Abstract
Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season. Light environment of the fruit clusters was not affected by defoliation. Seven days following defoliation, half of the vines were destructively harvested for carbohydrate analysis, while the remaining vines were kept for fruit analysis at maturity. Defoliation of vines at berry set and veraison significantly reduced TNSC concentration in the leaf tissue. Partial defoliation of vines at berry set reduced total flavonols by 24%, total anthocyanins by 33%, and total phenolics by 13% in the fruit compared to the control vines. At veraison, partial defoliation of vines reduced total flavonols by 8%, anthocyanins by 43%, and did not affect total phenolics. While flavonol and total phenolic content was not affected by defoliation 7 days prior to harvest, total anthocyanins were increased by 39%, although leaf TNSC concentration was not affected. Concentration of total flavonols and anthocyanins were positively correlated with TNSC in the leaves ( r = 0.53 and r = 0.73, respectively) while total phenolic content was not correlated with TNSC. These results indicate that development of anthocyanins and flavonols in fruit is linked to carbohydrate availability from vegetative tissues during berry set and veraison.
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Claims 13
Claim · model-written summary
Defoliation at berry set and veraison significantly reduced leaf TNSC.
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation of vines at berry set and veraison significantly reduced TNSC concentration in the leaf tissue.”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Defoliation at berry set reduced berry flavonols by 24%.
- Treatment
- Partial defoliation of vines at berry sete0
- Outcome
- total flavonolse0
- Direction
- reducede0
- Value
- 24%e0
- Comparator
- control vinese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Partial defoliation of vines at berry set reduced total flavonols by 24%, total anthocyanins by 33%, and total phenolics by 13% in the fruit compared to the control vines.”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Defoliation at berry set reduced berry anthocyanins by 33%.
- Treatment
- Partial defoliation of vines at berry sete0
- Outcome
- total anthocyaninse0
- Direction
- reducede0
- Value
- 33%e0
- Comparator
- control vinese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Partial defoliation of vines at berry set reduced total flavonols by 24%, total anthocyanins by 33%, and total phenolics by 13% in the fruit compared to the control vines.”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Defoliation at berry set reduced berry total phenolics by 13%.
- Treatment
- Partial defoliation of vines at berry sete0
- Outcome
- total phenolicse0
- Direction
- reducede0
- Value
- 13%e0
- Comparator
- control vinese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Partial defoliation of vines at berry set reduced total flavonols by 24%, total anthocyanins by 33%, and total phenolics by 13% in the fruit compared to the control vines.”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Defoliation at veraison reduced berry flavonols by 8%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At veraison, partial defoliation of vines reduced total flavonols by 8%, anthocyanins by 43%, and did not affect total phenolics.”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Defoliation at veraison reduced berry anthocyanins by 43%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At veraison, partial defoliation of vines reduced total flavonols by 8%, anthocyanins by 43%, and did not affect total phenolics.”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Defoliation at veraison did not affect total phenolics.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At veraison, partial defoliation of vines reduced total flavonols by 8%, anthocyanins by 43%, and did not affect total phenolics.”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Defoliation seven days before harvest did not affect flavonol and total phenolic content.
- Treatment
- defoliation 7 days prior to harveste0
- Outcome
- flavonol and total phenolic contente0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flavonol and total phenolic content was not affected by defoliation 7 days prior to harvest”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Defoliation before harvest increased berry anthocyanins by 39%.
- Treatment
- defoliation 7 days prior to harveste2
- Outcome
- total anthocyaninse0
- Direction
- increasede0
- Value
- 39%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total anthocyanins were increased by 39%”
e2“flavonol and total phenolic content was not affected by defoliation 7 days prior to harvest”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Before-harvest defoliation did not affect leaf TNSC.
- Treatment
- defoliation 7 days prior to harveste2
- Outcome
- leaf TNSC concentratione0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf TNSC concentration was not affected”
e2“flavonol and total phenolic content was not affected by defoliation 7 days prior to harvest”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Leaf TNSC was positively correlated with total flavonols at r = 0.53.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentration of total flavonols and anthocyanins were positively correlated with TNSC in the leaves ( r = 0.53 and r = 0.73, respectively)”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Leaf TNSC was positively correlated with anthocyanins at r = 0.73.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentration of total flavonols and anthocyanins were positively correlated with TNSC in the leaves ( r = 0.53 and r = 0.73, respectively)”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
Claim · model-written summary
Total phenolics were not correlated with TNSC.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total phenolic content was not correlated with TNSC”
e1“Carbon supply reduction was used to investigate the relationship between total non-structural carbohydrate (TNSC) concentration in the vegetative tissue and the production of phenolic compounds in the fruit of grapevines. Potted, greenhouse-grown DeChaunac vines were partially defoliated on one of three dates (berry set, veraison, or 7 days pre-harvest) during the growing season.”
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See all 38 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.