Identification of quantitative trait loci and candidate genes for primary metabolite content in strawberry fruit

Abstract

Selective breeding: The genetic basis of better strawberries Investigations have yielded early insights into the genetic basis of strawberry taste and nutrition. Such information informs efforts to selectively breed the fruit to maximize these qualities. A team of researchers from Spain and Germany, led by the University of Malaga’s Sonia Osorio and the IFAPA´s Iraida Amaya, found 133 locations within strawberry DNA that correlated to variation in metabolic pathways and desirable traits including acidity, sugar content, and the concentration of l-ascorbic acid (vitamin C). Only a small number of associations persisted over the 2 years of investigations, suggesting that environmental factors also wield a significant influence over the strawberry fruit’s molecular makeup. The team then used their data to identify a series of candidate genes that may be functionally linked to strawberry qualities; however, further research is needed to validate those connections.