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

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 nat...

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Autores principales:	Erandi Vargas-Ortiz, Itay Gonda, John R. Smeda, Martha A. Mutschler, James J. Giovannoni, Georg Jander
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/707c8be89b6a4f2a856319a81a3df9a9
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spelling	oai:doaj.org-article:707c8be89b6a4f2a856319a81a3df9a92021-12-02T12:31:57ZGenetic mapping identifies loci that influence tomato resistance against Colorado potato beetles10.1038/s41598-018-24998-52045-2322https://doaj.org/article/707c8be89b6a4f2a856319a81a3df9a92018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-24998-5https://doaj.org/toc/2045-2322Abstract 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.Erandi Vargas-OrtizItay GondaJohn R. SmedaMartha A. MutschlerJames J. GiovannoniGeorg JanderNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Erandi Vargas-Ortiz Itay Gonda John R. Smeda Martha A. Mutschler James J. Giovannoni Georg Jander Genetic mapping identifies loci that influence tomato resistance against Colorado potato beetles
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.
format	article
author	Erandi Vargas-Ortiz Itay Gonda John R. Smeda Martha A. Mutschler James J. Giovannoni Georg Jander
author_facet	Erandi Vargas-Ortiz Itay Gonda John R. Smeda Martha A. Mutschler James J. Giovannoni Georg Jander
author_sort	Erandi Vargas-Ortiz
title	Genetic mapping identifies loci that influence tomato resistance against Colorado potato beetles
title_short	Genetic mapping identifies loci that influence tomato resistance against Colorado potato beetles
title_full	Genetic mapping identifies loci that influence tomato resistance against Colorado potato beetles
title_fullStr	Genetic mapping identifies loci that influence tomato resistance against Colorado potato beetles
title_full_unstemmed	Genetic mapping identifies loci that influence tomato resistance against Colorado potato beetles
title_sort	genetic mapping identifies loci that influence tomato resistance against colorado potato beetles
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/707c8be89b6a4f2a856319a81a3df9a9
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Genetic mapping identifies loci that influence tomato resistance against Colorado potato beetles

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