Abstract
With wheat and pea seedlings as test materials, this paper studied the effects of UV-C radiation on their leaf photosynthetic characteristics and antioxidant enzyme activities. The results showed that enhanced UV-C radiation could markedly decrease the photosynthetic rate (Pn) , stomatal conductance (Gs), intercellular CO2 concentration (Ci), transpiration rate (Tr) and carboxylation efficiency (CE) of pea leaves, but for wheat leaves, these parameters were increased first and decreased then. Under UV-C condition, the CO2 compensation point of leaf was increased for pea, but decreased first and increased then for wheat. With the increasing duration of UV-C radiation, the antioxidant enzyme activities of both test plants increased first and decreased then, except that the POD activity of pea and SOD activity of wheat decreased gradually. All of these suggested that wheat had a stronger resistance to short-time UV-C radiation than pea, but, with the prolonged duration of UV-C radiation, the photosynthesis and antioxidant enzyme activities of wheat and pea were all decreased.
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Claims 12
Claim · model-written summary
Enhanced UV-C radiation decreased photosynthetic rate, stomatal conductance and intercellular CO2 concentration of pea leaves.
- Taxon
- pea
Lathyrus oleraceuse1 - Treatment
- enhanced UV-C radiatione1
- Outcome
- photosynthetic rate (Pn) , stomatal conductance (Gs), intercellular CO2 concentration (Ci)e1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“enhanced UV-C radiation could markedly decrease the photosynthetic rate (Pn) , stomatal conductance (Gs), intercellular CO2 concentration (Ci), transpiration rate (Tr) and carboxylation efficiency (CE) of pea leaves”
Claim · model-written summary
Enhanced UV-C radiation decreased transpiration rate and carboxylation efficiency of pea leaves.
- Taxon
- peaLathyrus oleraceuse1
- Treatment
- enhanced UV-C radiatione1
- Outcome
- transpiration rate (Tr) and carboxylation efficiency (CE)e1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“enhanced UV-C radiation could markedly decrease the photosynthetic rate (Pn) , stomatal conductance (Gs), intercellular CO2 concentration (Ci), transpiration rate (Tr) and carboxylation efficiency (CE) of pea leaves”
Claim · model-written summary
In wheat leaves, the photosynthetic parameters first increased and then decreased under enhanced UV-C radiation.
- Taxon
- wheat
Triticum aestivume2 - Treatment
- enhanced UV-C radiatione1
- Outcome
- these parameterse2
- Direction
- increased first and decreased thene2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“enhanced UV-C radiation could markedly decrease the photosynthetic rate (Pn) , stomatal conductance (Gs), intercellular CO2 concentration (Ci), transpiration rate (Tr) and carboxylation efficiency (CE) of pea leaves”
e2“for wheat leaves, these parameters were increased first and decreased then”
Claim · model-written summary
Under UV-C, the CO2 compensation point of pea leaves increased.
- Taxon
- peaLathyrus oleraceuse3
- Treatment
- UV-C conditione3
- Outcome
- CO2 compensation point of leafe3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Under UV-C condition, the CO2 compensation point of leaf was increased for pea, but decreased first and increased then for wheat”
Claim · model-written summary
Under UV-C, the CO2 compensation point of wheat leaves first decreased and then increased.
- Taxon
- wheatTriticum aestivume3
- Treatment
- UV-C conditione3
- Outcome
- CO2 compensation point of leafe3
- Direction
- decreased first and increased thene3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Under UV-C condition, the CO2 compensation point of leaf was increased for pea, but decreased first and increased then for wheat”
Claim · model-written summary
With longer UV-C exposure, POD activity of pea seedlings decreased gradually.
- Taxon
- peaLathyrus oleraceuse5
- Treatment
- increasing duration of UV-C radiatione5
- Outcome
- POD activitye5
- Direction
- decreased graduallye5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“With the increasing duration of UV-C radiation, the antioxidant enzyme activities of both test plants increased first and decreased then, except that the POD activity of pea and SOD activity of wheat decreased gradually”
Claim · model-written summary
With longer UV-C exposure, SOD activity of wheat seedlings decreased gradually.
