Abstract
Fourteen cultivars of bai cai (Brassica campestris L. ssp. chinensis var. communis) were grown in the nutrient solutions containing 0-0.5 microg 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 microg g(-1) DW in shoots and from 163.1 to 574.7 microg 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 13
Claim · model-written summary
Cadmium exposure significantly reduced root and shoot dry and fresh weights, shoot/root dry weight ratio, and total biomass.
- Taxon
- bai cai
Brassica rapa subsp. pekinensist0 - Treatment
- Cd exposuree0
- Outcome
- dry and fresh weights of roots and shoots, the dry weight ratio of shoot/root (S/R), total biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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).”
t0“Bai Cai”
Claim · model-written summary
Cadmium exposure significantly reduced chlorophyll content.
- Taxon
- bai caiBrassica rapa subsp. pekinensist0
- Treatment
- Cd exposuree0
- Outcome
- chlorophyll content (SPAD value)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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).”
t0“Bai Cai”
Claim · model-written summary
Shoot cadmium concentration under exposure ranged from 13.3 to 74.9 microg g(-1) DW.
- Taxon
- bai caiBrassica rapa subsp. pekinensise0
- Organ / stage
- shootse0
- Treatment
- Cd exposuree0
- Outcome
- Cd concentrations in bai caie0
- Value
- 13.3 to 74.9 microg g(-1) DWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd concentrations in bai cai ranged from 13.3 to 74.9 microg g(-1) DW in shoots and from 163.1 to 574.7 microg g(-1) DW in roots under Cd exposure, respectively.”
Claim · model-written summary
Root cadmium concentration under exposure ranged from 163.1 to 574.7 microg g(-1) DW.
- Taxon
- bai caiBrassica rapa subsp. pekinensise0
- Organ / stage
- rootse0
- Treatment
- Cd exposuree0
- Outcome
- Cd concentrations in bai caie0
- Value
- 163.1 to 574.7 microg g(-1) DWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd concentrations in bai cai ranged from 13.3 to 74.9 microg g(-1) DW in shoots and from 163.1 to 574.7 microg g(-1) DW in roots under Cd exposure, respectively.”
Claim · model-written summary
Cadmium concentrations and accumulations in shoots and roots differed considerably among 14 cultivars.
- Taxon
- bai caiBrassica rapa subsp. pekinensise0
- Material
- 14 bai cai cultivarse0
- Outcome
- genotypic differences of Cd concentrations and accumulationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The considerable genotypic differences of Cd concentrations and accumulations in both shoots and roots were observed among 14 bai cai cultivars.”
Claim · model-written summary
Cadmium accumulated mainly in roots.
- Taxon
- bai caiBrassica rapa subsp. pekinensist0
- Organ / stage
- rootse0
- Outcome
- Cd mainly accumulated in the rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moreover, Cd mainly accumulated in the roots.”
t0“Bai Cai”
Claim · model-written summary
Cadmium changed nutrient uptake and distribution.
- Taxon
- bai caiBrassica rapa subsp. pekinensise0
- Treatment
- Cde0
- Outcome
- uptake and distribution of nutrientse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd also caused the changes of uptake and distribution of nutrients in bai cai”
Claim · model-written summary
Under cadmium, shoot potassium concentration decreased.
- Taxon
- bai caiBrassica rapa subsp. pekinensist0
- Organ / stage
- shoote0
- Treatment
- cadmiume0
- Outcome
- concentration of potassium (K)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under the influence of cadmium, the concentration of potassium (K) decreased in shoot and increased in root.”
t0“Bai Cai”
Claim · model-written summary
Under cadmium, root potassium concentration increased.
- Taxon
- bai caiBrassica rapa subsp. pekinensist0
- Organ / stage
- roote0
- Treatment
- cadmiume0
- Outcome
- concentration of potassium (K)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under the influence of cadmium, the concentration of potassium (K) decreased in shoot and increased in root.”
t0“Bai Cai”
Claim · model-written summary
Magnesium, phosphorus and manganese concentrations increased in shoots and decreased in roots under cadmium.
- Taxon
- bai caiBrassica rapa subsp. pekinensist0
- Outcome
- concentrations of magnesium (Mg), phosphorus (P), manganese (Mn)e0
- Direction
- increased in shoots and decreased in rootse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, the concentrations of magnesium (Mg), phosphorus (P), manganese (Mn), boron (B), and iron (Fe) increased in shoots and decreased in roots.”
t0“Bai Cai”
Claim · model-written summary
Boron and iron concentrations increased in shoots and decreased in roots under cadmium.
- Taxon
- bai caiBrassica rapa subsp. pekinensist0
- Outcome
- boron (B), and iron (Fe)e0
- Direction
- increased in shoots and decreased in rootse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, the concentrations of magnesium (Mg), phosphorus (P), manganese (Mn), boron (B), and iron (Fe) increased in shoots and decreased in roots.”
t0“Bai Cai”
Claim · model-written summary
Cadmium increased calcium, sulphur and zinc concentrations in shoots and roots.
- Taxon
- bai caiBrassica rapa subsp. pekinensist0
- 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.
Verbatim
e0“Cd exposure resulted in an increase in calcium (Ca), sulphur (S), and zinc (Zn) concentrations in both shoots and roots”
t0“Bai Cai”
Claim · model-written summary
Cadmium had no significant effect on whole uptake of examined mineral nutrients except sulphur.
- Taxon
- bai caiBrassica rapa subsp. pekinensist0
- Outcome
- whole uptake of the examined mineral nutrientse0
- Direction
- no significant effectse0
- Qualifier
- except for Se0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had no significant effects on the whole uptake of the examined mineral nutrients except for S.”
t0“Bai Cai”
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