Abstract
BACKGROUND: The aim of this study, performed on Sauvignon blanc clones SB11 and SB316, grafted on the same rootstock 101-14 Mgt (Vitis riparia × V. ruperstris) and grown at two adjacent vineyards, was two-fold: (1) to study wine chemical and sensory composition of both clones within an unaltered canopy; and (2) to determine the effect of defoliation (e.g. bunch microclimate) on wine chemical and sensory composition. RESULTS: Orthogonal projection to latent structures discriminate analysis (OPLS-DA) was applied to the concentration profiles of volatile compounds derived from gas chromatography-mass spectrometry data. The loadings directions inferred that 3-isobutyl-2-methoxypyrazine (IBMP) discriminated control treatments (shaded fruit zone) of both clones from defoliation treatments (exposed fruit zone), whereas 3-sulfanyl-hexan-1-ol (3SH), 3-sulfanylhexyl acetate (3SHA), hexanol, hexyl hexanoate and some other esters discriminated defoliated treatments from the controls. The OPLS-DA indicated the importance of IBMP, higher alcohol acetates and phenylethyl esters, for discrimination of clone SB11 from clone SB316 irrespective of the treatment. Defoliation in the fruit zone significantly decreased perceived greenness in clone SB11 and elevated fruitier aromas, whereas in clone SB316 the effect of defoliation on wine sensory perception was less noticeable regardless the decrease in IBMP concentrations. CONCLUSION: These findings highlight the importance of clone selection and bunch microclimate to diversify produced wine styles.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
IBMP distinguished shaded controls from defoliated fruit zones in both clones.
- Taxon
- Vitis vinifera L.
Vitis viniferat0 - Treatment
- defoliation treatments (exposed fruit zone)e0
- Outcome
- discriminated control treatmentse0
- Qualifier
- 3-isobutyl-2-methoxypyrazine (IBMP)e0
- Comparator
- control treatments (shaded fruit zone)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“3-isobutyl-2-methoxypyrazine (IBMP) discriminated control treatments (shaded fruit zone) of both clones from defoliation treatments (exposed fruit zone)”
t0“Sauvignon blanc (Vitis vinifera L.)”
Claim · model-written summary
3SH, 3SHA, hexanol, hexyl hexanoate and esters distinguished defoliated wines from controls.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Outcome
- discriminated defoliated treatmentse0
- Qualifier
- 3-sulfanyl-hexan-1-ol (3SH), 3-sulfanylhexyl acetate (3SHA), hexanol, hexyl hexanoate and some other esterse0
- Comparator
- the controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“3-sulfanyl-hexan-1-ol (3SH), 3-sulfanylhexyl acetate (3SHA), hexanol, hexyl hexanoate and some other esters discriminated defoliated treatments from the controls.”
t0“Sauvignon blanc (Vitis vinifera L.)”
Claim · model-written summary
IBMP, higher alcohol acetates and phenylethyl esters distinguished clone SB11 from SB316 across treatments.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- clone SB11e0
- Outcome
- discrimination of clone SB11 from clone SB316e0
- Qualifier
- IBMP, higher alcohol acetates and phenylethyl esterse0
- Comparator
- clone SB316e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the importance of IBMP, higher alcohol acetates and phenylethyl esters, for discrimination of clone SB11 from clone SB316 irrespective of the treatment.”
t0“Sauvignon blanc (Vitis vinifera L.)”
Claim · model-written summary
Defoliation significantly reduced perceived greenness in clone SB11.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- clone SB11e0
- Treatment
- Defoliation in the fruit zonee0
- Outcome
- perceived greennesse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation in the fruit zone significantly decreased perceived greenness in clone SB11”
t0“Sauvignon blanc (Vitis vinifera L.)”
Claim · model-written summary
Defoliation raised fruitier aromas in clone SB11.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- clone SB11e0
- Treatment
- Defoliation in the fruit zonee0
- Outcome
- fruitier aromase0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation in the fruit zone significantly decreased perceived greenness in clone SB11 and elevated fruitier aromas”
t0“Sauvignon blanc (Vitis vinifera L.)”
Claim · model-written summary
Defoliation had less noticeable sensory effects in clone SB316.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- clone SB316e0
- Treatment
- defoliatione0
- Outcome
- wine sensory perceptione0
- Direction
- less noticeablee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in clone SB316 the effect of defoliation on wine sensory perception was less noticeable”
t0“Sauvignon blanc (Vitis vinifera L.)”
Claim · model-written summary
IBMP concentration decreased in clone SB316 with defoliation.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- clone SB316e0
- Treatment
- defoliatione0
- Outcome
- IBMP concentrationse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in clone SB316 the effect of defoliation on wine sensory perception was less noticeable regardless the decrease in IBMP concentrations.”
t0“Sauvignon blanc (Vitis vinifera L.)”
Claim · model-written summary
The findings support clone selection and bunch microclimate as ways to diversify wine styles.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Outcome
- clone selection and bunch microclimate to diversify produced wine stylese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the importance of clone selection and bunch microclimate to diversify produced wine styles.”
t0“Sauvignon blanc (Vitis vinifera L.)”
The same questions in other papers
pruning · molecular: metabolites · Vitis vinifera (wine grape)Results differ
36 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- negative
48 papers more in this group
See all 52 papers →pruning · physiology: pigments · Vitis vinifera (wine grape)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.