QTL mapping of volatile compounds in ripe apples detected by proton transfer reaction-mass spectrometry |
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| Authors: | Elena?Zini Franco?Biasioli Flavia?Gasperi Daniela?Mott Eugenio?Aprea Tilmann?D?M?rk Andrea?Patocchi Cesare?Gessler Email author" target="_blank">Matteo?KomjancEmail author |
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| Institution: | 1.Istituto Agrario di S. Michele all'Adige,S. Michele all'Adige,Italy;2.Institut für Ionenphysik,Universit?t Innsbruck,Innsbruck,Austria;3.Department of Plasmaphysics,University of Bratislava,Bratislava,Slovak Republic;4.Institute of Plant Sciences,Swiss Federal Institute of Technology,Zürich,Switzerland;5.SafeCrop center,Istituto Agrario di S. Michele all'Adige,S. Michele all'Adige,Italy |
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| Abstract: | The availability of genetic linkage maps enables the detection and analysis of QTLs contributing to quality traits of the
genotype. Proton Transfer Reaction Mass Spectrometry (PTR-MS), a relatively novel spectrometric technique, has been applied
to measure the headspace composition of the Volatile Organic Compounds (VOCs) emitted by apple fruit genotypes of the progeny
‘Fiesta’ × ‘Discovery’. Fruit samples were characterised by their PTR-MS spectra normalised to total area. QTL analysis for
all PTR-MS peaks was carried out and 10 genomic regions associated with the peaks at m/z = 28, 43, 57, 61, 103, 115 and 145 were identified (LOD > 2.5). We show that it is possible to find quantitative trait loci
(QTLs) related to PTR-MS characterisation of the headspace composition of single whole apple fruits indicating the presence
of a link between molecular characterisation and PTR-MS data. We provide tentative information on the metabolites related
to the detected QTLs based on available chemical information. A relation between apple skin colour and peaks related to carbonyl
compounds was established.
The two authors contributed equally to this work. |
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| Keywords: | linkage map Malus on-line headspace analysis PTR-MS QTLs Volatile Organic Compounds |
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