The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Frode Oppedal - One of the best experts on this subject based on the ideXlab platform.
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surface environment modification in atlantic salmon sea cages effects on amoebic gill disease salmon lice growth and welfare
Aquaculture Environment Interactions, 2018Co-Authors: Daniel William Wright, Lena Geitung, Egil Karlsbakk, Lars Helge Stien, Tim Dempster, Tina Oldham, Velimir Nola, Frode OppedalAbstract:Surface environment modification is a potential parasite control strategy in Atlantic salmon sea-cage farming. For instance, a temporary low salinity surface layer in commercial-scale snorkel sea-cages has coincided with reduced amoebic gill disease (AGD) levels after an outbreak. We tested if a permanent freshwater (FW) surface layer in snorkel sea-cages would lower AGD and salmon lice levels of stock relative to snorkel cages with seawater (SW) only and standard production cages with no snorkels. Triplicate cages of each type with 2000 post-smolts were monitored in autumn to winter for 8 wk and sampled 4 times. Lower proportions of individuals with elevated AGD-related gill scores were registered in SW and FW snorkel cages compared to standard cages; however, these proportions did not differ between SW and FW snorkel cages. Individuals positive for AGD-causing Paramoeba perurans were reduced by 65% in FW snorkel relative to standard cages, but values were similar between SW snorkel cages and other types. While total lice burdens were reduced by 38% in SW snorkel compared to standard cages, they were unchanged between FW snorkel and other cage types. Fish welfare and growth were unaffected by cage type. Surface activity was detected in all cages; however, more surface jumps were recorded in standard than snorkel cages. Overall, fish in FW snorkel cages appeared to reside too little in freshwater to consistently reduce AGD levels and salmon lice compared to SW snorkel cages. Further work should test behavioural and environmental manipulations aimed at increasing freshwater or low salinity surface layer use.
Benjamin Houillé - One of the best experts on this subject based on the ideXlab platform.
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mechanical stress rapidly induces e resveratrol and e piceatannol biosynthesis in grape Canes stored as a freshly pruned byproduct
Food Chemistry, 2018Co-Authors: Kevin Billet, Benjamin Houillé, Sébastien Besseau, Audrey Oudin, Nicolas Papon, Marc Clastre, Vincent Courdavault, Céline Melin, Nathalie Giglioliguivarch, Arnaud LanoueAbstract:Grape Canes represent a promising source of bioactive phytochemicals. However the stabilization of the raw material after pruning remains challenging. We recently reported the induction of stilbenoid metabolism after winter pruning including a strong accumulation of E-resveratrol and E-piceatannol during the first six weeks of storage. In the present study, the effect of mechanical wounding on freshly-pruned Canes was tested to increase the induction of stilbenoid metabolism. Cutting the grape Canes in short segments immediately after pruning triggered a transient expression of phenylalanine ammonia-lyase (PAL) and stilbene synthase (STS) genes, followed by a rapid accumulation of E-resveratrol and E-piceatannol. The degree of stilbenoid induction was related to the intensity of mechanical wounding. Data suggest that a global defense response is triggered involving jasmonate signaling, PR proteins and stilbenoid metabolism. Mechanical wounding of freshly-pruned Canes drastically shortens the time required to reach maximal stilbenoid accumulation from 6 to 2weeks.
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Mechanical stress rapidly induces E-resveratrol and E-piceatannol biosynthesis in grape Canes stored as a freshly-pruned byproduct
Food Chemistry, 2018Co-Authors: Kevin Billet, Benjamin Houillé, Sébastien Besseau, Audrey Oudin, Nicolas Papon, Marc Clastre, Vincent Courdavault, Céline Melin, Nathalie Giglioli-guivarc'h, Arnaud LanoueAbstract:Grape Canes represent a promising source of bioactive phytochemicals. However the stabilization of the raw material after pruning remains challenging. We recently reported the induction of stilbenoid metabolism after winter pruning including a strong accumulation of E-resveratrol and E-piceatannol during the first six weeks of storage. In the present study, the effect of mechanical wounding on freshly-pruned Canes was tested to increase the induction of stilbenoid metabolism. Cutting the grape Canes in short segments immediately after pruning triggered a transient expression of phenylalanine ammonia-lyase (PAL) and stilbene synthase (STS) genes, followed by a rapid accumulation of E-resveratrol and E-piceatannol. The degree of stilbenoid induction was related to the intensity of mechanical wounding. Data suggest that a global defense response is triggered involving jasmonate signaling, PR proteins and stilbenoid metabolism. Mechanica
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Composition and Tissue-Specific Distribution of Stilbenoids in Grape Canes Are Affected by Downy Mildew Pressure in the Vineyard.
