Abstract
Effects of duration of UV-C radiation on photosynthetic characteristics and activity of antioxidant enzyme in pea seedlings were studied.Results show that Enhanced UV-C radiation significantly decreased photosynthesis rate(P_n),stomatal conductance(G_s),intercellular CO_2 concentration(C_i),transpiration rate(E_(tr))and carboxylation efficiency(CE).Prolonged duration of UV-C radiation increased the activities of POD and CAT,which soon declined,and kept the activity of SOD,and the content of chlorophyll gradually going down,but the content of MDA going up.The results suggest that enhanced UV-C radiation decreased activities of the antioxidant enzymes and made membrane peroxidated,thus leading to weakened photosynthesis.
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Claims 11
Claim · model-written summary
Enhanced UV-C radiation decreased photosynthesis rate(P_n) in pea seedlings.
- Taxon
- Pea Seedlings
Lathyrus oleraceust0 - Treatment
- Enhanced UV-C radiatione0
- Outcome
- photosynthesis rate(P_n)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced UV-C radiation significantly decreased photosynthesis rate(P_n),stomatal conductance(G_s),intercellular CO_2 concentration(C_i),transpiration rate(E_(tr))and carboxylation efficiency(CE).”
t0“Pea Seedlings”
Claim · model-written summary
Enhanced UV-C radiation decreased stomatal conductance(G_s) in pea seedlings.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Treatment
- Enhanced UV-C radiatione0
- Outcome
- stomatal conductance(G_s)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced UV-C radiation significantly decreased photosynthesis rate(P_n),stomatal conductance(G_s),intercellular CO_2 concentration(C_i),transpiration rate(E_(tr))and carboxylation efficiency(CE).”
t0“Pea Seedlings”
Claim · model-written summary
Enhanced UV-C radiation decreased intercellular CO_2 concentration(C_i) in pea seedlings.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Treatment
- Enhanced UV-C radiatione0
- Outcome
- intercellular CO_2 concentration(C_i)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced UV-C radiation significantly decreased photosynthesis rate(P_n),stomatal conductance(G_s),intercellular CO_2 concentration(C_i),transpiration rate(E_(tr))and carboxylation efficiency(CE).”
t0“Pea Seedlings”
Claim · model-written summary
Enhanced UV-C radiation decreased transpiration rate(E_(tr)) in pea seedlings.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Treatment
- Enhanced UV-C radiatione0
- Outcome
- transpiration rate(E_(tr))e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced UV-C radiation significantly decreased photosynthesis rate(P_n),stomatal conductance(G_s),intercellular CO_2 concentration(C_i),transpiration rate(E_(tr))and carboxylation efficiency(CE).”
t0“Pea Seedlings”
Claim · model-written summary
Enhanced UV-C radiation decreased carboxylation efficiency(CE) in pea seedlings.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Treatment
- Enhanced UV-C radiatione0
- Outcome
- carboxylation efficiency(CE)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced UV-C radiation significantly decreased photosynthesis rate(P_n),stomatal conductance(G_s),intercellular CO_2 concentration(C_i),transpiration rate(E_(tr))and carboxylation efficiency(CE).”
t0“Pea Seedlings”
Claim · model-written summary
With prolonged UV-C exposure, activities of POD and CAT increased in pea seedlings.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Treatment
- UV-C radiatione0
- Outcome
- activities of POD and CATe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Prolonged duration of UV-C radiation increased the activities of POD and CAT,which soon declined”
t0“Pea Seedlings”
Claim · model-written summary
With prolonged UV-C exposure, activities of POD and CAT declined in pea seedlings.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Outcome
- activities of POD and CATe0
- Direction
- declinede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activities of POD and CAT,which soon declined”
t0“Pea Seedlings”
Claim · model-written summary
With prolonged UV-C exposure, activity of SOD kept in pea seedlings.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Outcome
- activity of SODe0
- Direction
- kepte0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“kept the activity of SOD”
t0“Pea Seedlings”
Claim · model-written summary
With prolonged UV-C exposure, content of chlorophyll going down in pea seedlings.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Outcome
- content of chlorophylle0
- Direction
- going downe0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of chlorophyll gradually going down”
t0“Pea Seedlings”
Claim · model-written summary
With prolonged UV-C exposure, content of MDA going up in pea seedlings.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Outcome
- content of MDAe0
- Direction
- going upe0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of MDA going up”
t0“Pea Seedlings”
Claim · model-written summary
The authors attributed weakened photosynthesis to reduced antioxidant enzyme activity and membrane peroxidation under enhanced UV-C radiation.
- Taxon
- Pea SeedlingsLathyrus oleraceust0
- Treatment
- enhanced UV-C radiatione0
- Outcome
- weakened photosynthesise0
- Qualifier
- membrane peroxidatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced UV-C radiation decreased activities of the antioxidant enzymes and made membrane peroxidated,thus leading to weakened photosynthesis”
t0“Pea Seedlings”
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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.