Abstract
The impact of the combined stress factors of heavy metals (cadmium and nickel) and UV A+B radiation in Pisum sativum was investigated. Seeds were grown in sandy loam for 30 days, and then randomly divided into equal two groups. The first group was exposed for 5 hours/day to supplemental 6.4 KJ m −2 d −1 dose UV A+B radiation beside white light (1,100 Lux), while the second one was exposed to white light only giving light intensity (1,100 Lux). Plants from each group were irrigated with nutrient solution having 0.0, 5, 10 and 20 μmol Cd or Ni for two weeks and then harvested. The results showed that, Cd or Ni treatments induced significant decreased the length, fresh weight, dry weight and density of both root and shoot. UV A+B resulted in synergistic inhibitory effects of all measured growth parameters. Total chlorophyll, carotenoids, total carbohydrates and proteins showed a similar pattern to that of growth parameters. The amount of UV-screening pigments was highest under supplement of UV A+B radiation, while the combination of Cd or Ni and UV A+B caused further decrease. Thus, it could be shown that the combined treatment of UV A+B and Cd or Ni was antagonistic on UV-screening pigments. The combined sterss of UV A+B radiation an Cd or Ni also resulted in a reduction of peroxidase and catalase activity, while H 2 O 2 level and anthocyanin content were increased in Pisum sativum plant. The data showed that in some measured parameters there was a UV A+B and Cd or Ni synergistic effect, while with other parameters an antagonistic action was observed.
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Claims 9
Claim · model-written summary
Cd or Ni treatments significantly decreased the length, fresh weight and dry weight of pea roots and shoots.
- Taxon
- Pisum sativum
Lathyrus oleraceust0 - Organ / stage
- root and shoote1
- Treatment
- Cd or Ni treatmentse1
- Outcome
- length, fresh weight, dry weighte1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pisum sativum”
e1“Cd or Ni treatments induced significant decreased the length, fresh weight, dry weight and density of both root and shoot”
Claim · model-written summary
Cd or Ni treatments significantly decreased the density of pea roots and shoots.
- Taxon
- Pisum sativumLathyrus oleraceust0
- Organ / stage
- root and shoote1
- Treatment
- Cd or Ni treatmentse1
- Outcome
- density of both root and shoote1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pisum sativum”
e1“Cd or Ni treatments induced significant decreased the length, fresh weight, dry weight and density of both root and shoot”
Claim · model-written summary
UV A+B radiation had synergistic inhibitory effects on all measured growth parameters of pea in combination with the metals.
- Taxon
- Pisum sativumLathyrus oleraceust0
- Treatment
- UV A+Be2
- Outcome
- all measured growth parameterse2
- Direction
- inhibitorye2
- Qualifier
- synergistice2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pisum sativum”
e2“UV A+B resulted in synergistic inhibitory effects of all measured growth parameters”
Claim · model-written summary
Total chlorophyll and carotenoids of pea showed a pattern similar to the growth parameters.
- Taxon
- Pisum sativumLathyrus oleraceust0
- Outcome
- Total chlorophyll, carotenoidse3
- Direction
- decreaseinferrede3
- Comparator
- growth parameterse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pisum sativum”
e3“Total chlorophyll, carotenoids, total carbohydrates and proteins showed a similar pattern to that of growth parameters”
Claim · model-written summary
Total carbohydrates and proteins of pea showed a pattern similar to the growth parameters.
- Taxon
- Pisum sativumLathyrus oleraceust0
- Outcome
- total carbohydrates and proteinse3
- Direction
- decreaseinferrede3
- Comparator
- growth parameterse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pisum sativum”
e3“Total chlorophyll, carotenoids, total carbohydrates and proteins showed a similar pattern to that of growth parameters”
Claim · model-written summary
The amount of UV-screening pigments in pea was highest under supplemental UV A+B radiation.
- Taxon
- Pisum sativumLathyrus oleraceust0
- Treatment
- supplement of UV A+B radiatione4
- Outcome
- amount of UV-screening pigmentse4
- Direction
- higheste4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pisum sativum”
e4“The amount of UV-screening pigments was highest under supplement of UV A+B radiation”
Claim · model-written summary
The combination of Cd or Ni and UV A+B caused a further decrease in UV-screening pigments of pea.
- Taxon
- Pisum sativumLathyrus oleraceust0
- Treatment
- combination of Cd or Ni and UV A+Be4
- Outcome
- UV-screening pigmentse4
- Direction
- further decreasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pisum sativum”
e4“The amount of UV-screening pigments was highest under supplement of UV A+B radiation, while the combination of Cd or Ni and UV A+B caused further decrease”
Claim · model-written summary
The combined stress of UV A+B radiation and Cd or Ni reduced peroxidase and catalase activity in pea.
- Taxon
- Pisum sativumLathyrus oleraceust0
- Treatment
- combined sterss of UV A+B radiation an Cd or Nie5
- Outcome
- peroxidase and catalase activitye5
- Direction
- reductione5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pisum sativum”
e5“The combined sterss of UV A+B radiation an Cd or Ni also resulted in a reduction of peroxidase and catalase activity, while H 2 O 2 level and anthocyanin content were increased in Pisum sativum plant”
Claim · model-written summary
The combined stress of UV A+B radiation and Cd or Ni increased H2O2 level and anthocyanin content in pea.
- Taxon
- Pisum sativumLathyrus oleraceust0
- Treatment
- combined sterss of UV A+B radiation an Cd or Nie5
- Outcome
- H 2 O 2 level and anthocyanin contente5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pisum sativum”
e5“The combined sterss of UV A+B radiation an Cd or Ni also resulted in a reduction of peroxidase and catalase activity, while H 2 O 2 level and anthocyanin content were increased in Pisum sativum plant”
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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.