Abstract
The supplementation of Cu- contaminated nutrient solution with 40- 400 mg L-1 of soybean (Glycine max L.) seedlings with 5 mM CaCl2 was studied. Excess Cu2+ caused a significant decrease of growth parameters, photosynthetic pigments (Chl.a, Chl.b, and carotenoids), and Ca2+ concentration in shoots and roots, while enhanced the Cu2+ accumulation. Furthermore, Cu2+ increased the production of ROS, lipid peroxidation as indicated by increase of malondialdhyde (MDA) content, as well as antioxidant enzyme superoxide dismutase and peroxidase (SOD, POD) activities. Excess Cu2+ depressed catalase (CAT) activity in soybean plants. Application of Ca2+ alleviated the inhibitory effect of Cu2+ on growth and oxidative damages as evidenced by lowering hydrogen peroxide (H2O2) and (MDA) contents. Moreover addition of Ca2+ resulted in a significant increase of CAT and POD activities in Cu-stressed soybean seedlings. The results of this study indicated that Ca2+ shift to some extent, the toxic effects of Cu2+ on soybean growth.
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Claims 11
Claim · model-written summary
Excess Cu2+ significantly decreased growth parameters of soybean seedlings.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Excess Cu2+e1
- Outcome
- growth parameterse1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e1“Excess Cu2+ caused a significant decrease of growth parameters, photosynthetic pigments (Chl.a, Chl.b, and carotenoids), and Ca2+ concentration in shoots and roots, while enhanced the Cu2+ accumulation”
Claim · model-written summary
Excess Cu2+ significantly decreased photosynthetic pigments (Chl.a, Chl.b, and carotenoids) of soybean seedlings.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Excess Cu2+e1
- Outcome
- photosynthetic pigments (Chl.a, Chl.b, and carotenoids)e1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e1“Excess Cu2+ caused a significant decrease of growth parameters, photosynthetic pigments (Chl.a, Chl.b, and carotenoids), and Ca2+ concentration in shoots and roots, while enhanced the Cu2+ accumulation”
Claim · model-written summary
Excess Cu2+ significantly decreased Ca2+ concentration in shoots and roots of soybean.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- shoots and rootse1
- Treatment
- Excess Cu2+e1
- Outcome
- Ca2+ concentratione1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e1“Excess Cu2+ caused a significant decrease of growth parameters, photosynthetic pigments (Chl.a, Chl.b, and carotenoids), and Ca2+ concentration in shoots and roots, while enhanced the Cu2+ accumulation”
Claim · model-written summary
Excess Cu2+ enhanced Cu2+ accumulation in soybean seedlings.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Excess Cu2+e1
- Outcome
- Cu2+ accumulatione1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e1“Excess Cu2+ caused a significant decrease of growth parameters, photosynthetic pigments (Chl.a, Chl.b, and carotenoids), and Ca2+ concentration in shoots and roots, while enhanced the Cu2+ accumulation”
Claim · model-written summary
Cu2+ increased the production of reactive oxygen species (ROS) in soybean.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Cu2+e2
- Outcome
- production of ROSe2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e2“Furthermore, Cu2+ increased the production of ROS, lipid peroxidation as indicated by increase of malondialdhyde (MDA) content, as well as antioxidant enzyme superoxide dismutase and peroxidase (SOD, POD) activities”
Claim · model-written summary
Cu2+ increased malondialdehyde (MDA) content in soybean, indicating lipid peroxidation.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Cu2+e2
- Outcome
- malondialdhyde (MDA) contente2
- Direction
- increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e2“Furthermore, Cu2+ increased the production of ROS, lipid peroxidation as indicated by increase of malondialdhyde (MDA) content, as well as antioxidant enzyme superoxide dismutase and peroxidase (SOD, POD) activities”
Claim · model-written summary
Cu2+ increased superoxide dismutase and peroxidase (SOD, POD) activities in soybean.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Cu2+e2
- Outcome
- superoxide dismutase and peroxidase (SOD, POD) activitiese2
- Direction
- increaseinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e2“Furthermore, Cu2+ increased the production of ROS, lipid peroxidation as indicated by increase of malondialdhyde (MDA) content, as well as antioxidant enzyme superoxide dismutase and peroxidase (SOD, POD) activities”
Claim · model-written summary
Excess Cu2+ depressed catalase (CAT) activity in soybean plants.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Excess Cu2+e3
- Outcome
- catalase (CAT) activitye3
- Direction
- depressede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e3“Excess Cu2+ depressed catalase (CAT) activity in soybean plants”
Claim · model-written summary
Ca2+ application alleviated the inhibitory effect of Cu2+ on soybean growth.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Application of Ca2+e4
- Outcome
- inhibitory effect of Cu2+ on growthe4
- Direction
- alleviatede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e4“Application of Ca2+ alleviated the inhibitory effect of Cu2+ on growth and oxidative damages as evidenced by lowering hydrogen peroxide (H2O2) and (MDA) contents”
Claim · model-written summary
Ca2+ application lowered hydrogen peroxide (H2O2) and MDA contents in Cu2+-stressed soybean.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Application of Ca2+e4
- Outcome
- hydrogen peroxide (H2O2) and (MDA) contentse4
- Direction
- loweringe4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e4“Application of Ca2+ alleviated the inhibitory effect of Cu2+ on growth and oxidative damages as evidenced by lowering hydrogen peroxide (H2O2) and (MDA) contents”
Claim · model-written summary
Addition of Ca2+ significantly increased CAT and POD activities in Cu-stressed soybean seedlings.
- Taxon
- soybeanGlycine maxt0
- Treatment
- addition of Ca2+e5
- Outcome
- CAT and POD activitiese5
- Direction
- increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“GLYCINE MAX L. (SOYBEAN)”
e5“Moreover addition of Ca2+ resulted in a significant increase of CAT and POD activities in Cu-stressed soybean seedlings”
The same questions in other papers
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- negative
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copper(2+) · growth · Glycine max (soybean)Positive and negative results
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calcium(2+) · growth · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
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calcium(2+) · physiology: antioxidant enzymes · Glycine max (soybean)Results agree
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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.