journal for rapid publication of reports on genes and genomes · 2019Article
- Bread wheat: a role model for plant domestication and breeding.Hereditas · 2019Review
- Nucleotide diversity patterns at the DREB1 transcriptional factor gene in the genome donor species of wheat (Triticum aestivum L).PloS one · 2019Article
- Mechanisms, origin and heredity of Glu-1Ay silencing in wheat evolution and domestication.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2018Article
- Molecular cytogenetic and genomic analyses reveal new insights into the origin of the wheat B genome.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2018Article
- Evolution of the S-Genomes inFrontiers in plant science · 2018Article
- Impact of transposable elements on polyploid plant genomes.Annals of botany · 2017Review
- Adaptation of the Pivotal-Differential Genome Pattern for the Induction of Intergenomic Chromosome Recombination in Hybrids of Synthetic Amphidiploids within Triticeae Tribe.Frontiers in plant science · 2017Article
- Characterization and Expression Analysis of Phytoene Synthase from Bread Wheat (Triticum aestivum L.).PloS one · 2016Article
- Single-molecule real-time transcript sequencing facilitates common wheat genome annotation and grain transcriptome research.BMC genomics · 2015Article
- Dynamic evolution of NBS-LRR genes in bread wheat and its progenitors.Molecular genetics and genomics : MGG · 2015Article
- Article
- Analysis of agronomic and domestication traits in a durum × cultivated emmer wheat population using a high-density single nucleotide polymorphism-based linkage map.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2014Article
- Copy number variation of transposable elements in Triticum-Aegilops genus suggests evolutionary and revolutionary dynamics following allopolyploidization.Plant cell reports · 2013Article
- Genetic characterization and mapping of the Rht-1 homoeologs and flanking sequences in wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2013Article
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17 authors.
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Abstract
backgroundSeveral studies suggested that the diploid ancestor of the B genome of tetraploid and hexaploid wheat species belongs to the Sitopsis section, having Aegilops speltoides (SS, 2n = 14) as the closest identified relative. However molecular relationships based on genomic sequence comparison, including both coding and non-coding DNA, have never been investigated. In an attempt to clarify these relationships, we compared, in this study, sequences of the Storage Protein Activator (SPA) locus region of the S genome of Ae. speltoides (2n = 14) to that of the A, B and D genomes co-resident in the hexaploid wheat species (Triticum aestivum, AABBDD, 2n = 42).
resultsFour BAC clones, spanning the SPA locus of respectively the A, B, D and S genomes, were isolated and sequenced. Orthologous genomic regions were identified as delimited by shared non-transposable elements and non-coding sequences surrounding the SPA gene and correspond to 35,268, 22,739, 43,397 and 53,919 bp for the A, B, D and S genomes, respectively. Sequence length discrepancies within and outside the SPA orthologous regions are the result of non-shared transposable elements (TE) insertions, all of which inserted after the progenitors of the four genomes divergence.
conclusionOn the basis of conserved sequence length as well as identity of the shared non-TE regions and the SPA coding sequence, Ae speltoides appears to be more evolutionary related to the B genome of T. aestivum than the A and D genomes. However, the differential insertions of TEs, none of which are conserved between the two genomes led to the conclusion that the S genome of Ae. speltoides has diverged very early from the progenitor of the B genome which remains to be identified.
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