1. Facilitating green care improvements in viticultureMelita Sternad Lemut, Lorena Butinar, Adesida Rowland, Urban Česnik, Tjaša Jug, Paolo Sivilotti, Urška Vrhovšek, 2019, published scientific conference contribution Abstract: The growing demand of consumers for environment-friendly and safe food products already forced many winemakers to restrict the application of synthetic fungicides to earlier season, trying to reduce the risk of residues being detected in wines. Main risk for infection by B. cinerea, however, occurs later in the season. To support an improvement in whole-season B. cinerea green care, the potential of yeasts as biocontrol agent (PBA) was studied. Selected yeasts were tested for their antifungal activities. Furthermore, a field experiment in Pinot noir and Pinot gris vineyards was designed to study different combinations of optimized canopy microclimate manipulation (CMM) techniques and PBA application. In experimental conditions, PBA's ability to maintain appropriate population density for disease prevention was observed. Grape and wine quality parameters were evaluated. Analytical approach of metabolomics was applied to upgrade the understanding of potentially induced changes in plant metabolism.
Based on yeasts testing results, biocontrol yeast P. guilliermondii ZIM 624 was selected and after its field application, we were able to detect its suitable density on grapes until harvest. In case of early defoliation for both varieties smaller grape compactness was confirmed together with lower yield. Among grape basic quality parameters, optimized techniques showed positive effect on sugar content, but unexpectedly, in the treatments with biocontrol yeasts the trends toward higher acidity were noticed in Pinot gris. CMM and PBA introduction indicated some effects on grapevine biosynthetic behaviour but the differences in content of these metabolites compared to control were poorly detected in final wines with exception of mainly some flavonols, stilbenes and flavan-3-ols (and consequently total phenolic content).
Keywords: sustainable viticulture, Botrytis cinerea, yeasts, biocontrol, canopy microclimate manipulation, metabolomics, grapevine metabolites
Published in RUNG: 28.02.2020; Views: 4836; Downloads: 0
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2. Study of grapevine early leaf removal sustainability potential by means of targeted metabolomic approachMelita Sternad Lemut, Paolo Sivilotti, Lorena Butinar, Ajda Lemut, Urška Vrhovšek, 2017, published scientific conference contribution abstract Keywords: Pinot gris, early leaf removal, sustainable viticulture, grape compactness, targeted metabolomics, phenolic compounds
Published in RUNG: 21.09.2017; Views: 5981; Downloads: 0
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3. Alternativne vinogradniške in vinarske tehnologije: kakovostni, trajnostni in senzorični potencial : /Melita Sternad Lemut, Paolo Sivilotti, Lorena Butinar, Jana Laganis, Urška Vrhovšek, 2017, published scientific conference contribution abstract (invited lecture) Keywords: odstajevanju listov v predelu grozdov, trajnostno vinogradništvo, Botrytis cinerea, mikrobna ekologija vinske trte, alternativne vinarske tehnologije, senzorika vina.
Published in RUNG: 29.06.2017; Views: 6091; Downloads: 258
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5. Phenolic profile and effect of regular consumption of Brazilian red wines on in vivo antioxidant activityUrška Vrhovšek, Fulvio Mattivi, E. F. Gris, Eduardo Antonio Ferreira, Danilo Wilhelm Filho, R. C. Pedrosa, Marilde T. Bordigon-Luiz, 2013, original scientific article Keywords: vinska trta, vino, antioksidacija, fenolne spojine
Published in RUNG: 09.05.2017; Views: 6023; Downloads: 41
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9. Targeted metabolomics employed for the studying of 'Pinot Noir' grape skin phenolics as induced by canopy microclimate manipulationMelita Sternad Lemut, Paolo Sivilotti, Pietro Franceschi, Ron Wehrens, Urška Vrhovšek, 2013, published scientific conference contribution abstract Keywords: tarčna metabolomika, Modri pinot, razlistanje, polifenoli, vinska trta
Published in RUNG: 05.08.2014; Views: 7152; Downloads: 55
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10. Canopy microclimate manipulation in the sustainable management of 'Pinot Noir' vineyard from Vipava valley : dissertationMelita Sternad Lemut, 2014, doctoral dissertation Keywords: Modri pinot, manipulacija mikroklime, grm vinske trte, odstranjevanje listov, profiliranje metabolitov, metabolomika, sekundarni metaboliti, polifenoli, izoprenoidi, mikrobna ekologija, fungicidi, trajnostno vinogradništvo, Vipavska dolina, disertacije
Published in RUNG: 25.04.2014; Views: 7494; Downloads: 151
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