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GrainGenes Reference Report: GNM-39-155

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Reference	GNM-39-155
Title	Comparative mapping of homoeologous group 1 regions and genes for resistance to obligate biotrophs in Avena, Hordeum, and Zea mays
Journal	Genome
Year	1996
Volume	39
Pages	155-164
Author	Yu G Bush A Wise R
Abstract	The colinearity of markers linked with resistance loci on linkage group A of diploid oat, on the homoeologous groups in hexaploid oat, on barley chromosome 1H, and on homoeologous maize chromosomes was determined Thirty-two DNA probes from homoeologous group 1 chromosomes of the Gramineae were tested Most of the heterologous probes detected polymorphisms that mapped to linkage group A of diploid oat, two linkage groups of hexaploid oat, barley chromosome 1H, and maize chromosomes 3, 6, and 8 Many of these DNA markers appeared to have conserved linkage relationships with resistance and prolamin loci in Avena, Hordeum, and Zea mays. These resistance loci included the Pca crown rust resistance cluster in diploid oat, the R203 crown rust resistance locus in hexaploid oat, the Mla powdery mildew resistance cluster in barley, and the rp3, wsm1, wsm2, mdm1, ht2, and htn1 resistance loci in maize. Prolamin encoding loci included Avn in diploid oat and Hor1 and Hor2 in barley. A high degree of colinearity was revealed among the common RFLP markers or the small chromosome fragments among these homoeologous groups.
Keyword	[ Hide all but 1 of 26 ] avena nuda avena sativa avena wiestii chromosome-maps chromosomes disease resistance dna probes erysiphe graminis-f gene-mapping genes genetic markers homoeologous-chromosomes hordei hordeum vulgare hybrids interspecific-hybridization linkage-groups linkage-maps loci marker genes prolamin puccinia coronata restriction-fragment-length-polymorphism rust-diseases southern-blotting zea mays

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