Journal of agricultural and food chemistry, 2015Co-Authors: Benjamin Houillé, Sébastien Besseau, Guillaume Delanoue, Audrey Oudin, Nicolas Papon, Marc Clastre, Andrew J. Simkin, Laurence Guérin, Vincent Courdavault, Nathalie Giglioli-guivarc’hAbstract:Grape Canes are byproducts of viticulture containing valuable bioactive stilbenoids including monomers and oligomers of E-resveratrol. Although effective contents in stilbenoids are known to be highly variable, the determining factors influencing this composition remain poorly understood. As stilbenoids are locally induced defense compounds in response to phytopathogens, this study assessed the impact of downy mildew infection during the growing season on the stilbenoid composition of winter-harvested grape Canes. The spatial distribution between pith, conducting tissues, and cortex of E-piceatannol, E-resveratrol, E-ε-viniferin, ampelopsin A, E-miyabenol C, Z/E-vitisin B, hopeaphenol, and isohopeaphenol in grape Canes from infected vineyards was strongly altered. In conducting tissues, representing the main site of stilbenoid accumulation, E-ε-viniferin content was higher and E-resveratrol content was lower. These findings suppose that the health status in vineyards could modify the composition of stilbenoids in winter-harvested grape Canes and subsequently the potential biological properties of the valuable extracts.
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composition and tissue specific distribution of stilbenoids in grape Canes are affected by downy mildew pressure in the vineyard
Journal of Agricultural and Food Chemistry, 2015Co-Authors: Benjamin Houillé, Sébastien Besseau, Guillaume Delanoue, Audrey Oudin, Nicolas Papon, Marc Clastre, Andrew J. Simkin, Laurence Guérin, Vincent Courdavault, Nathalie GiglioliguivarchAbstract:Grape Canes are byproducts of viticulture containing valuable bioactive stilbenoids including monomers and oligomers of E-resveratrol. Although effective contents in stilbenoids are known to be highly variable, the determining factors influencing this composition remain poorly understood. As stilbenoids are locally induced defense compounds in response to phytopathogens, this study assessed the impact of downy mildew infection during the growing season on the stilbenoid composition of winter-harvested grape Canes. The spatial distribution between pith, conducting tissues, and cortex of E-piceatannol, E-resveratrol, E-e-viniferin, ampelopsin A, E-miyabenol C, Z/E-vitisin B, hopeaphenol, and isohopeaphenol in grape Canes from infected vineyards was strongly altered. In conducting tissues, representing the main site of stilbenoid accumulation, E-e-viniferin content was higher and E-resveratrol content was lower. These findings suppose that the health status in vineyards could modify the composition of stilbenoids in winter-harvested grape Canes and subsequently the potential biological properties of the valuable extracts.
Nicolas Papon - One of the best experts on this subject based on the ideXlab platform.
