| Genetic architecture of chalcone isomerase non-coding regions in common bean (Phaseolus vulgaris L.). | |
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MedLine Citation:
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PMID: 17546085 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Sequence data for 2 non-coding regions of the chalcone isomerase gene were analyzed to study the genetic architecture of common bean (Phaseolus vulgaris L.). One region corresponded to the first 596 nucleotides (nt) of the 5'-untranslated region (UTR). The other region was the 710 nt intron 3. Data were collected from 67 genotypes representing both landraces and cultivars from the geographical range of the cultivated form of the species. Variability in the 5'-UTR region was represented by single nucleotide polymorphisms (SNPs), whereas intron 3 variation was due to a collection of SNPs and insertion-deletion events. Diversity was greater in the 5'-UTR (pi = 0.0175) than in intron 3 (pi = 0.0089). For each region, diversity was greater for genotypes of Middle American than Andean origin. A single recombination event was observed, and the hybridization pattern necessary to derive the recombinant genotypes supported the previous observation of an ancestral gene pool from which modern domesticated genotypes are derived. For both regions, a strongly supported Andean group was observed, whereas the presence of 2 Middle American subgroups was also supported. Although a significantly positive Tajima's D statistic was observed for the 5'-UTR for all genotypes, we conclude that this is more likely the result of a strong demographic effect and that balancing selection is occurring only among the Middle American genotypes. |
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Authors:
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Phillip E McClean; Rian K Lee |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Genome / National Research Council Canada = Génome / Conseil national de recherches Canada Volume: 50 ISSN: 0831-2796 ISO Abbreviation: Genome Publication Date: 2007 Feb |
Date Detail:
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Created Date: 2007-06-04 Completed Date: 2007-07-23 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8704544 Medline TA: Genome Country: Canada |
Other Details:
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Languages: eng Pagination: 203-14 Citation Subset: IM |
Affiliation:
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Department of Plant Sciences and Genomics and Bioinformatics Program, North Dakota State University, Fargo, ND 58105, USA. phillip.mcclean@ndsu.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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5' Untranslated Regions Base Sequence Genes, Plant* Genetic Variation Genome, Plant* Haplotypes Intramolecular Lyases / genetics* Introns Linkage Disequilibrium Models, Genetic Molecular Sequence Data Phaseolus / enzymology*, genetics* Phylogeny Polymorphism, Genetic Recombination, Genetic |
| Grant Support | |
ID/Acronym/Agency:
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P20 RR016741/RR/NCRR NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/5' Untranslated Regions; EC 5.5.-/Intramolecular Lyases; EC 5.5.1.6/chalcone isomerase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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