| Naslov: | Combined effects of early season leaf removal and climatic conditions on aroma precursors in ‘Sauvignon blanc’ grapes |
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| Avtorji: | Sivilotti, Paolo (Avtor)
FALCHI, Rachele (Avtor)
HERRERA, Jose Carlos (Avtor)
Škvarč, Branka (Avtor)
Butinar, Lorena (Avtor)
Sternad Lemut, Melita (Avtor)
Bubola, Marijan (Avtor)
SABBATINI, Paolo (Avtor)
Lisjak, Klemen (Avtor)
Vanzo, Andreja (Avtor) |
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| Datoteke: | Gradivo nima datotek. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u.  |
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Delo ni kategorizirano (r6) |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | UNG - Univerza v Novi Gorici |
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| Opis: | Early leaf removal around the cluster zone is a common technique applied in cool climate viticulture, to regulate yield components and improve fruit quality. Despite the increasing amount of information on early leaf removal and its impact on total soluble solids, anthocyanins and polyphenols, less is known regarding aroma compounds. In order to verify the hypothesis that defoliation, applied before or after flowering, could impact the biosynthesis of thiol precursors, we performed a two year (2013 and 2014) experiment on Sauvignon blanc. We provided evidence that differential accumulation of thiols precursors in berries is affected by the timing of defoliation and this impact was related to modifications in biosynthetic pathway. Furthermore, the possible interaction between leaf removal treatment and seasonal weather conditions, and its effect on the biosynthesis of volatile precursors are discussed. Our results suggested that in Sauvignon blanc the relative proportion of 4-S-glutathionyl-4-methylpentan-2-one (G-4MSP) and 3-S-glutathionylhexan-1-ol (G-3SH) precursors can be affected by defoliation, and this could be related to the induction of two specific genes encoding glutathione-S-transferases (VvGST3 and VvGST5), while no significant effects on basic fruit chemical parameters, polyphenols and methoxypyrazines were ascertained under our experimental conditions. |
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| Ključne besede: | early leaf removal, cluster exposure, thiol precursors, methoxypyrazines, glutathione S-transferase, Vitis vinifera |
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| Leto izida: | 2017 |
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| Št. strani: | 32 |
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| Številčenje: | objava na spletni strani, v pripravi |
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| COBISS_ID: | 4892155 |
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| URN: | URN:SI:UNG:REP:HIB0JKSX |
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| DOI: | 10.1021/acs.jafc.7b03508 |
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| Licenca: | 
To delo je dosegljivo pod licenco Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna |
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| Število ogledov: | 3508 |
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| Število prenosov: | 0 |
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| Metapodatki: |     |
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| Področja: | Gradivo ni uvrščeno v področja. |
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| | | | Skupna ocena: | (0 glasov) |
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| Vaša ocena: | Ocenjevanje je dovoljeno samo prijavljenim uporabnikom. |
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