- Taxon
- wheatTriticum aestivume5
- Treatment
- increasing duration of UV-C radiatione5
- Outcome
- SOD activitye5
- Direction
- decreased graduallye5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“With the increasing duration of UV-C radiation, the antioxidant enzyme activities of both test plants increased first and decreased then, except that the POD activity of pea and SOD activity of wheat decreased gradually”
Claim · model-written summary
Antioxidant enzyme activities of pea seedlings first increased and then decreased with longer UV-C exposure.
- Taxon
- peaLathyrus oleraceuse5
- Treatment
- increasing duration of UV-C radiatione5
- Outcome
- antioxidant enzyme activitiese5
- Direction
- increased first and decreased thene5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“With the increasing duration of UV-C radiation, the antioxidant enzyme activities of both test plants increased first and decreased then, except that the POD activity of pea and SOD activity of wheat decreased gradually”
Claim · model-written summary
Antioxidant enzyme activities of wheat seedlings first increased and then decreased with longer UV-C exposure.
- Taxon
- wheatTriticum aestivume5
- Treatment
- increasing duration of UV-C radiatione5
- Outcome
- antioxidant enzyme activitiese5
- Direction
- increased first and decreased thene5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“With the increasing duration of UV-C radiation, the antioxidant enzyme activities of both test plants increased first and decreased then, except that the POD activity of pea and SOD activity of wheat decreased gradually”
Claim · model-written summary
Wheat had a stronger resistance than pea to short-time UV-C radiation.
- Taxon
- wheatTriticum aestivume6
- Treatment
- short-time UV-C radiatione6
- Outcome
- resistancee6
- Direction
- stronger resistancee6
- Comparator
- peae6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“All of these suggested that wheat had a stronger resistance to short-time UV-C radiation than pea, but, with the prolonged duration of UV-C radiation, the photosynthesis and antioxidant enzyme activities of wheat and pea were all decreased”
Claim · model-written summary
With prolonged UV-C radiation, photosynthesis and antioxidant enzyme activities of wheat decreased.
- Taxon
- wheatTriticum aestivume6
- Treatment
- prolonged duration of UV-C radiatione6
- Outcome
- photosynthesis and antioxidant enzyme activitiese6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“All of these suggested that wheat had a stronger resistance to short-time UV-C radiation than pea, but, with the prolonged duration of UV-C radiation, the photosynthesis and antioxidant enzyme activities of wheat and pea were all decreased”
Claim · model-written summary
With prolonged UV-C radiation, photosynthesis and antioxidant enzyme activities of pea decreased.
- Taxon
- peaLathyrus oleraceuse6
- Treatment
- prolonged duration of UV-C radiatione6
- Outcome
- photosynthesis and antioxidant enzyme activitiese6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“All of these suggested that wheat had a stronger resistance to short-time UV-C radiation than pea, but, with the prolonged duration of UV-C radiation, the photosynthesis and antioxidant enzyme activities of wheat and pea were all decreased”
The same questions in other papers
uv · physiology: antioxidant enzymes · Triticum aestivum (wheat)Results differ
4 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
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See all 13 papers →uv · physiology: photosynthesis · Lathyrus oleraceus (pea)Results differ
17 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
17 papers more in this group
See all 21 papers →uv · physiology: antioxidant enzymes · Lathyrus oleraceus (pea)Positive and negative results
2 in the opposite direction
- positive
- positive
uv · soil: biology · Triticum aestivum (wheat)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
uv · disease · Triticum aestivum (wheat)Results agree
2 papers in the same direction as this paper
- positive
- positive
uv · physiology: gas exchange · Lathyrus oleraceus (pea)Results agree
2 papers in the same direction as this paper
- negative
- negative
uv · soil: biology · Lathyrus oleraceus (pea)Results agree
2 papers in the same direction as this paper
- negative
- no effect
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.