Abstract
A comparative study was carried out on the effect of molybdenum (Mo), nickel (Ni), cadmium (Cd), and lead (Pb) using concentrations of 1×10− 7, 1×10− 5, and 1×10− 3 mol dm− 3, on the metabolism of nitrogen and proteins in young pea plants (Pisum sativum L. ‘NS Lim’). The highest concentrations of the investigated metals were noted to suppress the development of the aboveground parts and roots. The smallest inhibiting effect was observed in the presence of Ni, which at lowest concentration produced a stimulating effect; Pb and Cd had a similar effect. The most pronounced inhibition was caused by Mo, which decreased the growth of the roots and aboveground parts by 50% and 35%, respectively. An increase in concentration of heavy metals in the medium resulted in their increased accumulation in both the plant roots and aboveground parts. The largest accumulation in the aboveground parts was observed for Ni and Mo, followed by Cd, and least for Pb. Nitrate and protein metabolism decreased according to the order of Cd > Pb > Ni > Mo. However, when expressed per amount of heavy metal accumulated in particular plant parts, toxicity was in the order of Pb > Cd > Ni > Mo.
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Claims 10
Claim · model-written summary
Highest metal concentrations suppressed pea shoot and root development.
- Taxon
- young pea plantst0
- Treatment
- highest concentrations of the investigated metalse0
- Outcome
- development of the aboveground parts and rootse0
- Direction
- suppresse0
Not reportedComparator
Verbatim
e0“The highest concentrations of the investigated metals were noted to suppress the development of the aboveground parts and roots.”
t0“YOUNG PEA PLANTS”
Claim · model-written summary
Nickel had the smallest growth inhibition among the metals.
Not reportedComparator
Verbatim
e0“The smallest inhibiting effect was observed in the presence of Ni, which at lowest concentration produced a stimulating effect; Pb and Cd had a similar effect.”
t0“YOUNG PEA PLANTS”
Claim · model-written summary
Nickel at the lowest concentration stimulated pea growth.
- Taxon
- young pea plantst0
- Treatment
- Nie0
- Outcome
- stimulating effecte0
- Direction
- stimulatinge0
- Qualifier
- lowest concentratione0
Not reportedComparator
Verbatim
e0“The smallest inhibiting effect was observed in the presence of Ni, which at lowest concentration produced a stimulating effect; Pb and Cd had a similar effect.”
t0“YOUNG PEA PLANTS”
Claim · model-written summary
Lead and cadmium had similar effects.
Verbatim
e0“Pb and Cd had a similar effect.”
t0“YOUNG PEA PLANTS”
Claim · model-written summary
Molybdenum reduced pea root growth by 50%.
- Taxon
- young pea plantst0
- Organ / stage
- rootse0
- Treatment
- Moe0
- Outcome
- growth of the rootse0
- Direction
- decreasede0
- Value
- 50%e0
Not reportedComparator
Verbatim
e0“The most pronounced inhibition was caused by Mo, which decreased the growth of the roots and aboveground parts by 50% and 35%, respectively.”
t0“YOUNG PEA PLANTS”
Claim · model-written summary
Molybdenum reduced aboveground growth by 35%.
- Taxon
- young pea plantst0
- Organ / stage
- aboveground partse0
- Treatment
- Moe0
- Outcome
- growth of the roots and aboveground partse0
- Direction
- decreasede0
- Value
- 35%e0
Not reportedComparator
Verbatim
e0“The most pronounced inhibition was caused by Mo, which decreased the growth of the roots and aboveground parts by 50% and 35%, respectively.”
t0“YOUNG PEA PLANTS”
Claim · model-written summary
Higher metal concentrations increased metal accumulation in roots and shoots.
Verbatim
e0“An increase in concentration of heavy metals in the medium resulted in their increased accumulation in both the plant roots and aboveground parts.”
t0“YOUNG PEA PLANTS”
Claim · model-written summary
Aboveground metal accumulation ranked highest for nickel and molybdenum, then cadmium, then lead.
Verbatim
e0“The largest accumulation in the aboveground parts was observed for Ni and Mo, followed by Cd, and least for Pb.”
t0“YOUNG PEA PLANTS”
Claim · model-written summary
Metal effects on nitrate and protein metabolism ranked Cd, Pb, Ni, then Mo.
Verbatim
e0“Nitrate and protein metabolism decreased according to the order of Cd > Pb > Ni > Mo.”
t0“YOUNG PEA PLANTS”
Claim · model-written summary
Toxicity per accumulated metal ranked Pb, Cd, Ni, then Mo.
- Taxon
- young pea plantst0
- Outcome
- toxicitye0
- Qualifier
- per amount of heavy metal accumulated in particular plant partse0
Not reportedDirection
Verbatim
e0“when expressed per amount of heavy metal accumulated in particular plant parts, toxicity was in the order of Pb > Cd > Ni > Mo.”
t0“YOUNG PEA PLANTS”
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See all 6 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.