Abstract
Plants are frequently exposed to different combinations of soil constraints including salinity and different herbicides. These abiotic conditions negatively affect photosynthesis, growth and plant development resulting in limitations in agriculture production. To respond to these conditions, plants accumulate different metabolites that restore cellular homeostasis and are key for stress acclimation processes. In this work, we analyzed the role of exogenous spermine (Spm), a polyamine involved in plant tolerance to abiotic stress, in tomato responses to the combination of salinity (S) and the herbicide paraquat (PQ). Our findings showed that application of Spm reduced leaf damage and enhanced survival, growth, photosystem II function and photosynthetic rate of tomato plants subjected to the combination of S and PQ. In addition, we revealed that exogenous Spm reduced H 2 O 2 and malondialdehyde (MDA) accumulation in plants subjected to S+PQ, suggesting that the role of exogenous Spm in alleviating the negative effects of this stress combination could be attributed to a decrease in stress-induced oxidative damage in tomato plants. Taken together, our results identify a key role for Spm in improving plant tolerance to combined stress.
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Claims 6
Claim · model-written summary
Spermine reduced leaf damage under combined salinity and paraquat.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- application of Spme0
- Outcome
- leaf damagee0
- Direction
- reducede0
- Qualifier
- combination of S and PQe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Spm reduced leaf damage and enhanced survival, growth, photosystem II function and photosynthetic rate of tomato plants subjected to the combination of S and PQ”
Claim · model-written summary
Spermine enhanced tomato survival and growth under combined stress.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- application of Spme0
- Outcome
- survival, growthe0
- Direction
- enhancede0
- Qualifier
- combination of S and PQe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Spm reduced leaf damage and enhanced survival, growth, photosystem II function and photosynthetic rate of tomato plants subjected to the combination of S and PQ”
Claim · model-written summary
Spermine enhanced photosystem II function and photosynthetic rate under combined stress.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- application of Spme0
- Outcome
- photosystem II function and photosynthetic ratee0
- Direction
- enhancede0
- Qualifier
- combination of S and PQe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Spm reduced leaf damage and enhanced survival, growth, photosystem II function and photosynthetic rate of tomato plants subjected to the combination of S and PQ”
Claim · model-written summary
Spermine reduced hydrogen peroxide accumulation under combined stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- exogenous Spme0
- Outcome
- H 2 O 2e0
- Direction
- reducede0
- Qualifier
- S+PQe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous Spm reduced H 2 O 2 and malondialdehyde (MDA) accumulation in plants subjected to S+PQ”
t0“tomato”
Claim · model-written summary
Spermine reduced malondialdehyde accumulation under combined stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- exogenous Spme0
- Outcome
- malondialdehyde (MDA) accumulatione0
- Direction
- reducede0
- Qualifier
- S+PQe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous Spm reduced H 2 O 2 and malondialdehyde (MDA) accumulation in plants subjected to S+PQ”
t0“tomato”
Claim · model-written summary
The authors attribute spermine stress alleviation to reduced oxidative damage.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- exogenous Spme0
- Outcome
- alleviating the negative effects of this stress combinatione0
- Qualifier
- decrease in stress-induced oxidative damagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the role of exogenous Spm in alleviating the negative effects of this stress combination could be attributed to a decrease in stress-induced oxidative damage in tomato plants”
The same questions in other papers
spermine · growth · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
spermine · physiology: photosynthesis · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
spermine · physiology: oxidative · 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.