Paper · 2011 · African Journal of Plant Science

Effect of heavy metal pollutants on sunflower

Rajeev Gopal; Neena Khurana

4
claims
8
verbatim quotes
25
citations
1
research areas
✓
Open access

Abstract

The aim of this present study was to assess the tolerance of pollutant elements (Co, Ni, Cd, Cr and Pb) on visible foliar symptoms, tissue concentration and some biochemical parameters in sunflower plants grown at 0.25 mM in soil pot culture. At equimolar concentrations (0.25 mM), Cd induced the most severe visual toxicity effects and exhibited maximum oxidative damage as observed by accumulation of ThioBarbituric Acid Reactive Substances (TBARS) and lower antioxidant capacity than the plants is exposed to Co, Cd, Cr and Pb. The study suggests that the degree of oxidative damage assessed by the manifestation of external visual toxicity effects, tissue concentration and alteration in biochemical parameters were found to be in the order Cd>Cr>Ni>Co>Pb. Key words: Sunflower, visible symptoms, TBARS, antioxidant, tissue concentration.

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Claims 4

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 0.25 mM, Cd caused the most severe visible toxicity in sunflower.

Taxon
sunflowerHelianthus annuust0
Treatment
Cde0
Outcome
visual toxicity effectse0
Direction
most severee0
Value
0.25 mMe0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“At equimolar concentrations (0.25 mM), Cd induced the most severe visual toxicity effects”

✓ located verbatim in the source · abstract, characters 243–332 · show in text ↑
t0

“Effect of heavy metal pollutants on sunflower”

✓ located verbatim in the source · title, characters 0–45 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cd caused maximum oxidative damage indicated by TBARS accumulation.

Taxon
sunflowerHelianthus annuust0
Treatment
Cde0
Outcome
oxidative damagee0
Direction
maximume0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Cd induced the most severe visual toxicity effects and exhibited maximum oxidative damage as observed by accumulation of ThioBarbituric Acid Reactive Substances (TBARS)”

✓ located verbatim in the source · abstract, characters 282–450 · show in text ↑
t0

“Effect of heavy metal pollutants on sunflower”

✓ located verbatim in the source · title, characters 0–45 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cd-exposed plants had lower antioxidant capacity than other metal-exposed plants.

Taxon
sunflowerHelianthus annuust0
Treatment
Cde0
Outcome
antioxidant capacitye0
Direction
lowere0
Comparator
plants is exposed to Co, Cd, Cr and Pbe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“lower antioxidant capacity than the plants is exposed to Co, Cd, Cr and Pb.”

✓ located verbatim in the source · abstract, characters 455–530 · show in text ↑
t0

“Effect of heavy metal pollutants on sunflower”

✓ located verbatim in the source · title, characters 0–45 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Overall oxidative damage ranked Cd>Cr>Ni>Co>Pb.

Taxon
sunflowerHelianthus annuust0
Outcome
degree of oxidative damagee0
Value
Cd>Cr>Ni>Co>Pbe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“degree of oxidative damage assessed by the manifestation of external visual toxicity effects, tissue concentration and alteration in biochemical parameters were found to be in the order Cd>Cr>Ni>Co>Pb.”

✓ located verbatim in the source · abstract, characters 559–760 · show in text ↑
t0

“Effect of heavy metal pollutants on sunflower”

✓ located verbatim in the source · title, characters 0–45 · show in text ↑

cadmium atom · physiology: oxidative · Helianthus annuus (common sunflower)Results differ

11 papers: 1 positive, 10 negative or no effect

9 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. negative
  3. negative

7 papers more in this group

See all 11 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.