Abstract
This paper studied the effects of different concentration (0, 10, 30, 50, and 100 micromol x L(-1)) CuSO4 on the leaf physiological and biochemical characteristics of Medicago sativa seedlings cultured with 1/4-strength Hoagland nutrient solution. In treatments 30, 50, and 100 micromol x L(-1) of CuSO4, the leaf H2O2, OH., and MDA contents and Fe-SOD and EST activities increased, and GSH and AsA contents increased significantly. With increasing concentration Cu, the POD, GR, and APX activities increased gradually, and the CAT and G6PDH activities decreased after an initial increase. In treatments >10 micromol x L(-1) of Cu, the capacity of leaf antioxidative system in reactive oxygen species scavenging increased to prevent the injury from copper-induced oxidative stress.
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Claims 6
Claim · model-written summary
CuSO4 at 30, 50 and 100 micromol/L increased leaf H2O2, OH. and MDA contents
- Taxon
- Medicago sativa
Medicago sativat0 - Organ / stage
- leafe2
- Treatment
- 30, 50, and 100 micromol x L(-1) of CuSO4e1
- Outcome
- H2O2, OH., and MDA contentse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of copper stress on Medicago sativa seedlings”
e1“In treatments 30, 50, and 100 micromol x L(-1) of CuSO4”
e2“the leaf H2O2, OH., and MDA contents and Fe-SOD and EST activities increased”
Claim · model-written summary
CuSO4 at 30, 50 and 100 micromol/L increased leaf Fe-SOD and EST activities
- Taxon
- Medicago sativaMedicago sativat0
- Organ / stage
- leafe2
- Treatment
- 30, 50, and 100 micromol x L(-1) of CuSO4e1
- Outcome
- Fe-SOD and EST activitiese2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of copper stress on Medicago sativa seedlings”
e1“In treatments 30, 50, and 100 micromol x L(-1) of CuSO4”
e2“the leaf H2O2, OH., and MDA contents and Fe-SOD and EST activities increased”
Claim · model-written summary
CuSO4 at 30, 50 and 100 micromol/L significantly increased leaf GSH and AsA contents
- Taxon
- Medicago sativaMedicago sativat0
- Treatment
- 30, 50, and 100 micromol x L(-1) of CuSO4e1
- Outcome
- GSH and AsA contentse3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of copper stress on Medicago sativa seedlings”
e1“In treatments 30, 50, and 100 micromol x L(-1) of CuSO4”
e3“GSH and AsA contents increased significantly”
Claim · model-written summary
Increasing Cu concentration increased leaf POD, GR and APX activities gradually
- Taxon
- Medicago sativaMedicago sativat0
- Treatment
- increasing concentration Cue4
- Outcome
- POD, GR, and APX activitiese4
- Direction
- increased graduallye4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of copper stress on Medicago sativa seedlings”
e4“With increasing concentration Cu, the POD, GR, and APX activities increased gradually”
Claim · model-written summary
Increasing Cu concentration decreased leaf CAT and G6PDH activities after an initial increase
- Taxon
- Medicago sativaMedicago sativat0
- Treatment
- increasing concentration Cue4
- Outcome
- CAT and G6PDH activitiese5
- Direction
- decreasede5
- Qualifier
- after an initial increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of copper stress on Medicago sativa seedlings”
e4“With increasing concentration Cu, the POD, GR, and APX activities increased gradually”
e5“the CAT and G6PDH activities decreased after an initial increase”
Claim · model-written summary
Cu above 10 micromol/L increased the leaf antioxidative capacity for reactive oxygen species scavenging, preventing copper-induced injury
- Taxon
- Medicago sativaMedicago sativat0
- Organ / stage
- leafe7
- Treatment
- >10 micromol x L(-1) of Cue6
- Outcome
- capacity of leaf antioxidative system in reactive oxygen species scavenginge7
- Direction
- increasede7
- Qualifier
- to prevent the injury from copper-induced oxidative stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of copper stress on Medicago sativa seedlings”
e6“In treatments >10 micromol x L(-1) of Cu”
e7“the capacity of leaf antioxidative system in reactive oxygen species scavenging increased”
e0“to prevent the injury from copper-induced oxidative stress”
The same questions in other papers
copper(II) sulfate · nutrient: content · Medicago sativa (alfalfa)Positive and negative results
1 in the opposite direction
- no effect
copper atom · physiology: oxidative · Medicago sativa (alfalfa)Positive and negative results
1 in the opposite direction
- negative
copper atom · physiology: antioxidant enzymes · Medicago sativa (alfalfa)Results agree
1 paper in the same direction as this paper
- positive
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.