Evolutionary meta-analysis of solanaceous resistance gene and solanum resistance gene analog sequences and a practical framework for cross-species comparisons

Molecular Plant-microbe Interactions : MPMI
Edmund A QuirinJames M Bradeen

Abstract

Cross-species comparative genomics approaches have been employed to map and clone many important disease resistance (R) genes from Solanum species-especially wild relatives of potato and tomato. These efforts will increase with the recent release of potato genome sequence and the impending release of tomato genome sequence. Most R genes belong to the prominent nucleotide binding site-leucine rich repeat (NBS-LRR) class and conserved NBS-LRR protein motifs enable survey of the R gene space of a plant genome by generation of resistance gene analogs (RGA), polymerase chain reaction fragments derived from R genes. We generated a collection of 97 RGA from the disease-resistant wild potato S. bulbocastanum, complementing smaller collections from other Solanum species. To further comparative genomics approaches, we combined all known Solanum RGA and cloned solanaceous NBS-LRR gene sequences, nearly 800 sequences in total, into a single meta-analysis. We defined R gene diversity bins that reflect both evolutionary relationships and DNA cross-hybridization results. The resulting framework is amendable and expandable, providing the research community with a common vocabulary for present and future study of R gene lineages. Through a seri...Continue Reading

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Citations

Sep 5, 2014·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Anthony T SlaterJohn W Forster
Apr 11, 2013·Studies in History and Philosophy of Biological and Biomedical Sciences·Sabina Leonelli
Dec 13, 2016·Genome Génome / Conseil National De Recherches Canada·Diana María SeguraM Virginia Sanchez-Puerta

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