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mechanical stress rapidly induces e resveratrol and e piceatannol biosynthesis in grape Canes stored as a freshly pruned byproduct
Food Chemistry, 2018Co-Authors: Kevin Billet, Benjamin Houillé, Sébastien Besseau, Audrey Oudin, Nicolas Papon, Marc Clastre, Vincent Courdavault, Céline Melin, Nathalie Giglioliguivarch, Arnaud LanoueAbstract:Grape Canes represent a promising source of bioactive phytochemicals. However the stabilization of the raw material after pruning remains challenging. We recently reported the induction of stilbenoid metabolism after winter pruning including a strong accumulation of E-resveratrol and E-piceatannol during the first six weeks of storage. In the present study, the effect of mechanical wounding on freshly-pruned Canes was tested to increase the induction of stilbenoid metabolism. Cutting the grape Canes in short segments immediately after pruning triggered a transient expression of phenylalanine ammonia-lyase (PAL) and stilbene synthase (STS) genes, followed by a rapid accumulation of E-resveratrol and E-piceatannol. The degree of stilbenoid induction was related to the intensity of mechanical wounding. Data suggest that a global defense response is triggered involving jasmonate signaling, PR proteins and stilbenoid metabolism. Mechanical wounding of freshly-pruned Canes drastically shortens the time required to reach maximal stilbenoid accumulation from 6 to 2weeks.
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Mechanical stress rapidly induces E-resveratrol and E-piceatannol biosynthesis in grape Canes stored as a freshly-pruned byproduct
Food Chemistry, 2018Co-Authors: Kevin Billet, Benjamin Houillé, Sébastien Besseau, Audrey Oudin, Nicolas Papon, Marc Clastre, Vincent Courdavault, Céline Melin, Nathalie Giglioli-guivarc'h, Arnaud LanoueAbstract:Grape Canes represent a promising source of bioactive phytochemicals. However the stabilization of the raw material after pruning remains challenging. We recently reported the induction of stilbenoid metabolism after winter pruning including a strong accumulation of E-resveratrol and E-piceatannol during the first six weeks of storage. In the present study, the effect of mechanical wounding on freshly-pruned Canes was tested to increase the induction of stilbenoid metabolism. Cutting the grape Canes in short segments immediately after pruning triggered a transient expression of phenylalanine ammonia-lyase (PAL) and stilbene synthase (STS) genes, followed by a rapid accumulation of E-resveratrol and E-piceatannol. The degree of stilbenoid induction was related to the intensity of mechanical wounding. Data suggest that a global defense response is triggered involving jasmonate signaling, PR proteins and stilbenoid metabolism. Mechanica
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Composition and Tissue-Specific Distribution of Stilbenoids in Grape Canes Are Affected by Downy Mildew Pressure in the Vineyard.
Journal of agricultural and food chemistry, 2015Co-Authors: Benjamin Houillé, Sébastien Besseau, Guillaume Delanoue, Audrey Oudin, Nicolas Papon, Marc Clastre, Andrew J. Simkin, Laurence Guérin, Vincent Courdavault, Nathalie Giglioli-guivarc’hAbstract:Grape Canes are byproducts of viticulture containing valuable bioactive stilbenoids including monomers and oligomers of E-resveratrol. Although effective contents in stilbenoids are known to be highly variable, the determining factors influencing this composition remain poorly understood. As stilbenoids are locally induced defense compounds in response to phytopathogens, this study assessed the impact of downy mildew infection during the growing season on the stilbenoid composition of winter-harvested grape Canes. The spatial distribution between pith, conducting tissues, and cortex of E-piceatannol, E-resveratrol, E-ε-viniferin, ampelopsin A, E-miyabenol C, Z/E-vitisin B, hopeaphenol, and isohopeaphenol in grape Canes from infected vineyards was strongly altered. In conducting tissues, representing the main site of stilbenoid accumulation, E-ε-viniferin content was higher and E-resveratrol content was lower. These findings suppose that the health status in vineyards could modify the composition of stilbenoids in winter-harvested grape Canes and subsequently the potential biological properties of the valuable extracts.
