Paper · 2004 · Journal of Environmental Science and Health Part B

Genotypic Differences in Effects of Cadmium Exposure on Plant Growth and Contents of Cadmium and Elements in 14 Cultivars of Bai Cai

Zhu-Jun Zhu; Guang-Wen Sun; Xue-Zhi Fang; et al.

10
claims
20
verbatim quotes
1
citations
2
research areas
—
Not open access

Abstract

Abstract Fourteen cultivars of bai cai (Brassica campestris L. ssp. chinensis var. communis) were grown in the nutrient solutions containing 0–0.5 μg mL−1 of cadmium (Cd) to investigate genotypic differences in the effects of Cd exposure on the plant growth and uptake and distribution of Cd in bai cai plants. The Cd exposure significantly reduced the dry and fresh weights of roots and shoots, the dry weight ratio of shoot/root (S/R), total biomass, and chlorophyll content (SPAD value). Cd concentrations in bai cai ranged from 13.3 to 74.9 μg g−1 DW in shoots and from 163.1 to 574.7 μg g−1 DW in roots under Cd exposure, respectively. The considerable genotypic differences of Cd concentrations and accumulations in both shoots and roots were observed among 14 bai cai cultivars. Moreover, Cd mainly accumulated in the roots. Cd also caused the changes of uptake and distribution of nutrients in bai cai and under the influence of cadmium, the concentration of potassium (K) decreased in shoot and increased in root. However, the concentrations of magnesium (Mg), phosphorus (P), manganese (Mn), boron (B), and iron (Fe) increased in shoots and decreased in roots. In addition, Cd exposure resulted in an increase in calcium (Ca), sulphur (S), and zinc (Zn) concentrations in both shoots and roots but had no significant effects on the whole uptake of the examined mineral nutrients except for S.

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Claims 10

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Cadmium significantly reduced bai cai root and shoot weights, shoot/root ratio, biomass and chlorophyll.

Treatment
Cd exposuree0
Outcome
dry and fresh weights of roots and shoots, the dry weight ratio of shoot/root (S/R), total biomass, and chlorophyll content (SPAD value)e0
Direction
reducede0

Not reportedComparator

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The Cd exposure significantly reduced the dry and fresh weights of roots and shoots, the dry weight ratio of shoot/root (S/R), total biomass, and chlorophyll content (SPAD value)”

✓ located verbatim in the source · abstract, characters 311–489 · show in text ↑
e1

“bai cai (Brassica campestris L. ssp. chinensis var. communis)”

✓ located verbatim in the source · abstract, characters 31–92 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Under cadmium exposure, shoot cadmium concentration ranged from 13.3 to 74.9 μg g−1 DW.

Organ / stage
shootse0
Outcome
Cd concentrationse0
Value
13.3 to 74.9 μg g−1 DWe0

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Cd concentrations in bai cai ranged from 13.3 to 74.9 μg g−1 DW in shoots”

✓ located verbatim in the source · abstract, characters 491–564 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Under cadmium exposure, root cadmium concentration ranged from 163.1 to 574.7 μg g−1 DW.

Organ / stage
rootse0
Outcome
Cd concentrationse1
Value
163.1 to 574.7 μg g−1 DWe0

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“from 163.1 to 574.7 μg g−1 DW in roots under Cd exposure”

✓ located verbatim in the source · abstract, characters 569–625 · show in text ↑
e1

“Cd concentrations in bai cai”

✓ located verbatim in the source · abstract, characters 491–519 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cadmium concentration and accumulation in roots and shoots differed considerably among 14 cultivars.

Outcome
genotypic differences of Cd concentrations and accumulationse0
Value
14e0

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The considerable genotypic differences of Cd concentrations and accumulations in both shoots and roots were observed among 14 bai cai cultivars”

✓ located verbatim in the source · abstract, characters 641–784 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cadmium accumulated mainly in roots.

Outcome
Cd mainly accumulated in the rootse0

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Cd mainly accumulated in the roots”

✓ located verbatim in the source · abstract, characters 796–830 · show in text ↑
e1

“bai cai plants”

✓ located verbatim in the source · abstract, characters 295–309 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

With cadmium, shoot potassium concentration decreased and root potassium increased.

