Mapping Disease Resistance Genes in Grapevine
Author Information
Author(s): Moroldo Marco, Paillard Sophie, Marconi Raffaella, Fabrice Legeai, Canaguier Aurelie, Cruaud Corinne, De Berardinis Veronique, Guichard Cecile, Brunaud Veronique, Le Clainche Isabelle, Scalabrin Simone, Testolin Raffaele, Di Gaspero Gabriele, Morgante Michele, Adam-Blondon Anne-Francoise
Primary Institution: UMR de Génomique Végétale, INRA-CNRS-UEVE
Hypothesis
The study aims to construct a physical map of the heterozygous grapevine 'Cabernet Sauvignon' to facilitate the mapping of candidate genes for disease resistance.
Conclusion
The 'Cabernet Sauvignon' physical map is a useful tool for mapping complex families of genes related to disease resistance, despite some limitations in assembly accuracy.
Supporting Evidence
- The physical map included 29,727 BAC clones assembled into 1,770 contigs.
- The map spanned 715,684 kbp, which is 1.5-fold the genome size.
- 395 contigs were anchored to chromosomes using genetic markers.
Takeaway
Scientists created a detailed map of grapevine DNA to help find genes that make grapes resistant to diseases. This map is like a treasure map for finding important genes.
Methodology
The physical map was constructed using an automated protocol based on BAC fingerprinting, with 44,544 BAC clones fingerprinted and assembled into contigs.
Potential Biases
The study may be biased due to the high level of heterozygosity in the grapevine, which complicates the assembly of BAC clones.
Limitations
The assembly of heterozygous clones into contigs was affected by high heterozygosity, leading to potential mis-assembly and chimerical contigs.
Digital Object Identifier (DOI)
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