Alatawi, I.; Xiong, H.; Alkabkabi, H.; Chiwina, K.; Luo, Q.; Ling, K.-S.; Qu, Y.; Du, R.; Shi, A. Genetic Diversity and Population Structure of Tomato (Solanum lycopersicum). Preprints2024, 2024102604. https://doi.org/10.20944/preprints202410.2604.v1
APA Style
Alatawi, I., Xiong, H., Alkabkabi, H., Chiwina, K., Luo, Q., Ling, K. S., Qu, Y., Du, R., & Shi, A. (2024). Genetic Diversity and Population Structure of Tomato (Solanum lycopersicum). Preprints. https://doi.org/10.20944/preprints202410.2604.v1
Chicago/Turabian Style
Alatawi, I., Renjie Du and Ainong Shi. 2024 "Genetic Diversity and Population Structure of Tomato (Solanum lycopersicum)" Preprints. https://doi.org/10.20944/preprints202410.2604.v1
Abstract
This study aimed to determine gene pool structure in the tomato (Solanum lycopersicum) along with the relationships of populations in different regions. To do so, it leveraged 276 diverse cultivated accessions representing 35 countries, obtained via the USDA-GRIN tomato germplasm collection. Single nucleotide polymorphisms (SNPs) in these accessions were detected by sequencing, and genetic diversity, population structure, and phylogenetic relationships were estimated from the SNP alleles. The results of model-based ancestry analysis, phylogenetic tree construction, and principal component analysis supported these accessions as representing three well-differentiated genetic populations. Phylogenetic analyses traced the accessions back to their regions of origin, highlighting Central and South America as the primary center of domestication, with secondary centers in Europe and North America. This study provides a comprehensive analysis of the genetic variation in and relationships among cultivated tomato genotypes. The findings are of benefit to curators, researchers, and breeders in understanding, utilizing, conserving, and managing the collection, and in thereby contributing more efficiently to international tomato research.
Keywords
tomato; Solanum lycopersicum; single nucleotide polymorphism (SNP); population structure; genetic diversity
Subject
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
