Abstract
The paper investigated the effects of exogenous GABA application to salinized nutrient solution on reactive oxygen species(ROS) metabolism and chlorophyll fluorescence parameters in the seedlings of one tomato cultivar 'Jin Peng No.1' under NaCl stress.The results showed that seedlings grown in nutrient solution salinized with NaCl increased O·-2productive rate,MDA content and antioxidant enzyme(SOD,CAT) activities,but the increasing range of antioxidant enzyme activities was lower than ROS productive rate,which lead to decreased capability of photosystem in tomato seedlings.Exogenous GABA application treatments relieved the harm of NaCl stress to seedlings growth,meanwhile O·-2 productive rate and MDA content in leaves and roots with were significantly lower than NaCl treatment.Compared with NaCl treatment,the activities of SOD,POD,CAT and Fv/Fm,ΦPSII,qP were significantly increased,but NPQ was obviously decreased with GABA application.The findings suggested that exogenous GABA application played an important role for enhancing salt tolerance in tomato seedlings.
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Claims 11
Claim · model-written summary
NaCl salinity increased seedling superoxide production.
Not reportedComparator
Verbatim
e0“seedlings grown in nutrient solution salinized with NaCl increased O·-2productive rate,MDA content and antioxidant enzyme(SOD,CAT) activities”
Claim · model-written summary
NaCl salinity increased seedling MDA content.
Not reportedComparator
Verbatim
e0“seedlings grown in nutrient solution salinized with NaCl increased O·-2productive rate,MDA content and antioxidant enzyme(SOD,CAT) activities”
Claim · model-written summary
NaCl salinity increased SOD and CAT activities, but by less than the rise in ROS production.
- Treatment
- NaCle0
- Outcome
- antioxidant enzyme(SOD,CAT) activitiese0
- Direction
- increasede0
- Qualifier
- lower than ROS productive ratee0
Not reportedTaxonComparator
Verbatim
e0“seedlings grown in nutrient solution salinized with NaCl increased O·-2productive rate,MDA content and antioxidant enzyme(SOD,CAT) activities,but the increasing range of antioxidant enzyme activities was lower than ROS productive rate”
Claim · model-written summary
NaCl stress decreased photosystem capability in tomato seedlings.
- Taxon
- tomato seedlings
Solanum lycopersicume0 - Outcome
- capability of photosysteme0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which lead to decreased capability of photosystem in tomato seedlings”
Claim · model-written summary
GABA relieved harm to seedling growth under NaCl stress.
Verbatim
e0“Exogenous GABA application treatments relieved the harm of NaCl stress to seedlings growth”
Claim · model-written summary
GABA significantly lowered superoxide production in leaves and roots relative to NaCl treatment.
- Organ / stage
- leaves and rootse0
- Treatment
- GABA applicatione0
- Outcome
- O·-2 productive ratee0
- Direction
- lowere0
- Comparator
- NaCl treatmente0
Not reportedTaxon
Verbatim
e0“Exogenous GABA application treatments relieved the harm of NaCl stress to seedlings growth,meanwhile O·-2 productive rate and MDA content in leaves and roots with were significantly lower than NaCl treatment”
Claim · model-written summary
GABA significantly lowered MDA content in leaves and roots relative to NaCl treatment.
- Organ / stage
- leaves and rootse0
- Treatment
- GABA applicatione0
- Outcome
- MDA contente0
- Direction
- lowere0
- Comparator
- NaCl treatmente0
Not reportedTaxon
Verbatim
e0“Exogenous GABA application treatments relieved the harm of NaCl stress to seedlings growth,meanwhile O·-2 productive rate and MDA content in leaves and roots with were significantly lower than NaCl treatment”
Claim · model-written summary
GABA significantly increased SOD, POD and CAT activities compared with NaCl treatment.
- Treatment
- GABA applicatione0
- Outcome
- activities of SOD,POD,CATe0
- Direction
- increasede0
- Comparator
- NaCl treatmente0
Not reportedTaxon
Verbatim
e0“Compared with NaCl treatment,the activities of SOD,POD,CAT and Fv/Fm,ΦPSII,qP were significantly increased,but NPQ was obviously decreased with GABA application”
Claim · model-written summary
GABA significantly increased Fv/Fm, ΦPSII and qP compared with NaCl treatment.
Not reportedTaxon
Verbatim
e0“Compared with NaCl treatment,the activities of SOD,POD,CAT and Fv/Fm,ΦPSII,qP were significantly increased,but NPQ was obviously decreased with GABA application”
Claim · model-written summary
GABA decreased NPQ compared with NaCl treatment.
Not reportedTaxon
Verbatim
e0“Compared with NaCl treatment,the activities of SOD,POD,CAT and Fv/Fm,ΦPSII,qP were significantly increased,but NPQ was obviously decreased with GABA application”
Claim · model-written summary
The authors infer that exogenous GABA enhances salt tolerance of tomato seedlings.
- Taxon
- tomato seedlingsSolanum lycopersicume0
- Treatment
- exogenous GABA applicatione0
- Outcome
- salt tolerancee0
- Direction
- enhancinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous GABA application played an important role for enhancing salt tolerance in tomato seedlings”
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