ArticlePlant molecular biology2004
Dynamics of the evolution of orthologous and paralogous portions of a complex locus region in two genomes of allopolyploid wheat.
Article in Plant molecular biology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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Who cites it
35 citing papers in PubMed, 72 citations in OpenAlex.
- Dissection of a novel major stable QTL on chromosome 7D for grain hardness and its breeding value estimation in bread wheat.Frontiers in plant science · 2024Article
- Genome-wide identification, characteristics and expression of the prolamin genes in Thinopyrum elongatum.BMC genomics · 2021Review
- High molecular weight glutenin gene diversity in Aegilops tauschii demonstrates unique origin of superior wheat quality.Communications biology · 2021Article
- A Catalog of Regulatory Sequences for Trait Gene for the Genome Editing of Wheat.Frontiers in plant science · 2016Article
- The detection of a de novo allele of the Glu-1Dx gene in wheat-rye hybrid offspring.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2014Article
- Molecular characterisation and evolution of HMW glutenin subunit genes in Brachypodium distachyon L.Journal of applied genetics · 2014Article
- Marker-assisted selection for recognizing wheat mutant genotypes carrying HMW glutenin alleles related to baking quality.TheScientificWorldJournal · 2014Article
- Genetic characterization and mapping of the Rht-1 homoeologs and flanking sequences in wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2013Article
- New cis-regulatory elements in the Rht-D1b locus region of wheat.Functional & integrative genomics · 2012Article
- Characterization of SBEIIa homoeologous genes in bread wheat.Molecular genetics and genomics : MGG · 2012Article
- A new class of wheat gliadin genes and proteins.PloS one · 2012Article
- Recent insertion of a 52-kb mitochondrial DNA segment in the wheat lineage.Functional & integrative genomics · 2011Article
- Review
- Mitotic illegitimate recombination is a mechanism for novel changes in high-molecular-weight glutenin subunits in wheat-rye hybrids.PloS one · 2011Article
- Conserved globulin gene across eight grass genomes identify fundamental units of the loci encoding seed storage proteins.Functional & integrative genomics · 2010Article
- Divergence in centromere structure distinguishes related genomes in Coix lacryma-jobi and its wild relative.Chromosoma · 2010Article
- The wheat omega-gliadin genes: structure and EST analysis.Functional & integrative genomics · 2009Article
- New DNA markers for high molecular weight glutenin subunits in wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2008Article
- Structure and dynamics of retrotransposons at wheat centromeres and pericentromeres.Chromosoma · 2008Article
- Molecular characterization and genomic organization of low molecular weight glutenin subunit genes at the Glu-3 loci in hexaploid wheat (Triticum aestivum L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2008Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Two overlapping bacterial artificial chromosome (BAC) clones from the B genome of the tetraploid wheat Triticum turgidum were identified, each of which contains one of the two high-molecular-weight (HMW) glutenin genes, comprising the complex Glu-B1 locus. The complete sequence (285 506 bp of DNA) of this chromosomal region was determined. The two paralogous x-type ( Glu-1-1 ) and y-type ( Glu-1-2 ) HMW-glutenin genes of the complex Glu-B1 locus were found to be separated by ca. 168 000 bp instead of the 51 000 bp separation previously reported for the orthologous Glu-D1 locus of Aegilops tauschii, the D-genome donor of hexaploid wheat. This difference in intergene spacing is due almost entirely to be the insertion of clusters of nested retrotransposons. Otherwise, the orientation and order of the HMW glutenins and adjacent genes were identical in the two genomes. A comparison of these orthologous regions indicates modes and patterns of sequence divergence, with implications for the overall Triticeae genome structure and evolution. A duplicate globulin gene, found 5' of each HMW-glutenin gene, assists to tentatively define the original duplication event leading to the paralogous x- and y-type HMW-glutenin genes. The intergenic regions of the two loci are composed of different patterns and classes of retrotransposons, indicating that insertion times of these retroelements were after the divergence of the two wheat genomes. In addition, a putative receptor kinase gene near the y-type HMW-glutenin gene at the Glu-B1 locus is likely active as it matches recently reported ESTs from germinating barley endosperm. The presence of four genes represented only in the Triticeae endosperm ESTs suggests an endosperm-specific chromosome domain.
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