Abstract
【Objective】Cotton is a typical thermophilic crop.It is sensitive to low temperature stress,cold stress influenced greatly on cotton production,so it is of much improtance to explore the effects of exogenous NO donor(SNP) on cotton resistance ability.【Method】‘Xinluzao 13’ and ‘Xinluzao 33’ were used as materials in this experiment to investigate the effect of SNP(100 μmol.L-1) on growth,chlorophyll content,gas exchange parameters,cholorophyll fluorescence parameters and active oxygen metabolism in seedlings of cotton cultivar under chilling stress.【Result】 It was found that SNP had no significant influence on growth,H 2 O 2,Pro,soluble protein and SOD,but improved the activities of POD,CAT,APX and GR significantly under normal growth conditions.SNP had no obvious influence on chlorophyll content,Pn,Ci,F 0 and Fv/Fm,but increased Gs,Tr,ETR and Φ PSⅡ significantly.Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents.Exogenous NO increased chlorophyll content,Pn,Gs,Tr,Fv/Fm,ETR and Φ PSⅡ,reduced Ci but increased NPQ,avoided excessive light damage and maintained higher PSⅡ activity.【Conclusion】Under chilling stress,exogenous NO application reduced the accumulation of H 2 O 2 and MDA,and protected the stabilization of membrane via enhancing the antioxidant enzymes activities and the contents of antioxidants,and enhanced cold tolerance in cotton seedlings and alleviated chilling stress damage to PSII center.
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Claims 20
Claim · model-written summary
Under normal conditions, SNP had no significant effect on growth.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- SNPe1
- Outcome
- growthe1
- Direction
- no significant influencee1
- Setting
- normal growth conditionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e1“SNP had no significant influence on growth,H 2 O 2,Pro,soluble protein and SOD,but improved the activities of POD,CAT,APX and GR significantly under normal growth conditions”
Claim · model-written summary
Under normal conditions, SNP had no significant effect on H2O2, proline and soluble protein.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SNPe1
- Outcome
- H 2 O 2,Pro,soluble proteine1
- Direction
- no significant influencee1
- Setting
- normal growth conditionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e1“SNP had no significant influence on growth,H 2 O 2,Pro,soluble protein and SOD,but improved the activities of POD,CAT,APX and GR significantly under normal growth conditions”
Claim · model-written summary
Under normal conditions, SNP had no significant effect on SOD activity.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SNPe1
- Outcome
- SODe1
- Direction
- no significant influencee1
- Setting
- normal growth conditionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e1“SNP had no significant influence on growth,H 2 O 2,Pro,soluble protein and SOD,but improved the activities of POD,CAT,APX and GR significantly under normal growth conditions”
Claim · model-written summary
Under normal conditions, SNP significantly improved the activities of POD, CAT and APX.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SNPe1
- Outcome
- activities of POD,CAT,APXe1
- Direction
- improvede1
- Setting
- normal growth conditionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e1“SNP had no significant influence on growth,H 2 O 2,Pro,soluble protein and SOD,but improved the activities of POD,CAT,APX and GR significantly under normal growth conditions”
Claim · model-written summary
Under normal conditions, SNP significantly improved GR activity.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SNPe1
- Outcome
- GRe1
- Direction
- improvede1
- Setting
- normal growth conditionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e1“SNP had no significant influence on growth,H 2 O 2,Pro,soluble protein and SOD,but improved the activities of POD,CAT,APX and GR significantly under normal growth conditions”
Claim · model-written summary
Under normal conditions, SNP had no obvious effect on chlorophyll content, Pn and Ci.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SNPe2
- Outcome
- chlorophyll content,Pn,Cie2
- Direction
- no obvious influencee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e2“SNP had no obvious influence on chlorophyll content,Pn,Ci,F 0 and Fv/Fm,but increased Gs,Tr,ETR and Φ PSⅡ significantly”
Claim · model-written summary
Under normal conditions, SNP had no obvious effect on F0 and Fv/Fm.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SNPe2
- Outcome
- F 0 and Fv/Fme2
- Direction
- no obvious influencee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e2“SNP had no obvious influence on chlorophyll content,Pn,Ci,F 0 and Fv/Fm,but increased Gs,Tr,ETR and Φ PSⅡ significantly”
Claim · model-written summary
Under normal conditions, SNP significantly increased Gs and Tr.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SNPe2
- Outcome
- Gs,Tre2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e2“SNP had no obvious influence on chlorophyll content,Pn,Ci,F 0 and Fv/Fm,but increased Gs,Tr,ETR and Φ PSⅡ significantly”
Claim · model-written summary
Under normal conditions, SNP significantly increased ETR and ΦPSII.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- SNPe2
- Outcome
- ETR and Φ PSⅡe2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e2“SNP had no obvious influence on chlorophyll content,Pn,Ci,F 0 and Fv/Fm,but increased Gs,Tr,ETR and Φ PSⅡ significantly”
Claim · model-written summary
Under chilling stress, exogenous NO significantly increased the growth rate of leaves.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- exogenous NOe3
- Outcome
- growth ratee3
- Direction
- increasede3
