6533b863fe1ef96bd12c78de
RESEARCH PRODUCT
Genetic diversity in a collection of Italian long storage tomato landraces as revealed by SNP markers array
Valentina Tranchida-lombardoMariano AvinoMarina TucciPaola PunzoCristina PatanèFrancesco SunseriIgnazio PomaFrancesco MercatiStefania GrilloMario Rosario GuarracinoMaria Carola Fioresubject
0106 biological sciences0301 basic medicineGermplasmdrought toleranceSingle-nucleotide polymorphismPlant ScienceBiology01 natural sciences03 medical and health sciencesSettore AGR/07 - Genetica AgrariaGenetic variationAlleleEcology Evolution Behavior and SystematicsGenetic diversitybusiness.industryfungifruit qualityfood and beveragesbiology.organism_classificationSettore AGR/02 - Agronomia E Coltivazioni Erbaceedrought tolerance; fruit quality; shelf life; Solanum lycopersicum germplasm; SolCAP Infinium arrayBiotechnologySolanum lycopersicum germplasm030104 developmental biologyGenetic distanceGenetic markerSolanum lycopersicum germplasm shelf life SolCAP Infinium array fruit quality drought toleranceshelf lifeSolanumSolCAP Infinium arraybusiness010606 plant biology & botanydescription
Tomato (Solanum lycopersicum L.) is one of the most important crops worldwide. In this study, we used 7720 genome-wide SNPs to characterize the genetic diversity within a tomato germplasm collection enriched with 64 accessions from southern Italy of the so called "da serbo" type i.e. drought-tolerant and long storage landraces. Notwithstanding the relatively small collection area, 1575 (20.4%) polymorphic SNPs, mostly on Chr11, detected considerable levels of genetic variation. Maximum parsimony analysis of genetic distance revealed four main clusters and clearly separated most "da serbo" landraces from the outgroups. One of the clusters grouped the landraces from the Mount Vesuvius area, though no further indications of a geographic-specific structure were found. STRUCTURE analysis confirmed the presence of four genetic groups within the collection, with admixture between them. A survey of non-synonymous SNPs highlighted several mutations in genes related to stress tolerance and fruit maturation/quality. Overall, our results suggest possible exchange of "da serbo" genetic material between southern Italy regions and indicate that the long storage "da serbo" germplasm could be a promising reservoir of peculiar alleles for traits of interest.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 | Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology |