Abstract
Soil metal contamination leads to a decrease in a yield of crops and is a threat to human health. In the present study, the properties (i.e., photosynthetic pigments, gas-exchange parameters, chlorophyll fluorescence, biomass, leaf area, leaf mass per area) of three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra) grown under various Cu treatments [0, 200, 400, and 600 mg(Cu) kg-1] were measured and analysed. The results showed that soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables. However, it did not significantly influence PSII functions of the three vegetables. It indicates that soil Cu contamination negatively affected photosynthesis particularly due to stomatal factors, but not due to the damage of photosynthetic apparatus.
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Claims 15
Claim · model-written summary
Soil Cu contamination decreased photosynthetic pigments in Brassica chinensis.
- Taxon
- Brassica chinensis
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Brassica rapa subsp. chinensise0 - Treatment
- soil Cu contaminatione1
- Outcome
- photosynthetic pigmentse1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
Claim · model-written summary
Soil Cu contamination decreased gas exchange in Brassica chinensis.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- soil Cu contaminatione1
- Outcome
- gas exchangee1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
Claim · model-written summary
Soil Cu contamination hampered growth of Brassica chinensis.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- soil Cu contaminatione1
- Outcome
- growthe1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
Claim · model-written summary
Soil Cu contamination did not significantly influence PSII functions of Brassica chinensis.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- soil Cu contaminatione1
- Outcome
- PSII functionse2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
e2“However, it did not significantly influence PSII functions of the three vegetables”
Claim · model-written summary
Soil Cu contamination negatively affected photosynthesis of Brassica chinensis, particularly through stomatal factors rather than damage to the photosynthetic apparatus.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- soil Cu contaminatione3
- Outcome
- photosynthesise3
- Qualifier
- stomatal factorse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e3“soil Cu contamination negatively affected photosynthesis particularly due to stomatal factors, but not due to the damage of photosynthetic apparatus”
Claim · model-written summary
Soil Cu contamination decreased photosynthetic pigments in Chrysanthemum coronarium.
- Taxon
- Chrysanthemum coronarium
Glebionis coronariae0 - Treatment
- soil Cu contaminatione1
- Outcome
- photosynthetic pigmentse1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
Claim · model-written summary
Soil Cu contamination decreased gas exchange in Chrysanthemum coronarium.
- Taxon
- Chrysanthemum coronariumGlebionis coronariae0
- Treatment
- soil Cu contaminatione1
- Outcome
- gas exchangee1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
Claim · model-written summary
Soil Cu contamination hampered growth of Chrysanthemum coronarium.
- Taxon
- Chrysanthemum coronariumGlebionis coronariae0
- Treatment
- soil Cu contaminatione1
- Outcome
- growthe1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
Claim · model-written summary
Soil Cu contamination did not significantly influence PSII functions of Chrysanthemum coronarium.
- Taxon
- Chrysanthemum coronariumGlebionis coronariae0
- Treatment
- soil Cu contaminatione1
- Outcome
- PSII functionse2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
e2“However, it did not significantly influence PSII functions of the three vegetables”
Claim · model-written summary
Soil Cu contamination negatively affected photosynthesis of Chrysanthemum coronarium, particularly through stomatal factors rather than damage to the photosynthetic apparatus.
- Taxon
- Chrysanthemum coronariumGlebionis coronariae0
- Treatment
- soil Cu contaminatione3
- Outcome
- photosynthesise3
- Qualifier
- stomatal factorse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e3“soil Cu contamination negatively affected photosynthesis particularly due to stomatal factors, but not due to the damage of photosynthetic apparatus”
Claim · model-written summary
Soil Cu contamination decreased photosynthetic pigments in Brassica alboglabra.
- Taxon
- Brassica alboglabra
Brassica oleracea var. alboglabrae0 - Treatment
- soil Cu contaminatione1
- Outcome
- photosynthetic pigmentse1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
Claim · model-written summary
Soil Cu contamination decreased gas exchange in Brassica alboglabra.
- Taxon
- Brassica alboglabraBrassica oleracea var. alboglabrae0
- Treatment
- soil Cu contaminatione1
- Outcome
- gas exchangee1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
Claim · model-written summary
Soil Cu contamination hampered growth of Brassica alboglabra.
- Taxon
- Brassica alboglabraBrassica oleracea var. alboglabrae0
- Treatment
- soil Cu contaminatione1
- Outcome
- growthe1
- Direction
- decreaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
Claim · model-written summary
Soil Cu contamination did not significantly influence PSII functions of Brassica alboglabra.
- Taxon
- Brassica alboglabraBrassica oleracea var. alboglabrae0
- Treatment
- soil Cu contaminatione1
- Outcome
- PSII functionse2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e1“soil Cu contamination resulted in the damage of photosynthetic pigments, negative effects on gas exchange, and hampered growth of all three vegetables”
e2“However, it did not significantly influence PSII functions of the three vegetables”
Claim · model-written summary
Soil Cu contamination negatively affected photosynthesis of Brassica alboglabra, particularly through stomatal factors rather than damage to the photosynthetic apparatus.
- Taxon
- Brassica alboglabraBrassica oleracea var. alboglabrae0
- Treatment
- soil Cu contaminatione3
- Outcome
- photosynthesise3
- Qualifier
- stomatal factorse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“three green vegetables (i.e., Brassica chinensis, Chrysanthemum coronarium, Brassica alboglabra)”
e3“soil Cu contamination negatively affected photosynthesis particularly due to stomatal factors, but not due to the damage of photosynthetic apparatus”
The same questions in other papers
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1 paper in the same direction as this paper
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1 paper in the same direction as this paper
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heavy metal · physiology: photosynthesis · Brassica oleracea (wild cabbage)Results agree
1 paper in the same direction as this paper
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heavy metal · physiology: gas exchange · Brassica oleracea (wild cabbage)Results agree
1 paper in the same direction as this paper
- negative
heavy metal · growth · Brassica oleracea (wild cabbage)Results agree
3 papers in the same direction as this paper
- negative
- negative
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8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.