Abstract
Use of proper rootstocks has the potential to improve copper (Cu) tolerance of grape. To evaluate the rootstock ability to reduce Cu transfer in the aerial portion of a grapevine, a glasshouse experiment was conducted to determine the physiological impact of Cu soil application in ‘Asgari’ seedless grape, either non-grafted or grafted onto different rootstocks. Vines were supplied with a nutrient solution at four levels of CuSO4 concentrations (0, 10, 25 and 50 µM). Cu toxicity symptoms in leaves and reduced plant growth rate were evident in the non-grafted ‘Asgari’ and less pronounced in grapevines grafted onto ‘Shahani’ rootstock. Moreover, ‘Asgari’ grafted onto ‘Shahani’ rootstock had lower rate of Cu accumulation in the leaves when compared to the roots than those of non-grafted and ‘Asgari’ with ‘Keshmeshi’ rootstock. Although significant reduction of P in non-grafted ‘Asgari’ leaf tissue was found under Cu toxicity, ‘Shahani’ rootstock reported the highest amount of P (5.94 mg g−1) in the leaves of ‘Asgari’ scion. However, significant fluctuations in terms of Ca and Fe were reported in leaves of both grafted and non-grafted ‘Asgari’. When exposed to Cu toxicity, ‘Shahani’ rootstock induced significant increase in chlorophyll content, Fv/Fm ratio and a noticeable reduction in electrolyte leakage, H2O2 and malondialdehyde (MDA) compared to those having ‘Keshmeshi’ rootstock and non-grafted ‘Asgari’. ‘Shahani’ rootstock improved ‘Asgari’ performance under Cu toxicity by slowly reducing the activity of antioxidant enzymes, preventing Cu accumulation in the aerial parts and maintaining a balanced scion nutritional status.
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Claims 8
Claim · model-written summary
Copper toxicity symptoms and reduced growth were less pronounced with Shahani rootstock than in non-grafted Asgari.
- Material
- ‘Asgari’e0
- Treatment
- ‘Shahani’ rootstocke0
- Outcome
- Cu toxicity symptoms in leavese0
- Direction
- less pronouncede0
- Comparator
- non-grafted ‘Asgari’e0
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cu toxicity symptoms in leaves and reduced plant growth rate were evident in the non-grafted ‘Asgari’ and less pronounced in grapevines grafted onto ‘Shahani’ rootstock”
t0“Grapevine”
Claim · model-written summary
Shahani grafting reduced leaf copper accumulation relative to roots compared with non-grafted and Keshmeshi vines.
- Material
- ‘Asgari’e0
- Treatment
- ‘Shahani’ rootstocke0
- Outcome
- Cu accumulation in the leavese0
- Direction
- lowere0
- Comparator
- non-grafted and ‘Asgari’ with ‘Keshmeshi’ rootstocke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Asgari’ grafted onto ‘Shahani’ rootstock had lower rate of Cu accumulation in the leaves when compared to the roots than those of non-grafted and ‘Asgari’ with ‘Keshmeshi’ rootstock”
t0“Grapevine”
Claim · model-written summary
Copper toxicity significantly reduced phosphorus in non-grafted Asgari leaves.
- Material
- ‘Asgari’e0
- Treatment
- Cu toxicitye0
- Outcome
- P in non-grafted ‘Asgari’ leaf tissuee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant reduction of P in non-grafted ‘Asgari’ leaf tissue was found under Cu toxicity”
t0“Grapevine”
Claim · model-written summary
Shahani rootstock had the highest phosphorus amount in Asgari scion leaves, 5.94 mg g−1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Shahani’ rootstock reported the highest amount of P (5.94 mg g−1) in the leaves of ‘Asgari’ scion”
t0“Grapevine”
Claim · model-written summary
Leaf calcium and iron fluctuated significantly in grafted and non-grafted Asgari.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant fluctuations in terms of Ca and Fe were reported in leaves of both grafted and non-grafted ‘Asgari’”
t0“Grapevine”
Claim · model-written summary
Under copper toxicity, Shahani rootstock increased chlorophyll content and Fv/Fm ratio relative to Keshmeshi and non-grafted Asgari.
- Treatment
- ‘Shahani’ rootstocke0
- Outcome
- chlorophyll content, Fv/Fm ratioe0
- Direction
- increasee0
- Comparator
- ‘Keshmeshi’ rootstock and non-grafted ‘Asgari’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Shahani’ rootstock induced significant increase in chlorophyll content, Fv/Fm ratio and a noticeable reduction in electrolyte leakage, H2O2 and malondialdehyde (MDA) compared to those having ‘Keshmeshi’ rootstock and non-grafted ‘Asgari’”
t0“Grapevine”
Claim · model-written summary
Under copper toxicity, Shahani rootstock reduced electrolyte leakage, H2O2 and MDA relative to Keshmeshi and non-grafted Asgari.
- Treatment
- ‘Shahani’ rootstocke0
- Outcome
- electrolyte leakage, H2O2 and malondialdehyde (MDA)e0
- Direction
- reductione0
- Comparator
- ‘Keshmeshi’ rootstock and non-grafted ‘Asgari’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Shahani’ rootstock induced significant increase in chlorophyll content, Fv/Fm ratio and a noticeable reduction in electrolyte leakage, H2O2 and malondialdehyde (MDA) compared to those having ‘Keshmeshi’ rootstock and non-grafted ‘Asgari’”
t0“Grapevine”
Claim · model-written summary
Shahani rootstock improved Asgari performance under copper toxicity while reducing antioxidant enzyme activity and copper accumulation and maintaining nutrition.
- Treatment
- ‘Shahani’ rootstocke0
- Outcome
- ‘Asgari’ performancee0
- Qualifier
- slowly reducing the activity of antioxidant enzymes, preventing Cu accumulation in the aerial parts and maintaining a balanced scion nutritional statuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Shahani’ rootstock improved ‘Asgari’ performance under Cu toxicity by slowly reducing the activity of antioxidant enzymes, preventing Cu accumulation in the aerial parts and maintaining a balanced scion nutritional status”
t0“Grapevine”
The same questions in other papers
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- no effect
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- positive
- positive
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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.