Abstract
Different concentration of Pb(CH_(3)COO)_(2) and CdCl_(2) solution were used in the experiment to soak the rice seed in order to study the effect of Pb~(2+) and Cd~(2+) stress on rice germination and seedling growth,the germination vigor and germination percentage of seeds and seedling growth were measured,meanwhile SOD,CAT,POD activities of leaves and root tips were also measured.The result shows: when the concentration of Pb~(2+) was lower than (400mg/L) or when the concentration of Cd~(2+) was lower than 5mg/L, rice germination and seedling growth were increased, when the concentration was higher, rice germination and seedling growth were decreased. Moreover when the concentration of Pb~(2+) was lower than 400mg/L or when the concentration of Cd~(2+) was lower than 5mg/L, SOD, CAT, POD activities were improved and MDA content was decreased, while the concentration of Pb~(2+) or Cd~(2+) exceeded the content mentioned above, the opposite is true; growth and antioxidant enzyme of roots were more sensitive than stems and leaves when stressed by Pb (CH_(3)COO)_(2) and CdCl_(2); rice was more sensitive to the stress of Cd~(2+) than Pb~(2+).
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Claims 8
Claim · model-written summary
Pb2+ below 400 mg/L increased rice germination and seedling growth.
- Taxon
- rice
Oryza sativae0 - Treatment
- concentration of Pb~(2+) was lower than (400mg/L)e1
- Outcome
- germination and seedling growthe1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of Pb~(2+) and Cd~(2+) stress on rice germination and seedling growth”
e1“when the concentration of Pb~(2+) was lower than (400mg/L) or when the concentration of Cd~(2+) was lower than 5mg/L, rice germination and seedling growth were increased”
Claim · model-written summary
Cd2+ below 5 mg/L increased rice germination and seedling growth.
- Taxon
- riceOryza sativae0
- Treatment
- concentration of Cd~(2+) was lower than 5mg/Le1
- Outcome
- germination and seedling growthe1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of Pb~(2+) and Cd~(2+) stress on rice germination and seedling growth”
e1“when the concentration of Pb~(2+) was lower than (400mg/L) or when the concentration of Cd~(2+) was lower than 5mg/L, rice germination and seedling growth were increased”
Claim · model-written summary
At higher Pb2+ or Cd2+ concentrations, rice germination and seedling growth decreased.
- Taxon
- riceOryza sativae0
- Treatment
- the concentration was highere6
- Outcome
- germination and seedling growthe6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of Pb~(2+) and Cd~(2+) stress on rice germination and seedling growth”
e6“when the concentration was higher, rice germination and seedling growth were decreased”
Claim · model-written summary
Low Pb2+ or Cd2+ improved SOD, CAT and POD activities in rice.
- Taxon
- riceOryza sativae0
- Treatment
- the concentration of Pb~(2+) was lower than 400mg/Le2
- Outcome
- SOD, CAT, POD activitiese2
- Direction
- improvede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of Pb~(2+) and Cd~(2+) stress on rice germination and seedling growth”
e2“Moreover when the concentration of Pb~(2+) was lower than 400mg/L or when the concentration of Cd~(2+) was lower than 5mg/L, SOD, CAT, POD activities were improved and MDA content was decreased”
Claim · model-written summary
Low Pb2+ or Cd2+ decreased MDA content in rice.
- Taxon
- riceOryza sativae0
- Treatment
- the concentration of Pb~(2+) was lower than 400mg/Le2
- Outcome
- MDA contente2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of Pb~(2+) and Cd~(2+) stress on rice germination and seedling growth”
e2“Moreover when the concentration of Pb~(2+) was lower than 400mg/L or when the concentration of Cd~(2+) was lower than 5mg/L, SOD, CAT, POD activities were improved and MDA content was decreased”
Claim · model-written summary
At Pb2+ or Cd2+ concentrations above those thresholds, SOD, CAT and POD activities and MDA content showed the opposite response.
- Taxon
- riceOryza sativae0
- Treatment
- the concentration of Pb~(2+) or Cd~(2+) exceeded the content mentioned abovee3
- Outcome
- SOD, CAT, POD activitiese2
- Direction
- the opposite is truee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of Pb~(2+) and Cd~(2+) stress on rice germination and seedling growth”
e2“Moreover when the concentration of Pb~(2+) was lower than 400mg/L or when the concentration of Cd~(2+) was lower than 5mg/L, SOD, CAT, POD activities were improved and MDA content was decreased”
e3“while the concentration of Pb~(2+) or Cd~(2+) exceeded the content mentioned above, the opposite is true”
Claim · model-written summary
Roots of rice were more sensitive than stems and leaves to Pb and Cd stress.
- Taxon
- riceOryza sativae0
- Organ / stage
- rootse4
- Treatment
- Pb (CH_(3)COO)_(2) and CdCl_(2)e4
- Outcome
- growth and antioxidant enzyme of rootse4
- Direction
- more sensitivee4
- Comparator
- stems and leavese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of Pb~(2+) and Cd~(2+) stress on rice germination and seedling growth”
e4“growth and antioxidant enzyme of roots were more sensitive than stems and leaves when stressed by Pb (CH_(3)COO)_(2) and CdCl_(2)”
Claim · model-written summary
Rice was more sensitive to Cd2+ stress than to Pb2+ stress.
- Taxon
- riceOryza sativae5
- Treatment
- the stress of Cd~(2+)e5
- Outcome
- sensitivee5
- Direction
- moree5
- Comparator
- Pb~(2+)e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of Pb~(2+) and Cd~(2+) stress on rice germination and seedling growth”
e5“rice was more sensitive to the stress of Cd~(2+) than Pb~(2+)”
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See all 7 papers →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.