Abstract
The effects of nitrate(NO3-)stress with 0,50,100,150,200mmol·L-1 concentrations were studied on growth and physiological and biochemical indexes of cherry tomato(Lycopersicon esculentum Mill.var.cerasiforme Alef.)variety ‘Dahong cherry tomato'using the hydroponic culture test.The results showed that the plant height,fresh weight,dry weight and relative water content decreased with the increasing of nitrate concentration after treated for 6days,while the root to shoot ratio increased first and then decreased.The contents of TBARS,ROS,H2O2and protein carbonyl(PC)of tomato seedlings increased with the increasing of nitrate concentration.The activities and gene expression of SOD,POD,CAT and APX of tomato seedlings decreased with the increasing of nitrate concentration.The contents of proline,soluble sugar and soluble protein of tomato seedlings increased with the increasing of nitrate concentration.Our experiment indicated that the 50mmol·L-1 NO3-had little effect on the plants,while 100 mmol·L-1 NO3-inhibited the growth of tomato seedlings,caused damage to the membrane lipid and decreased the activities of antioxidant enzymes(SOD,POD,CAT and APX);However,the increased osmotic adjustment substance could adjust themselves to avoid nitrate stress,which led to some tolerant ability of tomato to nitrate stress.
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Claims 12
Claim · model-written summary
Height, fresh weight and dry weight decreased as nitrate increased.
- Treatment
- increasing of nitrate concentratione0
- Outcome
- plant height,fresh weight,dry weighte0
- Direction
- decreasede0
- Qualifier
- after treated for 6dayse0
Not reportedTaxonComparator
Verbatim
e0“plant height,fresh weight,dry weight and relative water content decreased with the increasing of nitrate concentration after treated for 6days”
Claim · model-written summary
Relative water content decreased with increasing nitrate.
Not reportedTaxonComparator
Verbatim
e0“relative water content decreased with the increasing of nitrate concentration after treated for 6days”
Claim · model-written summary
Root to shoot ratio first increased then decreased with nitrate.
Not reportedTaxonTreatmentComparator
Verbatim
e0“root to shoot ratio increased first and then decreased”
Claim · model-written summary
TBARS, ROS and H2O2 increased with nitrate concentration.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- increasing of nitrate concentratione0
- Outcome
- contents of TBARS,ROS,H2O2e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“contents of TBARS,ROS,H2O2and protein carbonyl(PC)of tomato seedlings increased with the increasing of nitrate concentration”
Claim · model-written summary
Protein carbonyl increased with nitrate concentration.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- increasing of nitrate concentratione0
- Outcome
- protein carbonyl(PC)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“protein carbonyl(PC)of tomato seedlings increased with the increasing of nitrate concentration”
Claim · model-written summary
SOD, POD, CAT and APX activity declined with nitrate concentration.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- increasing of nitrate concentratione0
- Outcome
- activities and gene expression of SOD,POD,CAT and APXe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activities and gene expression of SOD,POD,CAT and APX of tomato seedlings decreased with the increasing of nitrate concentration”
Claim · model-written summary
SOD, POD, CAT and APX gene expression declined with nitrate concentration.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- increasing of nitrate concentratione0
- Outcome
- gene expression of SOD,POD,CAT and APXe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activities and gene expression of SOD,POD,CAT and APX of tomato seedlings decreased with the increasing of nitrate concentration”
Claim · model-written summary
Proline, soluble sugar and soluble protein increased with nitrate concentration.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- increasing of nitrate concentratione0
- Outcome
- contents of proline,soluble sugar and soluble proteine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“contents of proline,soluble sugar and soluble protein of tomato seedlings increased with the increasing of nitrate concentration”
Claim · model-written summary
50mmol·L-1 nitrate had little effect on the plants.
Not reportedTaxonComparator
Verbatim
e0“50mmol·L-1 NO3-had little effect on the plants”
Claim · model-written summary
100 mmol·L-1 nitrate inhibited tomato seedling growth.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- 100 mmol·L-1 NO3-e0
- Outcome
- growth of tomato seedlingse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100 mmol·L-1 NO3-inhibited the growth of tomato seedlings”
Claim · model-written summary
100 mmol·L-1 nitrate damaged membrane lipids.
- Outcome
- damage to the membrane lipide0
Not reportedTaxonTreatmentComparatorDirection
Verbatim
e0“caused damage to the membrane lipid”
Claim · model-written summary
Increased osmotic adjustment substances may confer some nitrate tolerance.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- some tolerant abilitye0
- Qualifier
- increased osmotic adjustment substancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased osmotic adjustment substance could adjust themselves to avoid nitrate stress,which led to some tolerant ability of tomato to nitrate stress”
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