The shelf-life is the maximum period of time within which a food product can be kept on the market in optimal quality and safety conditions following the correct storage methods. The aim of the thesis work was to develop a method for the screening of the "shelf-life" trait in widely distributed varieties of melon. To this aim, melon varieties characterized by "long shelf life" and "short shelf life" were subjected to next-generation sequencing (NGS) to identify molecular markers associated with this trait. Sequencing enabled the selection of 192 single nucleotide polymorphisms (SNPs) located in genes associated with the “long shelf-life” trait. The validation of these markers through the use of "High Resolution Melting" technology subsequently allowed the identification of an SNP marker (SNP15) significantly associated (p <0.01) with the "long shelf-life" character. This marker can be used both for the selection of new melon varieties and for monitoring the shelf-life of the varieties currently available on the market.
La shelf-life è il periodo di tempo massimo entro il quale un prodotto alimentare può essere mantenuto in commercio in condizioni ottimali di qualità e di sicurezza seguendo le corrette modalità di conservazione. Lo scopo del lavoro di tesi è stato quello di mettere a punto un metodo per lo screening del carattere “shelf-life” in varietà di melone ad ampia diffusione commerciale. A tal fine, varietà di melone caratterizzate da “long shelf life” e “short shelf life” sono state sottoposte a sequenziamento di nuova generazione (NGS) per identificare marcatori molecolari associati a questa caratteristica. Il sequenziamento ha consentito di selezionare 192 polimorfismi di singolo nucleotide (SNP) localizzati in geni associati con il carattere “long shelf-life”. La validazione di questi marcatori mediante l’impiego della tecnologia “High Resolution Melting” ha successivamente consentito l’identificazione di un marcatore SNP (SNP15) significativamente associato (p<0.01) con il carattere “long shelf-life”. Questo marcatore potrà essere utilizzato sia per la selezione di nuove varietà di melone sia per il monitoraggio della shelf-life delle varietà attualmente disponibili sul mercato.
Gestione della qualità e conservazione dei prodotti alimentari: impiego di un marcatore molecolare SNP associato alla shelf-life in Cucumis melo L.
BRENDOLIN, MATTIA
2021/2022
Abstract
The shelf-life is the maximum period of time within which a food product can be kept on the market in optimal quality and safety conditions following the correct storage methods. The aim of the thesis work was to develop a method for the screening of the "shelf-life" trait in widely distributed varieties of melon. To this aim, melon varieties characterized by "long shelf life" and "short shelf life" were subjected to next-generation sequencing (NGS) to identify molecular markers associated with this trait. Sequencing enabled the selection of 192 single nucleotide polymorphisms (SNPs) located in genes associated with the “long shelf-life” trait. The validation of these markers through the use of "High Resolution Melting" technology subsequently allowed the identification of an SNP marker (SNP15) significantly associated (p <0.01) with the "long shelf-life" character. This marker can be used both for the selection of new melon varieties and for monitoring the shelf-life of the varieties currently available on the market.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/32273