Microsatellite discovery from BAC end sequences and genetic mapping to anchor the soybean physical and genetic maps
| Autor: | Jeff TomkinsJ. Tomkins, Debbie ScheerD. Scheer, Colin KremitskiC. Kremitski, Jason Walker, David GrantD. Grant, Scott JacksonS. Jackson, Rod Wing, Terry Olson, Steven CannonS. Cannon, Hyeran Kim, Randy C. Shoemaker, Jeremy Schmutz, Jon DavitoJ. Davito, Perry CreganP. Cregan, Will NelsonW. Nelson, Montona Futrell-Griggs, Rex T. NelsonR.T. Nelson, Yeisoo Yu, Wesley C. Warren, John W. Wallis, Tina GravesT. Graves, Henry NguyenH. Nguyen, Mingcheng LuoM. Luo, Gary Stacey, Sandra W. Clifton, Xiaolei WuX. Wu, Jan Dvorak, Bindu Joseph |
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| Rok vydání: | 2008 |
| Předmět: |
Chromosomes
Artificial Bacterial Population Genomics Biology chemistry.chemical_compound Gene mapping Molecular marker Genetics education Molecular Biology Whole genome sequencing education.field_of_study Polymorphism Genetic Contig Chromosome Mapping food and beverages General Medicine Physical Chromosome Mapping chemistry Microsatellite Map Location Soybeans Microsatellite Repeats Biotechnology |
| Zdroj: | Genome. 51:294-302 |
| ISSN: | 1480-3321 0831-2796 |
| DOI: | 10.1139/g08-010 |
| Popis: | Whole-genome sequencing of the soybean ( Glycine max (L.) Merr. ‘Williams 82’) has made it important to integrate its physical and genetic maps. To facilitate this integration of maps, we screened 3290 microsatellites (SSRs) identified from BAC end sequences of clones comprising the ‘Williams 82’ physical map. SSRs were screened against 3 mapping populations. We found the AAT and ACT motifs produced the greatest frequency of length polymorphisms, ranging from 17.2% to 32.3% and from 11.8% to 33.3%, respectively. Other useful motifs include the dinucleotide repeats AG, AT, and AG, with frequency of length polymorphisms ranging from 11.2% to 18.4% (AT), 12.4% to 20.6% (AG), and 11.3% to 16.4% (GT). Repeat lengths less than 16 bp were generally less useful than repeat lengths of 40–60 bp. Two hundred and sixty-five SSRs were genetically mapped in at least one population. Of the 265 mapped SSRs, 60 came from BAC singletons not yet placed into contigs of the physical map. One hundred and ten originated in BACs located in contigs for which no genetic map location was previously known. Ninety-five SSRs came from BACs within contigs for which one or more other BACs had already been mapped. For these fingerprinted contigs (FPC) a high percentage of the mapped markers showed inconsistent map locations. A strategy is introduced by which physical and genetic map inconsistencies can be resolved using the preliminary 4× assembly of the whole genome sequence of soybean. |
| Databáze: | OpenAIRE |
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