Abstract
Salinity is a major environmental stress that restricts plants growth and production. Grapes are classified as moderately sensitive to salinity. The aim of this work was to investigate the salinity effects on lipid peroxidation level, antioxidant compounds and anti-oxidative enzymes activities and photosynthetic pigment contents in four grape genotypes that are commonly grown in the region around Urmia salt lake. Malondialdehyde content and protective enzymes activities in roots and leaves of four genotypes increased significantly (P < 0.05) under salinity. 'Chawga' showed lower and higher increases in malondialdehyde content and enzymes activities, respectively. Salinity had an obvious effect on the accumulation of total phenolics content and induced phenylalanine ammonia-lyase enzyme activity in all genotypes. There were significant positive correlations (P < 0.01, r2= 0.838) between anti-oxidative enzyme activities, total phenolics content and phenylalanine ammonia-lyase activity in the leaves of all genotypes. Chlorophyll a, b contents in leaves of all genotypes were reduced and carotenoid content increased significantly (P < 0.05) under salinity. 'Chawga' showed a lower decrease in chlorophyll content and a higher increase in carotenoid content than others. It seems that 'Chawga' had a better antioxidant system compared to other genotypes and showed a higher capacity to tolerate salinity.
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Claims 13
Claim · model-written summary
Salinity significantly increased malondialdehyde content in grape roots and leaves.
- Taxon
- grapet0
- Organ / stage
- roots and leavese0
- Treatment
- salinitye0
- Outcome
- Malondialdehyde contente0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Malondialdehyde content and protective enzymes activities in roots and leaves of four genotypes increased significantly (P < 0.05) under salinity.”
t0“grape”
Claim · model-written summary
Salinity significantly increased protective enzyme activities in roots and leaves of four grape genotypes.
- Taxon
- grapet0
- Organ / stage
- roots and leavese0
- Treatment
- salinitye0
- Outcome
- protective enzymes activitiese0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Malondialdehyde content and protective enzymes activities in roots and leaves of four genotypes increased significantly (P < 0.05) under salinity.”
t0“grape”
Claim · model-written summary
'Chawga' showed a smaller salinity-related increase in malondialdehyde than other genotypes.
Not reportedComparator
Verbatim
e0“'Chawga' showed lower and higher increases in malondialdehyde content and enzymes activities, respectively.”
t0“grape”
Claim · model-written summary
'Chawga' showed a larger salinity-related increase in enzyme activity than other genotypes.
Not reportedComparator
Verbatim
e0“'Chawga' showed lower and higher increases in malondialdehyde content and enzymes activities, respectively.”
t0“grape”
Claim · model-written summary
Salinity increased total phenolics content in all grape genotypes.
- Taxon
- grapet0
- Treatment
- Salinitye0
- Outcome
- accumulation of total phenolics contente0
- Direction
- increaseinferrede0
Not reportedComparator
Verbatim
e0“Salinity had an obvious effect on the accumulation of total phenolics content and induced phenylalanine ammonia-lyase enzyme activity in all genotypes.”
t0“grape”
Claim · model-written summary
Salinity induced phenylalanine ammonia-lyase enzyme activity in all grape genotypes.
- Taxon
- grapet0
- Treatment
- Salinitye0
- Gene
- phenylalanine ammonia-lyasee0
- Outcome
- phenylalanine ammonia-lyase enzyme activitye0
- Direction
- inducede0
Not reportedComparator
Verbatim
e0“Salinity had an obvious effect on the accumulation of total phenolics content and induced phenylalanine ammonia-lyase enzyme activity in all genotypes.”
t0“grape”
Claim · model-written summary
Leaf antioxidant enzyme activities, total phenolics content and phenylalanine ammonia-lyase activity had significant positive correlations across genotypes.
Verbatim
e0“There were significant positive correlations (P < 0.01, r2= 0.838) between anti-oxidative enzyme activities, total phenolics content and phenylalanine ammonia-lyase activity in the leaves of all genotypes.”
t0“grape”
Claim · model-written summary
Salinity reduced leaf chlorophyll a and b contents in all grape genotypes.
- Taxon
- grapet0
- Organ / stage
- leavese0
- Treatment
- salinitye0
- Outcome
- Chlorophyll a, b contentse0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Chlorophyll a, b contents in leaves of all genotypes were reduced and carotenoid content increased significantly (P < 0.05) under salinity.”
t0“grape”
Claim · model-written summary
Salinity significantly increased leaf carotenoid content in all grape genotypes.
Not reportedComparator
Verbatim
e0“Chlorophyll a, b contents in leaves of all genotypes were reduced and carotenoid content increased significantly (P < 0.05) under salinity.”
t0“grape”
Claim · model-written summary
'Chawga' showed less chlorophyll reduction than other genotypes.
Verbatim
e0“'Chawga' showed a lower decrease in chlorophyll content and a higher increase in carotenoid content than others.”
t0“grape”
Claim · model-written summary
'Chawga' showed a larger carotenoid increase than other genotypes.
Verbatim
e0“'Chawga' showed a lower decrease in chlorophyll content and a higher increase in carotenoid content than others.”
t0“grape”
Claim · model-written summary
The authors infer that 'Chawga' had a better antioxidant system than other genotypes.
Verbatim
e0“It seems that 'Chawga' had a better antioxidant system compared to other genotypes and showed a higher capacity to tolerate salinity.”
t0“grape”
Claim · model-written summary
The authors infer that 'Chawga' had a higher capacity to tolerate salinity.
Verbatim
e0“It seems that 'Chawga' had a better antioxidant system compared to other genotypes and showed a higher capacity to tolerate salinity.”
t0“grape”
The same questions in other papers
salinity · quality: phytochemicals · VitisResults differ
3 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
2 papers more in this group
See all 6 papers →salinity · physiology: pigments · VitisPositive and negative results
4 in the opposite direction
- negative
- negative
- negative
1 paper more in this group
See all 5 papers →salinity · physiology: oxidative · VitisPositive and negative results
10 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
9 papers more in this group
See all 13 papers →salinity · physiology: enzyme activity · VitisResults agree
1 paper in the same direction as this paper
- positive
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.