RT Journal Article
T1 Identification of quantitative trait loci and candidate genes for primary metabolite content in strawberry fruit
A1 Pott, DM
A1 Cruz-Rus, E
A1 Miranda, L
A1 Medina-Minguez, JJ
A1 Valpuesta-Fernández, Victoriano
A1 Fernie, AR
A1 Sanchez-Sevilla, JF
A1 Osorio-Algar, Sonia
A1 Amaya, I
K1 Fresas
AB Improvement of nutritional and organoleptic quality of fruits is a key goal in current strawberry breeding programs.The ratio of sugars to acids is a determinant factor contributing to fruit liking, although different sugars and acidscontribute in varying degrees to this complex trait. A segregating F1 population of 95 individuals, previouslycharacterized for several fruit quality characters, was used to map during 2 years quantitative trait loci (QTL) for 50primary metabolites, L -ascorbic acid (L-AA) and other related traits such as soluble solid content (SSC), titratable acidity(TA), and pH. A total of 133 mQTL were detected above the established thresholds for 44 traits. Only 12.9% of QTLwere detected in the 2 years, suggesting a large environmental influence on primary metabolite content. An objectiveof this study was the identification of key metabolites that were associated to the overall variation in SSC and acidity.As it was observed in previous studies, a number of QTL controlling several metabolites and traits were co-located inhomoeology group V (HG V). mQTL controlling a large variance in raffinose, sucrose, succinic acid, and L-AA weredetected in approximate the same chromosomal regions of different homoeologous linkage groups belonging to HGV. Candidate genes for selected mQTL are proposed based on their co-localization, on the predicted function, andtheir differential gene expression among contrasting F1 progeny lines. RNA-seq analysis from progeny lines contrastingin L-AA content detected 826 differentially expressed genes and identified Mannose-6-phosphate isomerase, FaM6PI1,as a candidate gene contributing to natural variation in ascorbic acid in strawberry fruit
YR 2019
FD 2019
LK https://hdl.handle.net/10630/34340
UL https://hdl.handle.net/10630/34340
LA eng
NO Vallarino, J. G., Pott, D. M., Cruz-Rus, E., Miranda, L., Medina-Minguez, J. J., Valpuesta, V., ... & Amaya, I. (2019). Identification of quantitative trait loci and candidate genes for primary metabolite content in strawberry fruit. Horticulture research, 6.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026