Abstract
Lead (Pb) is one of the non essential and toxic heavy metals which can cause oxidative stress in plants. The effects of Pb(NO3)2 toxicity on growth and some biochemical parameters of record cultivars of Helianthus annuus L. were studied under hydroponic condition. Different treatments of Pb(NO3)2 (control (0), 200, 400, 600 and 800 :M) were used in order to consider changes in dry weight, proline and Pb accumulation in roots and shoots; Total chlorophyll, enzyme activity (catalase and peroxidase) and K + , Ca 2+ amounts of leaves. Compared with the control, Pb treatment caused a significant decrease in roots and shoots dry weight, leaves chlorophyll, catalase activity and K + , Ca 2+ amounts. In contrast, a significant increase in proline and Pb
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Claims 3
Claim · model-written summary
Lead reduced root and shoot dry weight.
- Taxon
- Helianthus annuus L.
Helianthus annuust0 - Treatment
- Pb treatmente0
- Outcome
- roots and shoots dry weighte0
- Direction
- decreasee0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control, Pb treatment caused a significant decrease in roots and shoots dry weight”
t0“Helianthus annuus L.”
Claim · model-written summary
Lead reduced leaf chlorophyll, catalase activity, potassium and calcium.
- Taxon
- Helianthus annuus L.Helianthus annuust0
- Treatment
- Pb treatmentt1
- Outcome
- leaves chlorophyll, catalase activity and K + , Ca 2+ amountse0
- Direction
- decreaset1
- Comparator
- the controlt1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaves chlorophyll, catalase activity and K + , Ca 2+ amounts”
t0“Helianthus annuus L.”
t1“Compared with the control, Pb treatment caused a significant decrease in roots and shoots dry weight”
Claim · model-written summary
Lead increased proline and Pb, though the supplied sentence is truncated.
- Taxon
- Helianthus annuus L.Helianthus annuust0
- Treatment
- Pb treatmentt1
- Outcome
- proline and Pbe0
- Direction
- increasee0
- Comparator
- the controlt1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, a significant increase in proline and Pb”
t0“Helianthus annuus L.”
t1“Compared with the control, Pb treatment caused a significant decrease in roots and shoots dry weight”
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See all 14 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.