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Título

Characterization of sequence polymorphisms from microsatellite flanking regions in Vitis spp

AutorFernández, M. P.; Núñez, Yolanda; Ponz, Fernando; Hernáiz, Silvia CSIC; Gallego, F. J.; Ibáñez Marcos, Javier CSIC ORCID
Palabras claveDNA markers
Grapevine
Single base extension
Single nucleotide polymorphism
SSR
Fecha de publicaciónoct-2008
EditorSpringer Nature
CitaciónMolecular Breeding 22(3): 455-465 82008)
ResumenSingle nucleotide polymorphisms or SNPs are the most abundant form of genetic variation in the genome of plants and animals. Microsatellites are hypervariable regions of genome, while their flanking regions are assumed to be as conserved as the average of the genome. In the present study, flanking sequences of 10 microsatellite loci were compared in different cultivars of Vitis to determine the existing polymorphism. For every microsatellite, about 8 homozygous cultivars (regarding the microsatellite genotype) were chosen for sequencing. A total of 45 different varieties of Vitis and 91 sequences were analysed. Sequence polymorphisms were detected for all the microsatellite flanking regions studied, including single nucleotide polymorphisms (SNPs), insertions and deletions. The number of identified changes varied considerably among the loci with a frequency of one polymorphism every 41 nucleotides, being VVMD5 the most polymorphic one. A number of SNPs were used to design SNP markers, which were scored by dideoxy single base primer extension and capillary electrophoresis methodology. These SNP markers were employed to genotype 21 cultivars of Vitis vinifera and 4 varieties of other Vitis species. The utility of the markers developed as well as their utility for varietal identification and pedigree studies is discussed, using a similar study carried out with the 10 microsatellites as a reference.
Descripción11 páginas, 6 tablas.-- Part of this work was presented at the 9th International Conference on Grape Genetics and Breeding (2006) and will be published in Acta Horticulturae.
Versión del editorhttp://dx.doi.org/10.1007/s11032-008-9189-z
URIhttp://hdl.handle.net/10261/37289
DOI10.1007/s11032-008-9189-z
ISSN1380-3743
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