- Qualifier
- Under chilling stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e3“Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents”
Claim · model-written summary
Under chilling stress, exogenous NO significantly increased SOD, POD and CAT activities in leaves.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- exogenous NOe3
- Outcome
- SOD,POD,CATe3
- Direction
- increasede3
- Qualifier
- Under chilling stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e3“Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents”
Claim · model-written summary
Under chilling stress, exogenous NO significantly increased APX and GR activities in leaves.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- exogenous NOe3
- Outcome
- APX and GR activitiese3
- Direction
- increasede3
- Qualifier
- Under chilling stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e3“Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents”
Claim · model-written summary
Under chilling stress, exogenous NO reduced H2O2 and MDA contents.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- exogenous NOe3
- Outcome
- H 2 O 2 and MDA contentse3
- Direction
- reducede3
- Qualifier
- Under chilling stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e3“Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents”
Claim · model-written summary
Under chilling stress, exogenous NO increased chlorophyll content and Pn.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Exogenous NOe4
- Outcome
- chlorophyll content,Pne4
- Direction
- increasede4
- Qualifier
- Under chilling stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e4“Exogenous NO increased chlorophyll content,Pn,Gs,Tr,Fv/Fm,ETR and Φ PSⅡ,reduced Ci but increased NPQ,avoided excessive light damage and maintained higher PSⅡ activity”
e3“Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents”
Claim · model-written summary
Under chilling stress, exogenous NO increased Gs and Tr.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Exogenous NOe4
- Outcome
- Gs,Tre4
- Direction
- increasede4
- Qualifier
- Under chilling stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e4“Exogenous NO increased chlorophyll content,Pn,Gs,Tr,Fv/Fm,ETR and Φ PSⅡ,reduced Ci but increased NPQ,avoided excessive light damage and maintained higher PSⅡ activity”
e3“Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents”
Claim · model-written summary
Under chilling stress, exogenous NO increased Fv/Fm, ETR and ΦPSII.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Exogenous NOe4
- Outcome
- Fv/Fm,ETR and Φ PSⅡe4
- Direction
- increasede4
- Qualifier
- Under chilling stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e4“Exogenous NO increased chlorophyll content,Pn,Gs,Tr,Fv/Fm,ETR and Φ PSⅡ,reduced Ci but increased NPQ,avoided excessive light damage and maintained higher PSⅡ activity”
e3“Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents”
Claim · model-written summary
Under chilling stress, exogenous NO reduced intercellular CO2 (Ci).
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Exogenous NOe4
- Outcome
- Cie4
- Direction
- reducede4
- Qualifier
- Under chilling stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e4“Exogenous NO increased chlorophyll content,Pn,Gs,Tr,Fv/Fm,ETR and Φ PSⅡ,reduced Ci but increased NPQ,avoided excessive light damage and maintained higher PSⅡ activity”
e3“Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents”
Claim · model-written summary
Under chilling stress, exogenous NO increased NPQ.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Exogenous NOe4
- Outcome
- NPQe4
- Direction
- increasede4
- Qualifier
- Under chilling stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e4“Exogenous NO increased chlorophyll content,Pn,Gs,Tr,Fv/Fm,ETR and Φ PSⅡ,reduced Ci but increased NPQ,avoided excessive light damage and maintained higher PSⅡ activity”
e3“Under chilling stress,exogenous NO treatments significantly increased the growth rate,SOD,POD,CAT,APX and GR activities of leaves,but reduced H 2 O 2 and MDA contents”
Claim · model-written summary
Exogenous NO maintained higher PSII activity, avoided excessive light damage and alleviated chilling damage to PSII.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Exogenous NOe4
- Outcome
- PSⅡ activitye4
- Direction
- highere4
- Qualifier
- avoided excessive light damagee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e4“Exogenous NO increased chlorophyll content,Pn,Gs,Tr,Fv/Fm,ETR and Φ PSⅡ,reduced Ci but increased NPQ,avoided excessive light damage and maintained higher PSⅡ activity”
e5“Under chilling stress,exogenous NO application reduced the accumulation of H 2 O 2 and MDA,and protected the stabilization of membrane via enhancing the antioxidant enzymes activities and the contents of antioxidants,and enhanced cold tolerance in cotton seedlings and alleviated chilling stress damage to PSII center”
Claim · model-written summary
Under chilling stress, exogenous NO application enhanced cold tolerance in cotton seedlings.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- exogenous NO applicatione5
- Outcome
- cold tolerancee5
- Direction
- enhancede5
- Qualifier
- Under chilling stresse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Seedling of Cotton Cultivar”
e5“Under chilling stress,exogenous NO application reduced the accumulation of H 2 O 2 and MDA,and protected the stabilization of membrane via enhancing the antioxidant enzymes activities and the contents of antioxidants,and enhanced cold tolerance in cotton seedlings and alleviated chilling stress damage to PSII center”
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8 of 11 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.