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Map** of quantitative trait loci for the nutritional value of fresh market tomato

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Abstract

The incidence of many diseases, such as cancer, cardiovascular diseases, and diabetes, is associated with malnutrition and an unbalanced daily diet. Vegetables are an important source of vitamins and essential compounds for human health. As a result, such metabolites have increasingly become the focus of breeding programs. Tomato is one of the most popular components of our daily diet. Therefore, the improvement of tomato’s nutritional quality is an important goal. In the present study, we performed targeted metabolic profiling of an interspecific Solanum pimpinellifolium × S. lycopersicum inbred backcross line (IBL) population and identified quantitative trait loci responsible for the nutritional value of tomato. Transgressive segregation was apparent for many of the nutritional compounds such that some IBLs had extremely high levels of various amino acids and vitamins compared to their parents. A total of 117 QTLs for nutritional traits including 62 QTLs for amino acids, 18 QTLs for fatty acids, 12 QTLs for water-soluble vitamins, and 25 QTLs for fat-soluble vitamins were identified. Moreover, almost 24% of identified QTLs were confirmed in previous studies, and 40 possible gene candidates were found for 18 identified QTLs. These findings can help breeders to improve the nutritional value of tomato.

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Supporting data are available upon request from the corresponding author.

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Acknowledgements

We thank MULTİ Tarım Seed Company for their help in growing the plants in the field.

Funding

This research was funded by a grant from the Scientific and Technological Research Council of Turkey (TÜBİTAK, project number: 114Z116) and the Republic of Turkey Ministry of Agriculture and Forestry, General Directorate of Agricultural Research Institute (TAGEM-16/AR-GE/03).

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N.G.C. performed metabolite analysis, analyzed data, and drafted and revised the manuscript. N.T.E. performed metabolite analysis. M.U. grew plants and provided analyzed materials. A.F. supervised research and data analysis, revised manuscript. S.D. devised research, obtained funding, supervised research, and revised the manuscript. All authors reviewed the manuscript.

Corresponding author

Correspondence to Sami Doğanlar.

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The authors declare no competing interests.

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Çolak, N.G., Eken, N.T., Ülger, M. et al. Map** of quantitative trait loci for the nutritional value of fresh market tomato. Funct Integr Genomics 23, 121 (2023). https://doi.org/10.1007/s10142-023-01045-9

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  • DOI: https://doi.org/10.1007/s10142-023-01045-9

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