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composition and tissue specific distribution of stilbenoids in grape Canes are affected by downy mildew pressure in the vineyard
Journal of Agricultural and Food Chemistry, 2015Co-Authors: Benjamin Houillé, Sébastien Besseau, Guillaume Delanoue, Audrey Oudin, Nicolas Papon, Marc Clastre, Andrew J. Simkin, Laurence Guérin, Vincent Courdavault, Nathalie GiglioliguivarchAbstract:Grape Canes are byproducts of viticulture containing valuable bioactive stilbenoids including monomers and oligomers of E-resveratrol. Although effective contents in stilbenoids are known to be highly variable, the determining factors influencing this composition remain poorly understood. As stilbenoids are locally induced defense compounds in response to phytopathogens, this study assessed the impact of downy mildew infection during the growing season on the stilbenoid composition of winter-harvested grape Canes. The spatial distribution between pith, conducting tissues, and cortex of E-piceatannol, E-resveratrol, E-e-viniferin, ampelopsin A, E-miyabenol C, Z/E-vitisin B, hopeaphenol, and isohopeaphenol in grape Canes from infected vineyards was strongly altered. In conducting tissues, representing the main site of stilbenoid accumulation, E-e-viniferin content was higher and E-resveratrol content was lower. These findings suppose that the health status in vineyards could modify the composition of stilbenoids in winter-harvested grape Canes and subsequently the potential biological properties of the valuable extracts.
Sébastien Besseau - One of the best experts on this subject based on the ideXlab platform.
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mechanical stress rapidly induces e resveratrol and e piceatannol biosynthesis in grape Canes stored as a freshly pruned byproduct
Food Chemistry, 2018Co-Authors: Kevin Billet, Benjamin Houillé, Sébastien Besseau, Audrey Oudin, Nicolas Papon, Marc Clastre, Vincent Courdavault, Céline Melin, Nathalie Giglioliguivarch, Arnaud LanoueAbstract:Grape Canes represent a promising source of bioactive phytochemicals. However the stabilization of the raw material after pruning remains challenging. We recently reported the induction of stilbenoid metabolism after winter pruning including a strong accumulation of E-resveratrol and E-piceatannol during the first six weeks of storage. In the present study, the effect of mechanical wounding on freshly-pruned Canes was tested to increase the induction of stilbenoid metabolism. Cutting the grape Canes in short segments immediately after pruning triggered a transient expression of phenylalanine ammonia-lyase (PAL) and stilbene synthase (STS) genes, followed by a rapid accumulation of E-resveratrol and E-piceatannol. The degree of stilbenoid induction was related to the intensity of mechanical wounding. Data suggest that a global defense response is triggered involving jasmonate signaling, PR proteins and stilbenoid metabolism. Mechanical wounding of freshly-pruned Canes drastically shortens the time required to reach maximal stilbenoid accumulation from 6 to 2weeks.
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Mechanical stress rapidly induces E-resveratrol and E-piceatannol biosynthesis in grape Canes stored as a freshly-pruned byproduct
Food Chemistry, 2018Co-Authors: Kevin Billet, Benjamin Houillé, Sébastien Besseau, Audrey Oudin, Nicolas Papon, Marc Clastre, Vincent Courdavault, Céline Melin, Nathalie Giglioli-guivarc'h, Arnaud LanoueAbstract:Grape Canes represent a promising source of bioactive phytochemicals. However the stabilization of the raw material after pruning remains challenging. We recently reported the induction of stilbenoid metabolism after winter pruning including a strong accumulation of E-resveratrol and E-piceatannol during the first six weeks of storage. In the present study, the effect of mechanical wounding on freshly-pruned Canes was tested to increase the induction of stilbenoid metabolism. Cutting the grape Canes in short segments immediately after pruning triggered a transient expression of phenylalanine ammonia-lyase (PAL) and stilbene synthase (STS) genes, followed by a rapid accumulation of E-resveratrol and E-piceatannol. The degree of stilbenoid induction was related to the intensity of mechanical wounding. Data suggest that a global defense response is triggered involving jasmonate signaling, PR proteins and stilbenoid metabolism. Mechanica
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Composition and Tissue-Specific Distribution of Stilbenoids in Grape Canes Are Affected by Downy Mildew Pressure in the Vineyard.
