ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2009
Genetic and physical mapping of a high recombination region on chromosome 7H(1) in barley.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Towards positional isolation of three quantitative trait loci conferring resistance to powdery mildew in two Spanish barley landraces.PloS one · 2013Article
- Fine mapping and comparative genomics integration of two quantitative trait loci controlling resistance to powdery mildew in a Spanish barley landrace.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2012Article
- Resistance to powdery mildew in Spanish barley landraces is controlled by different sets of quantitative trait loci.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2011Article
- HvNax3--a locus controlling shoot sodium exclusion derived from wild barley (Hordeum vulgare ssp. spontaneum).Functional & integrative genomics · 2010Article
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5 authors.
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Abstract
Approaches utilizing microlinearity between related species allow for the identification of syntenous regions and orthologous genes. Within the barley Chromosome 7H(1) is a region of high recombination flanked by molecular markers cMWG703 and MWG836. We present the constructed physical contigs linked to molecular markers across this region using bacterial artificial chromosomes (BAC) from the cultivar Morex. Barley expressed sequence tags (EST), identified by homology to rice chromosome 6 between the rice molecular markers C425A and S1434, corresponded to the barley syntenous region of Chromosome 7H(1) Bins 2-5 between molecular markers cMWG703-MWG836. Two hundred and thirteen ESTs were genetically mapped yielding 267 loci of which 101 were within the target high recombination region while 166 loci mapped elsewhere. The 101 loci were joined by 43 other genetic markers resulting in a highly saturated genetic map. In order to develop a physical map of the region, ESTs and all other molecular markers were used to identify Morex BAC clones. Seventy-four BAC contigs were formed containing 2-102 clones each with an average of 19 and a median of 13 BAC clones per contig. Comparison of the BAC contigs, generated here, with the Barley Physical Mapping Database contigs, resulted in additional overlaps and a reduction of the contig number to 56. Within cMWG703-MWG836 are 24 agriculturally important traits including the seedling spot blotch resistance locus, Rcs5. Genetic and physical analysis of this region and comparison to rice indicated an inversion distal of the Rcs5 locus. Three BAC clone contigs spanning the Rcs5 locus were identified.
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