GrainGenes Reference Report: NAR-32-3546
Reference
NAR-32-3546
Title
Demarcating gene-rich regions of the wheat genome.
Journal
Nucleic Acids Research
Year
2004
Volume
32
Pages
3546-3565
Author
[ Hide all but 1 of 6 ] Erayman M Sandhu D Sidhu D Dilbirligi M Baenziger PS Gill KS
Abstract
By physically mapping 3025 loci including 252 phenotypically characterized genes and 17 quantitative trait loci (QTLs) relative to 334 deletion breakpoints, we localized the gene-contai ning fraction to 29% of the wheat genome present as 18 major and 30 minor gene-rich regions (GRRs). The GRRs varied both in gene number and density. The five largest GRRs physically spanning <3% of the genome contained 26% of the wheat genes. Approximate size of the GRRs ranged from 3 to 71 Mb. Recombination mainly occurred in the GRRs. Various GRRs varied as much as 128-fold for gene density and 140-fold for recombination rates. Except for a general suppression in 25-40% of the chromosomal region around centromeres, no correlation of recombination was observed with the gene density, the size, or chromosomal location of GRRs. More than 30% of the wheat genes are in recombination-poor regions thus are inaccessible to map-based cloning.
External Databases
Pubmed: 15240829 https://doi.org/10.1093/nar/gkh639
Map Data
Wheat, Branched spike gene, 2009
Keyword
a1-sh2 interval
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: NAR-32-3546
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||