| Title: | Genome-wide association study unravels the genetic control of the apple volatilome and its interplay with fruit texture |
| Author(s): | Farneti B; Di Guardo M; Khomenko I; Cappellin L; Biasioli F; Velasco R; Costa F; |
| Address: | "Research and Innovation Centre, Fondazione Edmund Mach, via Mach 1, 38010 San Michele all'Adige, Trento,Italy. Research and Innovation Centre, Fondazione Edmund Mach, via Mach 1, 38010 San Michele all'Adige, Trento, Italy. Graduate School Experimental Plant Sciences, Wageningen University, PO Box 386, 6700 AJ Wageningen, The Netherlands. Institute for Ion Physics and Applied Physics, University of Innsbruck, Technikerstr. 25/3, 6020 Innsbruck, Austria" |
| ISSN/ISBN: | 1460-2431 (Electronic) 0022-0957 (Print) 0022-0957 (Linking) |
| Abstract: | "Fruit quality represents a fundamental factor guiding consumers' preferences. Among apple quality traits, volatile organic compounds and texture features play a major role. Proton Transfer Reaction-Time of Flight-Mass Spectrometry (PTR-ToF-MS), coupled with an artificial chewing device, was used to profile the entire apple volatilome of 162 apple accessions, while the fruit texture was dissected with a TAXT-AED texture analyzer. The array of volatile compounds was classed into seven major groups and used in a genome-wide association analysis carried out with 9142 single nucleotide polymorphisms (SNPs). Marker-trait associations were identified on seven chromosomes co-locating with important candidate genes for aroma, such as MdAAT1 and MdIGS. The integration of volatilome and fruit texture data conducted with a multiple factor analysis unraveled contrasting behavior, underlying opposite regulation of the two fruit quality aspects. The association analysis using the first two principal components identified two QTLs located on chromosomes 10 and 2, respectively. The distinction of the apple accessions on the basis of the allelic configuration of two functional markers, MdPG1 and MdACO1, shed light on the type of interplay existing between fruit texture and the production of volatile organic compounds" |
| Keywords: | "Fruit/*genetics/physiology *Genome-Wide Association Study Malus/*genetics/physiology Odorants/*analysis Phenotype Polymorphism, Single Nucleotide *Quantitative Trait Loci Volatile Organic Compounds/*metabolism Ester Gwas PTR-ToF-MS Snp VOCs.fruit texture;" |
| Notes: | "MedlineFarneti, Brian Di Guardo, Mario Khomenko, Iuliia Cappellin, Luca Biasioli, Franco Velasco, Riccardo Costa, Fabrizio eng England 2017/03/25 J Exp Bot. 2017 Mar 1; 68(7):1467-1478. doi: 10.1093/jxb/erx018" |
