Abstract
In this project the effect of increasing concentration of benzo[a] pyrene (0.1, 1, 5, 10, 50 and 100 mg/L), the interaction of sodium humate (10, 100 and 500 mg/L) and BaP (0.1–10 mg/L) and the effect of environmental acidity (pH 4.5, 6.5 and 8.5) on the growth of the root and the hypocotyl of lettuce in the dark and in the light was studied. The results obtained document the fact that increasing BaP concentration (0.1–10 mg/L) stimulated the length of both root and hypocotyl of plants growing in the dark as well as in light. Significant inhibition of growth was demonstrated in plants cultivated in BaP of 100 mg/L concentration. Significantly lower lettuce root and hypocotyl growth in comparison with stimulating effects of BaP was recorded in the application of all combinations of BaP with sodium humate. In neutral and alkaline environments (pH 6.5 and 8.5) no significant effect of pH was found on the action of BaP. In an acid environment (pH 4.5) a synergic effect of environmental acidity and BaP toxicity was observed on the inhibition of root elongation. Different plant organs do not exhibit the same sensitivity to the concurrent concentration of BaP in the environment.
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Claims 6
Claim · model-written summary
BaP at 0.1–10 mg/L stimulated lettuce root and hypocotyl length in dark and light.
- Taxon
- lettuce
Lactuca sativae1 - Treatment
- BaP concentration (0.1–10 mg/L)e0
- Outcome
- length of both root and hypocotyle0
- Direction
- stimulatede0
- Qualifier
- in the dark as well as in lighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing BaP concentration (0.1–10 mg/L) stimulated the length of both root and hypocotyl of plants growing in the dark as well as in light.”
e1“root and the hypocotyl of lettuce”
Claim · model-written summary
BaP at 100 mg/L significantly inhibited lettuce growth.
- Taxon
- lettuceLactuca sativae1
- Treatment
- BaP of 100 mg/L concentratione0
- Outcome
- growthe0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant inhibition of growth was demonstrated in plants cultivated in BaP of 100 mg/L concentration.”
e1“root and the hypocotyl of lettuce”
Claim · model-written summary
BaP combined with sodium humate produced significantly lower lettuce root and hypocotyl growth than stimulating BaP alone.
- Taxon
- lettuceLactuca sativae0
- Treatment
- all combinations of BaP with sodium humatee0
- Outcome
- lettuce root and hypocotyl growthe0
- Direction
- lowere0
- Comparator
- BaPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significantly lower lettuce root and hypocotyl growth in comparison with stimulating effects of BaP was recorded in the application of all combinations of BaP with sodium humate.”
Claim · model-written summary
At pH 6.5 and 8.5, pH had no significant effect on BaP action.
- Taxon
- lettuceLactuca sativae1
- Treatment
- pH 6.5 and 8.5e0
- Outcome
- action of BaPe0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In neutral and alkaline environments (pH 6.5 and 8.5) no significant effect of pH was found on the action of BaP.”
e1“root and the hypocotyl of lettuce”
Claim · model-written summary
Acidity at pH 4.5 synergized with BaP toxicity to inhibit root elongation.
- Taxon
- lettuceLactuca sativae1
- Treatment
- environmental acidity and BaP toxicitye0
- Outcome
- root elongatione0
- Direction
- inhibitione0
- Setting
- acid environment (pH 4.5)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In an acid environment (pH 4.5) a synergic effect of environmental acidity and BaP toxicity was observed on the inhibition of root elongation.”
e1“root and the hypocotyl of lettuce”
Claim · model-written summary
Plant organs showed different sensitivity to concurrent environmental BaP.
- Taxon
- lettuceLactuca sativae1
- Outcome
- sensitivity to the concurrent concentration of BaPe0
- Direction
- do not exhibit the samee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different plant organs do not exhibit the same sensitivity to the concurrent concentration of BaP in the environment.”
e1“root and the hypocotyl of lettuce”
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