RT article
T1 Evidence of the Role of QTL Epistatic Interactions in the Increase of Melon Fruit Flesh Content during Domestication
A1 Riahi, Chaymaa
A1 Reig-Valiente, Juan L.
A1 Picó, Belén
A1 Díaz, Aurora
A1 Gonzalo, María J.
A1 Monforte, Antonio J.
K1 QTL cloning
K1 Fine mapping
K1 F30  Plant genetics and breeding
K1 Cucumis melo
K1 Epistasis
K1 Pericarp
AB Cultivated melon was domesticated from wild melons, which produce small fruits withnon-edible fruit flesh. The increase in fruit flesh is one of the major domestication achievements inthis species. In previous work, a quantitative trait locus (QTL) on chromosome 6 (paqt6.1) linked tofruit flesh content was detected in a cross between cultivated (“Piel de Sapo”, PS) and wild (Ames24294, TRI) accessions. The QTL was introgressed into the PS background, generating the TRI_6-3introgression line (IL) that confirmed the e ects of paqt6.1. The primary objective of this work was tofine-map paqt6.1 as the first step for the map-based cloning. Two di erent approaches were carriedout; however, the results were not consistent, precluding the fine mapping of paqt6.1. TRI_6-3 andother related ILs were genotyped by genotyping-by-sequencing, finding additional introgressionsin other chromosomes. In an F2 population from TRI_6-3-x-PS, we found an epistatic interactionbetween paqt6.1 and another locus on chromosome 11. The interaction was verified in advancedpopulations, suggesting that the e ects of paqt6.1 are conditioned by the allelic composition at anotherlocus in chromosome 11. Both loci should have TRI alleles to reduce the flesh content in the PSbackground. The implications on the history of melon domestication are discussed.
PB MDPI
SN 2073-4395
YR 2020
FD 2020
LK http://hdl.handle.net/20.500.11939/6651
UL http://hdl.handle.net/20.500.11939/6651
LA en
NO Riahi, C., Reig-Valiente, J. L., Picó, B., Díaz, A., Gonzalo, M. J., & Monforte, A. J. (2020). Evidence of the Role of QTL Epistatic Interactions in the Increase of Melon Fruit Flesh Content during Domestication. Agronomy, 10(8), 1064.
DS MINDS@UW
RD Aug 15, 2022