Abstract
The impact of water deficit on stilbene biosynthesis in wine grape (Vitis vinifera) berries was investigated. Water deficit increased the accumulation of trans-piceid (the glycosylated form of resveratrol) by 5-fold in Cabernet Sauvignon berries but not in Chardonnay. Similarly, water deficit significantly increased the transcript abundance of genes involved in the biosynthesis of stilbene precursors in Cabernet Sauvignon. Increased expression of stilbene synthase, but not that of resveratrol-O-glycosyltransferase, resulted in increased trans-piceid concentrations. In contrast, the transcript abundance of the same genes declined in Chardonnay in response to water deficit. Twelve single nucleotide polymorphisms (SNPs) were identified in the promoters of stilbene synthase genes of Cabernet Sauvignon, Chardonnay, and Pinot Noir. These polymorphisms resulted in eight changes within the predicted cis regulatory elements in Cabernet Sauvignon and Chardonnay. These results suggest that cultivar-specific molecular mechanisms might exist that control resveratrol biosynthesis in grapes.
Abstract from the paper’s OpenAlex record; open copy licensed other-oa. 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 9
Claim · model-written summary
Water deficit increased Cabernet Sauvignon berry trans-piceid accumulation fivefold.
- Taxon
- Vitis vinifera
Vitis viniferae1 - Material
- Cabernet Sauvignone0
- Treatment
- Water deficite0
- Outcome
- accumulation of trans-piceide0
- Direction
- increasede0
- Value
- 5-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit increased the accumulation of trans-piceid (the glycosylated form of resveratrol) by 5-fold in Cabernet Sauvignon berries but not in Chardonnay.”
e1“wine grape (Vitis vinifera) berries”
Claim · model-written summary
Water deficit did not increase trans-piceid accumulation in Chardonnay.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Chardonnaye0
- Treatment
- Water deficite0
- Outcome
- accumulation of trans-piceide0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit increased the accumulation of trans-piceid (the glycosylated form of resveratrol) by 5-fold in Cabernet Sauvignon berries but not in Chardonnay.”
e1“wine grape (Vitis vinifera) berries”
Claim · model-written summary
Water deficit significantly increased transcripts for stilbene precursor biosynthesis genes in Cabernet Sauvignon.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Cabernet Sauvignone0
- Treatment
- water deficite0
- Outcome
- transcript abundance of genes involved in the biosynthesis of stilbene precursorse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water deficit significantly increased the transcript abundance of genes involved in the biosynthesis of stilbene precursors in Cabernet Sauvignon.”
e1“wine grape (Vitis vinifera) berries”
Claim · model-written summary
Increased stilbene synthase expression resulted in greater trans-piceid concentrations.
- Taxon
- Vitis viniferaVitis viniferae1
- Gene
- stilbene synthasee0
- Outcome
- trans-piceid concentrationse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased expression of stilbene synthase, but not that of resveratrol-O-glycosyltransferase, resulted in increased trans-piceid concentrations.”
e1“wine grape (Vitis vinifera) berries”
Claim · model-written summary
Resveratrol-O-glycosyltransferase expression did not account for increased trans-piceid concentrations.
- Taxon
- Vitis viniferaVitis viniferae1
- Gene
- resveratrol-O-glycosyltransferasee0
- Outcome
- trans-piceid concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased expression of stilbene synthase, but not that of resveratrol-O-glycosyltransferase, resulted in increased trans-piceid concentrations.”
e1“wine grape (Vitis vinifera) berries”
Claim · model-written summary
The same gene transcripts declined in Chardonnay under water deficit.
- Taxon
- Vitis viniferaVitis viniferae1
- Material
- Chardonnaye0
- Treatment
- water deficite0
- Outcome
- transcript abundance of the same genese0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transcript abundance of the same genes declined in Chardonnay in response to water deficit.”
e1“wine grape (Vitis vinifera) berries”
Claim · model-written summary
Twelve SNPs were identified in stilbene synthase gene promoters across three cultivars.
- Taxon
- Vitis viniferaVitis viniferae1
- Gene
- stilbene synthase genese0
- Outcome
- single nucleotide polymorphisms (SNPs)e0
- Value
- Twelvee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twelve single nucleotide polymorphisms (SNPs) were identified in the promoters of stilbene synthase genes of Cabernet Sauvignon, Chardonnay, and Pinot Noir.”
e1“wine grape (Vitis vinifera) berries”
Claim · model-written summary
These polymorphisms changed eight predicted cis regulatory elements in Cabernet Sauvignon and Chardonnay.
- Taxon
- Vitis viniferaVitis viniferae1
- Outcome
- changes within the predicted cis regulatory elementse0
- Value
- eight changese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These polymorphisms resulted in eight changes within the predicted cis regulatory elements in Cabernet Sauvignon and Chardonnay.”
e1“wine grape (Vitis vinifera) berries”
Claim · model-written summary
The authors suggest cultivar-specific mechanisms control resveratrol biosynthesis.
Verbatim
e0“cultivar-specific molecular mechanisms might exist that control resveratrol biosynthesis in grapes.”
The same questions in other papers
drought · molecular: expression · Vitis vinifera (wine grape)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
3 papers more in this group
See all 7 papers →drought · molecular: metabolites · Vitis vinifera (wine grape)Positive and negative results
12 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- negative
- no effect
15 papers more in this group
See all 19 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.