Treatment
cadmiume0
Outcome
concentration of potassium (K)e0
Direction
decreased in shoot and increased in roote0

Not reportedComparator

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“under the influence of cadmium, the concentration of potassium (K) decreased in shoot and increased in root”

✓ located verbatim in the source · abstract, characters 914–1021 · show in text ↑
e1

“nutrients in bai cai and under the influence of cadmium”

✓ located verbatim in the source · abstract, characters 889–944 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

With cadmium, magnesium, phosphorus and manganese concentrations increased in shoots and decreased in roots.

Treatment
Cd exposuree1
Outcome
concentrations of magnesium (Mg), phosphorus (P), manganese (Mn)e0
Direction
increased in shoots and decreased in rootse0

Not reportedComparator

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“the concentrations of magnesium (Mg), phosphorus (P), manganese (Mn), boron (B), and iron (Fe) increased in shoots and decreased in roots”

✓ located verbatim in the source · abstract, characters 1032–1169 · show in text ↑
e1

“The Cd exposure significantly reduced”

✓ located verbatim in the source · abstract, characters 311–348 · show in text ↑
e2

“nutrients in bai cai and under the influence of cadmium”

✓ located verbatim in the source · abstract, characters 889–944 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

With cadmium, boron and iron concentrations increased in shoots and decreased in roots.

Treatment
Cd exposuree1
Outcome
boron (B), and iron (Fe)e0
Direction
increased in shoots and decreased in rootse0

Not reportedComparator

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“boron (B), and iron (Fe) increased in shoots and decreased in roots”

✓ located verbatim in the source · abstract, characters 1102–1169 · show in text ↑
e1

“The Cd exposure significantly reduced”

✓ located verbatim in the source · abstract, characters 311–348 · show in text ↑
e2

“nutrients in bai cai and under the influence of cadmium”

✓ located verbatim in the source · abstract, characters 889–944 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Cadmium increased calcium, sulphur and zinc concentrations in shoots and roots.

Treatment
Cd exposuree0
Outcome
calcium (Ca), sulphur (S), and zinc (Zn) concentrationse0
Direction
increasee0

Not reportedComparator

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Cd exposure resulted in an increase in calcium (Ca), sulphur (S), and zinc (Zn) concentrations in both shoots and roots”

✓ located verbatim in the source · abstract, characters 1184–1303 · show in text ↑
e1

“nutrients in bai cai and under the influence of cadmium”

✓ located verbatim in the source · abstract, characters 889–944 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Cadmium did not significantly affect total uptake of the examined minerals apart from sulphur.

Treatment
Cd exposuree0
Outcome
whole uptake of the examined mineral nutrientse0
Direction
no significant effectse0

Not reportedComparator

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

Brassica rapa subsp. pekinensis
Brassica rapa subsp. pekinensis · Taxondekochan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Cd exposure resulted in an increase in calcium (Ca), sulphur (S), and zinc (Zn) concentrations in both shoots and roots but had no significant effects on the whole uptake of the examined mineral nutrients except for S”

✓ located verbatim in the source · abstract, characters 1184–1401 · show in text ↑
e1

“nutrients in bai cai and under the influence of cadmium”

✓ located verbatim in the source · abstract, characters 889–944 · show in text ↑

cadmium atom · physiology: pigments · Brassica rapa (field mustard)Results differ

12 papers: 4 positive, 8 negative or no effect

7 papers in the same direction as this paper · 4 in the opposite direction

  1. positive
  2. positive
  3. positive

8 papers more in this group

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cadmium atom · nutrient: content · Brassica rapa (field mustard)Positive and negative results

9 papers: 5 positive, 4 negative or no effect

3 papers in the same direction as this paper · 5 in the opposite direction

  1. positive
  2. positive
  3. positive

5 papers more in this group

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heavy metal · nutrient: content · Brassica rapa (field mustard)Positive and negative results

4 papers: 1 positive, 3 negative or no effect

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

  1. positive
  2. negative
  3. negative
See all 4 papers →

heavy metal · physiology: pigments · Brassica rapa (field mustard)Results agree

7 papers: 0 positive, 7 negative or no effect

6 papers in the same direction as this paper

  1. negative
  2. negative
  3. negative

3 papers more in this group

See all 7 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.