Paper · 2012 · Acta Agronomica Hungarica

Influence of zinc supply on the phytotoxicity of cadmium in maize (Zea mays L.) grown on cadmium-contaminated soil

M. Khurana; B. Kansal

7
claims
14
verbatim quotes
5
citations
1
research areas
—
Not open access

Abstract

Zinc and cadmium have been found to interact with each other differently under different conditions. The zinc supply may enhance or offset the phytotoxicity of Cd. Therefore, in a pot experiment, a sandy loam soil (Typic Ustipsamments) was treated with cadmium at rates of 0, 10, 20 and 40 mg kg −1 and with zinc at rates of 0 and 20 mg kg −1 soil to assess their effect on dry matter yield and the concentrations of Cd and micronutrients. There was a significant decrease in dry matter yield due to the phytotoxic effect of Cd. The dry matter yield was not affected by the application of zinc at any rate of Cd application. The concentration and uptake of Cd in the crop increased gradually at increasing rates of cadmium application. The increase in cadmium concentration was greater in the presence of zinc than in its absence. This suggests that the effect of soilapplied Zn is reflected in the enhancement of the Cd content in plants. Thus, zinc application cannot offset the toxic effect of Cd. The relationship of Cd with Zn and Fe was synergistic at all rates of Cd application, whereas Mn and Cu exhibited an antagonistic relationship.

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Claims 7

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Cadmium application significantly decreased maize dry matter yield through its phytotoxic effect.

Taxon
maizeZea mayst0
Treatment
Cde0
Outcome
dry matter yielde0
Direction
decreasee0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 60–65 · show in text ↑
e0

“There was a significant decrease in dry matter yield due to the phytotoxic effect of Cd”

✓ located verbatim in the source · abstract, characters 440–527 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Zinc application did not affect maize dry matter yield at any rate of Cd application.

Taxon
maizeZea mayst0
Treatment
application of zince0
Outcome
dry matter yielde0
Direction
not affectede0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 60–65 · show in text ↑
e0

“The dry matter yield was not affected by the application of zinc at any rate of Cd application”

✓ located verbatim in the source · abstract, characters 529–623 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Cd concentration and uptake in maize increased gradually with increasing rates of cadmium application.

Taxon
maizeZea mayst0
Treatment
increasing rates of cadmium applicatione0
Outcome
concentration and uptake of Cde0
Direction
increasede0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 60–65 · show in text ↑
e0

“The concentration and uptake of Cd in the crop increased gradually at increasing rates of cadmium application”

✓ located verbatim in the source · abstract, characters 625–734 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The increase in cadmium concentration in maize was greater in the presence of zinc than in its absence.

Taxon
maizeZea mayst0
Treatment
presence of zince0
Outcome
increase in cadmium concentratione0
Direction
greatere0
Comparator
its absencee0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 60–65 · show in text ↑
e0

“The increase in cadmium concentration was greater in the presence of zinc than in its absence”

✓ located verbatim in the source · abstract, characters 736–829 · show in text ↑
Intervention effectauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The authors conclude that zinc application cannot offset the toxic effect of Cd.

Taxon
maizeZea mayst0
Treatment
zinc applicatione0
Outcome
toxic effect of Cde0
Direction
cannot offsete0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 60–65 · show in text ↑
e0

“zinc application cannot offset the toxic effect of Cd”

✓ located verbatim in the source · abstract, characters 946–999 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

The relationship of Cd with Zn and Fe was synergistic at all rates of Cd application.

Taxon
maizeZea mayst0
Compound
Zn and Fee0
Outcome
relationshipe0
Direction
synergistice0
Qualifier
at all rates of Cd applicatione0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 60–65 · show in text ↑
e0

“The relationship of Cd with Zn and Fe was synergistic at all rates of Cd application”

✓ located verbatim in the source · abstract, characters 1001–1085 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Mn and Cu exhibited an antagonistic relationship with Cd.

Taxon
maizeZea mayst0
Compound
Mn and Cue0
Outcome
relationshipe0
Direction
antagonistice0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 60–65 · show in text ↑
e0

“Mn and Cu exhibited an antagonistic relationship”

✓ located verbatim in the source · abstract, characters 1095–1143 · show in text ↑

zinc atom · yield · Zea mays (maize)Results differ

441 papers: 391 positive, 50 negative or no effect

49 papers in the same direction as this paper · 391 in the opposite direction

  1. no effect
  2. positive
  3. positive

437 papers more in this group

See all 441 papers →

zinc atom · pest · Zea mays (maize)Positive and negative results

9 papers: 7 positive, 2 negative or no effect

1 paper in the same direction as this paper · 7 in the opposite direction

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

cadmium atom · yield · Zea mays (maize)Results agree

17 papers: 0 positive, 17 negative or no effect

16 papers in the same direction as this paper

  1. negative
  2. negative
  3. negative

13 papers more in this group

See all 17 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.