Journal of agricultural and food chemistry, 2015Co-Authors: Benjamin Houillé, Sébastien Besseau, Guillaume Delanoue, Audrey Oudin, Nicolas Papon, Marc Clastre, Andrew J. Simkin, Laurence Guérin, Vincent Courdavault, Nathalie Giglioli-guivarc’hAbstract:Grape Canes are byproducts of viticulture containing valuable bioactive stilbenoids including monomers and oligomers of E-resveratrol. Although effective contents in stilbenoids are known to be highly variable, the determining factors influencing this composition remain poorly understood. As stilbenoids are locally induced defense compounds in response to phytopathogens, this study assessed the impact of downy mildew infection during the growing season on the stilbenoid composition of winter-harvested grape Canes. The spatial distribution between pith, conducting tissues, and cortex of E-piceatannol, E-resveratrol, E-ε-viniferin, ampelopsin A, E-miyabenol C, Z/E-vitisin B, hopeaphenol, and isohopeaphenol in grape Canes from infected vineyards was strongly altered. In conducting tissues, representing the main site of stilbenoid accumulation, E-ε-viniferin content was higher and E-resveratrol content was lower. These findings suppose that the health status in vineyards could modify the composition of stilbenoids in winter-harvested grape Canes and subsequently the potential biological properties of the valuable extracts.
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composition and tissue specific distribution of stilbenoids in grape Canes are affected by downy mildew pressure in the vineyard
Journal of Agricultural and Food Chemistry, 2015Co-Authors: Benjamin Houillé, Sébastien Besseau, Guillaume Delanoue, Audrey Oudin, Nicolas Papon, Marc Clastre, Andrew J. Simkin, Laurence Guérin, Vincent Courdavault, Nathalie GiglioliguivarchAbstract:Grape Canes are byproducts of viticulture containing valuable bioactive stilbenoids including monomers and oligomers of E-resveratrol. Although effective contents in stilbenoids are known to be highly variable, the determining factors influencing this composition remain poorly understood. As stilbenoids are locally induced defense compounds in response to phytopathogens, this study assessed the impact of downy mildew infection during the growing season on the stilbenoid composition of winter-harvested grape Canes. The spatial distribution between pith, conducting tissues, and cortex of E-piceatannol, E-resveratrol, E-e-viniferin, ampelopsin A, E-miyabenol C, Z/E-vitisin B, hopeaphenol, and isohopeaphenol in grape Canes from infected vineyards was strongly altered. In conducting tissues, representing the main site of stilbenoid accumulation, E-e-viniferin content was higher and E-resveratrol content was lower. These findings suppose that the health status in vineyards could modify the composition of stilbenoids in winter-harvested grape Canes and subsequently the potential biological properties of the valuable extracts.
Audrey Oudin - One of the best experts on this subject based on the ideXlab platform.
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mechanical stress rapidly induces e resveratrol and e piceatannol biosynthesis in grape Canes stored as a freshly pruned byproduct
Food Chemistry, 2018Co-Authors: Kevin Billet, Benjamin Houillé, Sébastien Besseau, Audrey Oudin, Nicolas Papon, Marc Clastre, Vincent Courdavault, Céline Melin, Nathalie Giglioliguivarch, Arnaud LanoueAbstract:Grape Canes represent a promising source of bioactive phytochemicals. However the stabilization of the raw material after pruning remains challenging. We recently reported the induction of stilbenoid metabolism after winter pruning including a strong accumulation of E-resveratrol and E-piceatannol during the first six weeks of storage. In the present study, the effect of mechanical wounding on freshly-pruned Canes was tested to increase the induction of stilbenoid metabolism. Cutting the grape Canes in short segments immediately after pruning triggered a transient expression of phenylalanine ammonia-lyase (PAL) and stilbene synthase (STS) genes, followed by a rapid accumulation of E-resveratrol and E-piceatannol. The degree of stilbenoid induction was related to the intensity of mechanical wounding. Data suggest that a global defense response is triggered involving jasmonate signaling, PR proteins and stilbenoid metabolism. Mechanical wounding of freshly-pruned Canes drastically shortens the time required to reach maximal stilbenoid accumulation from 6 to 2weeks.
