title: QTL mapping of fruit mineral contents provides new chances for molecular breeding of tomato nutritional traits.
abstract: Agronomical characterization of a RIL population for fruit mineral contents allowed for the identification of QTL controlling these fruit quality traits, flanked by co-dominant markers useful for marker-assisted breeding. Tomato quality is a multi-variant attribute directly depending on fruit chemical composition, which in turn determines the benefits of tomato consumption for human health. Commercially available tomato varieties possess limited variability in fruit quality traits. Wild species, such as Solanum pimpinellifolium, could provide different nutritional advantages and can be used for tomato breeding to improve overall fruit quality. Determining the genetic basis of the inheritance of all the traits that contribute to tomato fruit quality will increase the efficiency of the breeding program necessary to take advantage of the wild species variability. A high-density linkage map has been constructed from a recombinant inbred line (RIL) population derived from a cross between tomato Solanum lycopersicum and the wild-relative species S. pimpinellifolium. The RIL population was evaluated for fruit mineral contents during three consecutive growing seasons. The data obtained allowed for the identification of main QTL and novel epistatic interaction among QTL controlling fruit mineral contents on the basis of a multiple-environment analysis. Most of the QTL were flanked by candidate genes providing valuable information for both tomato breeding for new varieties with novel nutritional properties and the starting point to identify the genes underlying these QTL, which will help to reveal the genetic basis of tomato fruit nutritional properties.
authors.affiliation: Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120, Almería, Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: Capel
authors.affiliation: Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120, Almería, Spain.
authors.forename: Fernando J
authors.initials: FJ
authors.lastname: Yuste-Lisbona
authors.affiliation: Instituto de Hortofruticultura Subtropical y Mediterránea La Mayora, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, 29750, Algarrobo-Costa, Málaga, Spain.
authors.forename: Gloria
authors.initials: G
authors.lastname: López-Casado
authors.affiliation: Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120, Almería, Spain.
authors.forename: Trinidad
authors.initials: T
authors.lastname: Angosto
authors.affiliation: Instituto de Hortofruticultura Subtropical y Mediterránea La Mayora, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, 29750, Algarrobo-Costa, Málaga, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Heredia
authors.affiliation: Instituto de Hortofruticultura Subtropical y Mediterránea La Mayora, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, 29750, Algarrobo-Costa, Málaga, Spain.
authors.forename: Jesús
authors.initials: J
authors.lastname: Cuartero
authors.affiliation: Instituto de Hortofruticultura Subtropical y Mediterránea La Mayora, Universidad de Málaga-Consejo Superior de Investigaciones Científicas, 29750, Algarrobo-Costa, Málaga, Spain.
authors.forename: Rafael
authors.initials: R
authors.lastname: Fernández-Muñoz
authors.affiliation: Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120, Almería, Spain.
authors.forename: Rafael
authors.initials: R
authors.lastname: Lozano
authors.affiliation: Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120, Almería, Spain. jcapel@ual.es.|Departamento de Biología y Geología (Genética), Edificio CITE II-B, Universidad de Almería, Carretera de Sacramento s/n, 04120, Almería, Spain. jcapel@ual.es.
authors.forename: Juan
authors.initials: J
authors.lastname: Capel
mesh_terms: D002874:Chromosome Mapping; D032461:Chromosomes, Plant; D003433:Crosses, Genetic; D032621:DNA Shuffling; D004843:Epistasis, Genetic; D005638:Fruit / Q000737:chemistry*; D008040:Genetic Linkage; D018551:Solanum lycopersicum / Q000235:genetics*; D008903:Minerals / Q000032:analysis; D009753:Nutritive Value; D000069600:Plant Breeding; D040641:Quantitative Trait Loci; D032322:Solanum / Q000235:genetics; D014131:Trace Elements / Q000032:analysis
chemical_list: D008903:Minerals; D014131:Trace Elements