Abstract
The effect of Ca2+ and calmodulin antagonist W7 on antioxidant systems of tomato(Lycopersicon esculentum M.) seedlings under drought stress induced by 10% polyethylene glycol(PEG-6000) was studied in hydroponics culture.The results showed that pretreated seedlings with calmodulin antagonist W7 under PEG stress had lower SOD and POD activities,and higher production rate of O2·,MDA and H2O2,in addition,aggravated the damage of AsA and GSH;On the contrary,Ca2+ treatment enabled the seedlings to keep relatively high activities of SOD and POD,lower production rate of O2-· and MDA content,at the same time,alleviated the accumulation of AsA and GSH.These results indicated that Ca2+-CaM signal transduction might regulate resistance of tomato seedlings to PEG stress of tomato seedlings by affecting the activity of some antioxidant enzymes and the content of antioxidant substance.The experiment shows that Ca2+-CaM signal system plays an important regulating role in alleviating PEG stress induced by 10% polyethylene glycol(PEG-6000) in seedlings.
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Claims 7
Claim · model-written summary
W7 pretreatment lowered SOD and POD activities of tomato seedlings under PEG stress.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- rootst0
- Treatment
- calmodulin antagonist W7e1
- Outcome
- SOD and POD activitiese1
- Direction
- lowere1
- Qualifier
- PEG stresse1
- Setting
- hydroponics culturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“roots of tomato seedlings”
e0“The effect of Ca2+ and calmodulin antagonist W7 on antioxidant systems of tomato(Lycopersicon esculentum M.) seedlings under drought stress induced by 10% polyethylene glycol(PEG-6000) was studied in hydroponics culture”
e1“pretreated seedlings with calmodulin antagonist W7 under PEG stress had lower SOD and POD activities”
Claim · model-written summary
W7 pretreatment raised production rates of O2·, MDA and H2O2 in tomato seedlings under PEG stress.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- rootst0
- Treatment
- calmodulin antagonist W7e1
- Outcome
- production rate of O2·,MDA and H2O2e2
- Direction
- highere2
- Qualifier
- PEG stresse1
- Setting
- hydroponics culturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“roots of tomato seedlings”
e0“The effect of Ca2+ and calmodulin antagonist W7 on antioxidant systems of tomato(Lycopersicon esculentum M.) seedlings under drought stress induced by 10% polyethylene glycol(PEG-6000) was studied in hydroponics culture”
e1“pretreated seedlings with calmodulin antagonist W7 under PEG stress had lower SOD and POD activities”
e2“and higher production rate of O2·,MDA and H2O2”
Claim · model-written summary
W7 pretreatment aggravated the damage of AsA and GSH in tomato seedlings under PEG stress.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- rootst0
- Treatment
- calmodulin antagonist W7e1
- Outcome
- damage of AsA and GSHe3
- Direction
- aggravatede3
- Qualifier
- PEG stresse1
- Setting
- hydroponics culturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“roots of tomato seedlings”
e0“The effect of Ca2+ and calmodulin antagonist W7 on antioxidant systems of tomato(Lycopersicon esculentum M.) seedlings under drought stress induced by 10% polyethylene glycol(PEG-6000) was studied in hydroponics culture”
e1“pretreated seedlings with calmodulin antagonist W7 under PEG stress had lower SOD and POD activities”
e3“aggravated the damage of AsA and GSH”
Claim · model-written summary
Ca2+ treatment kept relatively high SOD and POD activities in tomato seedlings under PEG stress.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- rootst0
- Treatment
- Ca2+ treatmente4
- Outcome
- activities of SOD and PODe4
- Direction
- keep relatively highe4
- Setting
- hydroponics culturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“roots of tomato seedlings”
e0“The effect of Ca2+ and calmodulin antagonist W7 on antioxidant systems of tomato(Lycopersicon esculentum M.) seedlings under drought stress induced by 10% polyethylene glycol(PEG-6000) was studied in hydroponics culture”
e4“Ca2+ treatment enabled the seedlings to keep relatively high activities of SOD and POD”
Claim · model-written summary
Ca2+ treatment lowered the production rate of O2-· and MDA content in tomato seedlings under PEG stress.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- rootst0
- Treatment
- Ca2+ treatmente4
- Outcome
- production rate of O2-· and MDA contente5
- Direction
- lowere5
- Setting
- hydroponics culturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“roots of tomato seedlings”
e0“The effect of Ca2+ and calmodulin antagonist W7 on antioxidant systems of tomato(Lycopersicon esculentum M.) seedlings under drought stress induced by 10% polyethylene glycol(PEG-6000) was studied in hydroponics culture”
e4“Ca2+ treatment enabled the seedlings to keep relatively high activities of SOD and POD”
e5“lower production rate of O2-· and MDA content”
Claim · model-written summary
Ca2+ treatment alleviated the accumulation of AsA and GSH in tomato seedlings.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- rootst0
- Treatment
- Ca2+ treatmente4
- Outcome
- accumulation of AsA and GSHe6
- Direction
- alleviatede6
- Setting
- hydroponics culturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“roots of tomato seedlings”
e0“The effect of Ca2+ and calmodulin antagonist W7 on antioxidant systems of tomato(Lycopersicon esculentum M.) seedlings under drought stress induced by 10% polyethylene glycol(PEG-6000) was studied in hydroponics culture”
e4“Ca2+ treatment enabled the seedlings to keep relatively high activities of SOD and POD”
e6“alleviated the accumulation of AsA and GSH”
Claim · model-written summary
Ca2+-CaM signal transduction may regulate resistance of tomato seedlings to PEG stress by affecting antioxidant enzymes and antioxidant substances.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- resistance of tomato seedlings to PEG stresse7
- Qualifier
- by affecting the activity of some antioxidant enzymes and the content of antioxidant substancee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of Ca2+ and calmodulin antagonist W7 on antioxidant systems of tomato(Lycopersicon esculentum M.) seedlings under drought stress induced by 10% polyethylene glycol(PEG-6000) was studied in hydroponics culture”
e7“Ca2+-CaM signal transduction might regulate resistance of tomato seedlings to PEG stress of tomato seedlings by affecting the activity of some antioxidant enzymes and the content of antioxidant substance”
The same questions in other papers
calcium(2+) · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
7 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
6 papers more in this group
See all 10 papers →calcium(2+) · physiology: oxidative · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- positive
- positive
calcium(2+) · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.