This online database contains information from a project at the SCRI to mine wheat and barley genes for SNPs which were mapped in barley crosses. A synopsis and further details about the project can be seen here. An online abstract of the published paper can be seen here.
We focused on genes associated with abiotic stress in barley. The reference point for each gene was an EST unigene from the HarvEST Barley Assembly 21 which was used to design Affymetrix probe sets for the Barley1 GeneChip.
A selection of EST unigenes was analyzed for sequence polymorphisms in 8 diverse barley genotypes: OWB D, OWB R, Steptoe, Morex, Lina, HS92, Optic and Golden Promise. These include parents of three doubled haploid mapping populations facilitating linkage mapping of genes and represent wide range of cultivated barley germplasm from Europe and North America, as well as a wild barley accession.
Primers were designed with Primer3 software targeting the 3' ends of unigenes. PCR was carried out on a panel of 8 genotypes, PCR products were treated with exonuclease and shrimp alkaline phosphatase and single-pass sequencing was done with the same primers as PCR using Applied Biosystems BigDye terminator kit.
Mutations identified by polyphred and the contig alignments were processed using custom-made Perl scripts and entered into a mySQL database.
Rostoks N, Mudie S, Cardle L, Russell J, Ramsay L, Booth A, Svensson JT, Wanamaker SI, Walia H, Rodriguez EM, Hedley PE, Liu H, Morris J, Close TJ, Marshall DF, Waugh R (2005) "Genome-wide SNP discovery and linkage analysis in barley based on genes responsive to abiotic stress." Mol. Genet. Genomics 1-13