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Mechanical stress rapidly induces E-resveratrol and E-piceatannol biosynthesis in grape Canes stored as a freshly-pruned byproduct
Food Chemistry, 2018Co-Authors: Kevin Billet, Benjamin Houillé, Sébastien Besseau, Audrey Oudin, Nicolas Papon, Marc Clastre, Vincent Courdavault, Céline Melin, Nathalie Giglioli-guivarc'h, Arnaud LanoueAbstract:Grape Canes represent a promising source of bioactive phytochemicals. However the stabilization of the raw material after pruning remains challenging. We recently reported the induction of stilbenoid metabolism after winter pruning including a strong accumulation of E-resveratrol and E-piceatannol during the first six weeks of storage. In the present study, the effect of mechanical wounding on freshly-pruned Canes was tested to increase the induction of stilbenoid metabolism. Cutting the grape Canes in short segments immediately after pruning triggered a transient expression of phenylalanine ammonia-lyase (PAL) and stilbene synthase (STS) genes, followed by a rapid accumulation of E-resveratrol and E-piceatannol. The degree of stilbenoid induction was related to the intensity of mechanical wounding. Data suggest that a global defense response is triggered involving jasmonate signaling, PR proteins and stilbenoid metabolism. Mechanica
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Composition and Tissue-Specific Distribution of Stilbenoids in Grape Canes Are Affected by Downy Mildew Pressure in the Vineyard.
Journal of agricultural and food chemistry, 2015Co-Authors: Benjamin Houillé, Sébastien Besseau, Guillaume Delanoue, Audrey Oudin, Nicolas Papon, Marc Clastre, Andrew J. Simkin, Laurence Guérin, Vincent Courdavault, Nathalie Giglioli-guivarc’hAbstract:Grape Canes are byproducts of viticulture containing valuable bioactive stilbenoids including monomers and oligomers of E-resveratrol. Although effective contents in stilbenoids are known to be highly variable, the determining factors influencing this composition remain poorly understood. As stilbenoids are locally induced defense compounds in response to phytopathogens, this study assessed the impact of downy mildew infection during the growing season on the stilbenoid composition of winter-harvested grape Canes. The spatial distribution between pith, conducting tissues, and cortex of E-piceatannol, E-resveratrol, E-ε-viniferin, ampelopsin A, E-miyabenol C, Z/E-vitisin B, hopeaphenol, and isohopeaphenol in grape Canes from infected vineyards was strongly altered. In conducting tissues, representing the main site of stilbenoid accumulation, E-ε-viniferin content was higher and E-resveratrol content was lower. These findings suppose that the health status in vineyards could modify the composition of stilbenoids in winter-harvested grape Canes and subsequently the potential biological properties of the valuable extracts.
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composition and tissue specific distribution of stilbenoids in grape Canes are affected by downy mildew pressure in the vineyard
Journal of Agricultural and Food Chemistry, 2015Co-Authors: Benjamin Houillé, Sébastien Besseau, Guillaume Delanoue, Audrey Oudin, Nicolas Papon, Marc Clastre, Andrew J. Simkin, Laurence Guérin, Vincent Courdavault, Nathalie GiglioliguivarchAbstract:Grape Canes are byproducts of viticulture containing valuable bioactive stilbenoids including monomers and oligomers of E-resveratrol. Although effective contents in stilbenoids are known to be highly variable, the determining factors influencing this composition remain poorly understood. As stilbenoids are locally induced defense compounds in response to phytopathogens, this study assessed the impact of downy mildew infection during the growing season on the stilbenoid composition of winter-harvested grape Canes. The spatial distribution between pith, conducting tissues, and cortex of E-piceatannol, E-resveratrol, E-e-viniferin, ampelopsin A, E-miyabenol C, Z/E-vitisin B, hopeaphenol, and isohopeaphenol in grape Canes from infected vineyards was strongly altered. In conducting tissues, representing the main site of stilbenoid accumulation, E-e-viniferin content was higher and E-resveratrol content was lower. These findings suppose that the health status in vineyards could modify the composition of stilbenoids in winter-harvested grape Canes and subsequently the potential biological properties of the valuable extracts.
