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Genetic mapping identifies loci that influence tomato resistance against Colorado potato beetles

dc.contributor.authorVargas Ortiz, Erandi
dc.contributor.authorGonda, Itay
dc.contributor.authorSmeda, John R.
dc.contributor.authorMutschler, Martha A.
dc.contributor.authorGiovannoni, James J.
dc.contributor.authorJander, Georg
dc.date.accessioned2019-08-09T22:22:58Z
dc.date.available2019-08-09T22:22:58Z
dc.date.issued2018
dc.identifier.citationVargas-Ortiz, Erandi; Gonda, Itay; Smeda, John; Mutschler, Martha; Giovannoni, James & Jander, Georg. (2018). Genetic mapping identifies loci that influence tomato resistance against Colorado potato beetles. Scientific Reports. 8. 10.1038/s41598-018-24998-5.
dc.identifier.urihttp://hdl.handle.net/11627/5070
dc.description.abstract"The Colorado potato beetle (CPB; Leptinotarsa decemlineata Say), the most economically important insect pest on potato (Solanum tuberosum L.), also feeds on other Solanaceae, including cultivated tomato (Solanum lycopersicum L.). We used tomato genetic mapping populations to investigate natural variation in CPB resistance. CPB bioassays with 74 tomato lines carrying introgressions of Solanum pennellii in S. lycopersicum cv. M82 identified introgressions from S. pennellii on chromosomes 1 and 6 conferring CPB susceptibility, whereas introgressions on chromosomes 1, 8 and 10 conferred higher resistance. Mapping of CPB resistance using 113 recombinant inbred lines derived from a cross between S. lycopersicum cv UC-204B and Solanum galapagense identified significant quantitative trait loci on chromosomes 6 and 8. In each case, the S. galapagense alleles were associated with lower leaf damage and reduced larval growth. Results of both genetic mapping approaches converged on the same region of chromosome 6, which may have important functions in tomato defense against CPB herbivory. Although genetic mapping identified quantitative trait loci encompassing known genes for tomato acyl sugar and glycoalkaloid biosynthesis, experiments with acyl sugar near-isogenic lines and transgenic GAME9 glycoalkaloid-deficient and overproducing lines showed no significant effect of these otherwise insect-defensive metabolites on CPB performance."
dc.publisherNature Publishing Group
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectGenetics
dc.subjectPlant genetics
dc.subject.classificationCIENCIAS TECNOLÓGICAS
dc.titleGenetic mapping identifies loci that influence tomato resistance against Colorado potato beetles
dc.typearticle
dc.identifier.doihttps://doi.org/10.1038/s41598-018-24998-5
dc.rights.accessAcceso Abierto


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
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