Abstract
A study has been undertaken to investigate the effects of heat stress on the primary metabolites of tall fescue.The heat-tolerant genotype PI 578718 and the heat-sensitive genotype PI 234881 were treated with heat stress(40℃/35℃for 12h/12h)for 21 days in order to determine changes in physiological parameters and metabolites.The results showed that grass quality,chlorophyll content,leaf relative water content,and root activity were all higher in the heat-tolerant PI 578718 than in the heat-sensitive PI 234881,while the value of leaf electrolyte leakage was lower in PI 578718.These results indicate that PI 578718 exhibited significantly more heat tolerance than PI 234881.Polar metabolite analysis of leaf and root using gas chromatography-mass spectrometry identified 25heat-responsive metabolites in the two tall fescue genotypes,mainly consisting of organic acids,amino acids,sugars and sugar alcohols.Most of these metabolites showed higher accumulations in PI578718 compared with PI 234881,especially following long-term(21days)heat stress.The differentially accumulated metabolites,including a sugar alcohol(inositol),two organic acids(citric acid and hexadecanoic acid),one sugar(sucrose)and three amino acids(Val,Glu and Pro),may be positively associated with the differential heat tolerance of the two genotypes.Moreover,citric acid mainly served as an antioxidant and intermediate in respiration metabolisms.Its involvement in other defense pathways may play a vital role in tall fescue adaptation to heat stress.
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Claims 9
Claim · model-written summary
Under heat stress, PI 578718 had higher grass quality, chlorophyll content and leaf relative water content than PI 234881.
- Taxon
- tall fescue
Lolium arundinaceumt0 - Material
- PI 578718e0
- Treatment
- heat stresse0
- Outcome
- grass quality,chlorophyll content,leaf relative water contente1
- Direction
- highere1
- Comparator
- PI 234881e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential metabolic responses of two tall fescue genotypes to heat stress”
e0“The heat-tolerant genotype PI 578718 and the heat-sensitive genotype PI 234881 were treated with heat stress(40℃/35℃for 12h/12h)for 21 days”
e1“grass quality,chlorophyll content,leaf relative water content,and root activity were all higher in the heat-tolerant PI 578718 than in the heat-sensitive PI 234881”
Claim · model-written summary
Under heat stress, root activity was higher in PI 578718 than in PI 234881.
- Taxon
- tall fescueLolium arundinaceumt0
- Material
- PI 578718e0
- Treatment
- heat stresse0
- Outcome
- root activitye1
- Direction
- highere1
- Comparator
- PI 234881e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential metabolic responses of two tall fescue genotypes to heat stress”
e0“The heat-tolerant genotype PI 578718 and the heat-sensitive genotype PI 234881 were treated with heat stress(40℃/35℃for 12h/12h)for 21 days”
e1“grass quality,chlorophyll content,leaf relative water content,and root activity were all higher in the heat-tolerant PI 578718 than in the heat-sensitive PI 234881”
Claim · model-written summary
Under heat stress, leaf electrolyte leakage was lower in PI 578718 than in PI 234881.
- Taxon
- tall fescueLolium arundinaceumt0
- Material
- PI 578718e2
- Treatment
- heat stresse0
- Outcome
- leaf electrolyte leakagee2
- Direction
- lowere2
- Comparator
- PI 234881e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential metabolic responses of two tall fescue genotypes to heat stress”
e0“The heat-tolerant genotype PI 578718 and the heat-sensitive genotype PI 234881 were treated with heat stress(40℃/35℃for 12h/12h)for 21 days”
e1“the heat-sensitive PI 234881”
e2“the value of leaf electrolyte leakage was lower in PI 578718”
Claim · model-written summary
PI 578718 showed significantly more heat tolerance than PI 234881.
- Taxon
- tall fescueLolium arundinaceumt0
- Material
- PI 578718e3
- Treatment
- heat stresse0
- Outcome
- heat tolerancee3
- Direction
- significantly moree3
- Comparator
- PI 234881e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential metabolic responses of two tall fescue genotypes to heat stress”
e0“The heat-tolerant genotype PI 578718 and the heat-sensitive genotype PI 234881 were treated with heat stress(40℃/35℃for 12h/12h)for 21 days”
e3“PI 578718 exhibited significantly more heat tolerance than PI 234881”
Claim · model-written summary
25 heat-responsive metabolites were identified in the two tall fescue genotypes.
- Taxon
- tall fescueLolium arundinaceumt0
- Material
- two tall fescue genotypese4
- Outcome
- heat-responsive metabolitese4
- Value
- 25e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential metabolic responses of two tall fescue genotypes to heat stress”
e4“identified 25heat-responsive metabolites in the two tall fescue genotypes”
Claim · model-written summary
Most differentially accumulated metabolites were higher in PI 578718 than in PI 234881, especially after long-term heat stress.
- Taxon
- tall fescueLolium arundinaceumt0
- Material
- PI578718e5
- Treatment
- heat stresse5
- Outcome
- accumulationse5
- Direction
- highere5
- Qualifier
- especially following long-term(21days)heat stresse5
- Comparator
- PI 234881e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential metabolic responses of two tall fescue genotypes to heat stress”
e5“Most of these metabolites showed higher accumulations in PI578718 compared with PI 234881,especially following long-term(21days)heat stress”
Claim · model-written summary
Differentially accumulated metabolites, including inositol, may be positively associated with the differential heat tolerance of the two genotypes.
- Taxon
- tall fescueLolium arundinaceumt0
- Compound
- inositole6
- Outcome
- differential heat tolerancee6
- Direction
- positively associatede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential metabolic responses of two tall fescue genotypes to heat stress”
e6“a sugar alcohol(inositol),two organic acids(citric acid and hexadecanoic acid),one sugar(sucrose)and three amino acids(Val,Glu and Pro),may be positively associated with the differential heat tolerance of the two genotypes”
Claim · model-written summary
Citric acid mainly served as an antioxidant and intermediate in respiration in tall fescue under heat stress.
- Taxon
- tall fescueLolium arundinaceumt0
- Compound
- citric acide7
- Outcome
- antioxidante7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential metabolic responses of two tall fescue genotypes to heat stress”
e7“Moreover,citric acid mainly served as an antioxidant and intermediate in respiration metabolisms.Its involvement in other defense pathways may play a vital role in tall fescue adaptation to heat stress”
Claim · model-written summary
Citric acid involvement in other defense pathways may play a vital role in tall fescue adaptation to heat stress.
- Taxon
- tall fescueLolium arundinaceumt0
- Compound
- citric acide7
- Outcome
- adaptation to heat stresse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential metabolic responses of two tall fescue genotypes to heat stress”
e7“Moreover,citric acid mainly served as an antioxidant and intermediate in respiration metabolisms.Its involvement in other defense pathways may play a vital role in tall fescue adaptation to heat stress”
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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.