This thesis was part of a collaborative project between the University of Padua and the Edmund Mach Foundation (F.E.M.). It focused on the study of Sangiovese and Montepulciano clonal varieties of grapevines. The objective was to identify the VOCs (Volatile Organic Compounds) emitted by the leaves of these Vitis vinifera varieties under recovery conditions after water stress. The Montepulciano TEA 5 clone showed a marked response, with an increase in defense-related VOCs such as β-ocimene, o-cymene, DMHT, and benzaldehyde. In contrast, the Montepulciano Ampelos TEA 21 clone demonstrated greater drought resistance than the former variety, but still less than the Sangiovese varieties. A significant variation in the compound 5-methyl-1-hexene was noted in both clones. This compound is known for its signaling function and its role in defense against biotic stress. The two Sangiovese clonal varieties, Ampelos TEA 10D and ISV RC 1, proved to be more acclimation-prone and did not show significant alterations in VOC emissions. These results provide useful information for the application of genetic and agronomic improvement strategies.
La seguente tesi è stata inserita in un progetto di collaborazione tra l’Università di Padova e la Fondazione Edmund Mach (F.E.M.). Si è focalizzata sullo studio delle varietà clonali di vite Sangiovese e Montepulciano. L’obiettivo è stato identificare i VOCs (Volatile Organic Compounds) emessi dalle foglie di queste varietà di Vitis vinifera in condizioni di recovery dopo uno stress idrico. Il clone Montepulciano TEA 5 ha avuto una risposta marcata, con un aumento dei VOCs coinvolti nella difesa come β-ocimene, o-cimene, DMHT e benzaldeide. Il clone Montepulciano Ampelos TEA 21 ha mostrato invece una maggior resistenza alla siccità rispetto alla varietà precedente, ma comunque inferiore rispetto alle varietà di Sangiovese. In entrambi i cloni si notata una variazione significativa del composto 5-methyl-1-hexene, noto per la sua funzione di segnalazione e la sua funzione di difesa da stress biotici. Le due varietà clonali di Sangiovese, Ampelos TEA 10D e ISV RC 1, si sono dimostrate essere più tendenti all’acclimatazione. Non hanno mostrato dunque alterazioni significative nelle emissioni di VOCs. Questi risultati forniscono informazioni utili per l’applicazione di strategie di miglioramento genetico e agronomico.
Analisi comparativa dei composti organici volatili durante il recupero da stress idrico nelle varietà clonali di vite Sangiovese e Montepulciano
MENEGAZZO, SAMUELE
2024/2025
Abstract
This thesis was part of a collaborative project between the University of Padua and the Edmund Mach Foundation (F.E.M.). It focused on the study of Sangiovese and Montepulciano clonal varieties of grapevines. The objective was to identify the VOCs (Volatile Organic Compounds) emitted by the leaves of these Vitis vinifera varieties under recovery conditions after water stress. The Montepulciano TEA 5 clone showed a marked response, with an increase in defense-related VOCs such as β-ocimene, o-cymene, DMHT, and benzaldehyde. In contrast, the Montepulciano Ampelos TEA 21 clone demonstrated greater drought resistance than the former variety, but still less than the Sangiovese varieties. A significant variation in the compound 5-methyl-1-hexene was noted in both clones. This compound is known for its signaling function and its role in defense against biotic stress. The two Sangiovese clonal varieties, Ampelos TEA 10D and ISV RC 1, proved to be more acclimation-prone and did not show significant alterations in VOC emissions. These results provide useful information for the application of genetic and agronomic improvement strategies.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/91542