Abstract
In order to investigate the unique contribution of individual wine grape (Vitis vinifera) berry tissues and water-deficit to wine quality traits, a survey of tissue-specific differences in protein and selected metabolites was conducted using pericarp (skin and pulp) and seeds of berries from vines grown under well-watered and water-deficit stress conditions. Of 1047 proteins surveyed from pericarp by 2-D PAGE, 90 identified proteins showed differential expression between the skin and pulp. Of 695 proteins surveyed from seed tissue, 163 were identified and revealed that the seed and pericarp proteomes were nearly completely distinct from one another. Water-deficit stress altered the abundance of approximately 7% of pericarp proteins, but had little effect on seed protein expression. Comparison of protein and available mRNA expression patterns showed that 32% pericarp and 69% seed proteins exhibited similar quantitative expression patterns indicating that protein accumulation patterns are strongly influenced by post-transcriptional processes. About half of the 32 metabolites surveyed showed tissue-specific differences in abundance with water-deficit stress affecting the accumulation of seven of these compounds. These results provide novel insights into the likely tissue-specific origins and the influence of water-deficit stress on the accumulation of key flavor and aroma compounds in wine.
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Claims 8
Claim · model-written summary
Ninety pericarp proteins differed in expression between skin and pulp.
- Taxon
- wine grape (Vitis vinifera)
Vitis viniferae1 - Outcome
- proteins showed differential expression between the skin and pulpe0
- Value
- 90 identified proteinse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Of 1047 proteins surveyed from pericarp by 2-D PAGE, 90 identified proteins showed differential expression between the skin and pulp.”
e1“wine grape (Vitis vinifera)”
Claim · model-written summary
Seed and pericarp proteomes were nearly completely distinct.
- Taxon
- wine grape (Vitis vinifera)Vitis viniferae1
- Outcome
- seed and pericarp proteomes were nearly completely distincte0
- Value
- 163e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Of 695 proteins surveyed from seed tissue, 163 were identified and revealed that the seed and pericarp proteomes were nearly completely distinct from one another.”
e1“wine grape (Vitis vinifera)”
Claim · model-written summary
Water deficit altered abundance of about 7% of pericarp proteins.
- Taxon
- wine grape (Vitis vinifera)Vitis viniferae1
- Treatment
- Water-deficit stresse0
- Outcome
- abundance of approximately 7% of pericarp proteinse0
- Direction
- alterede0
- Value
- approximately 7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress altered the abundance of approximately 7% of pericarp proteins”
e1“wine grape (Vitis vinifera)”
Claim · model-written summary
Water deficit had little effect on seed protein expression.
- Taxon
- wine grape (Vitis vinifera)Vitis viniferae1
- Treatment
- Water-deficit stresse0
- Outcome
- seed protein expressione0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress altered the abundance of approximately 7% of pericarp proteins, but had little effect on seed protein expression.”
e1“wine grape (Vitis vinifera)”
Claim · model-written summary
Pericarp protein and mRNA expression patterns matched quantitatively for 32% of proteins.
- Taxon
- wine grape (Vitis vinifera)Vitis viniferae1
- Outcome
- similar quantitative expression patternse0
- Value
- 32%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“32% pericarp and 69% seed proteins exhibited similar quantitative expression patterns”
e1“wine grape (Vitis vinifera)”
Claim · model-written summary
Seed protein and mRNA expression patterns matched quantitatively for 69% of proteins.
- Taxon
- wine grape (Vitis vinifera)Vitis viniferae1
- Outcome
- similar quantitative expression patternse0
- Value
- 69%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“32% pericarp and 69% seed proteins exhibited similar quantitative expression patterns”
e1“wine grape (Vitis vinifera)”
Claim · model-written summary
About half of surveyed metabolites showed tissue-specific abundance differences.
- Taxon
- wine grape (Vitis vinifera)Vitis viniferae1
- Outcome
- tissue-specific differences in abundancee0
- Value
- About half of the 32 metabolitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“About half of the 32 metabolites surveyed showed tissue-specific differences in abundance”
e1“wine grape (Vitis vinifera)”
Claim · model-written summary
Water deficit affected accumulation of seven surveyed metabolites.
- Taxon
- wine grape (Vitis vinifera)Vitis viniferae1
- Treatment
- water-deficit stresse0
- Outcome
- accumulation of seven of these compoundse0
- Value
- sevene0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water-deficit stress affecting the accumulation of seven of these compounds”
e1“wine grape (Vitis vinifera)”
The same questions in other papers
drought · molecular: expression · Vitis vinifera (wine grape)Positive and negative results
2 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
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See all 7 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.