Abstract
In order to use the Cd-contaminated saline soil, experiments have been carried out to analyze the differences among effects of three salts on cadmium accumulation capacities of Brassica Napus in Cd-contaminated soil, thus to figure out the phytoremediation effects of planting Brassica Napus in different types of Cd-contaminated saline soils. Brassica Napus(a cadmium hyperaccumulator plant) has been as the research plant, the Brassica Napus was planted in Cd-contaminated soils (Cd: 10 mg•kg-1) with different salt concentrations(0 g•kg -1 , 2g•kg -1 ,4 g•kg -1 and 6 g•kg -1 ) for 60 days as required by the greenhouse pot soil culture experiment, thus to study the bioconcentration factor(BCF) of Brassica Napus on Cd and the effects of Brassica Napus on the changes of concentrations in the shoots and roots. The three main salts in the soil, namely, sodium chloride, sodium sulfate and sodium carbonate, were chosen as the analysis and research objects. The results showed that the soil containing sodium carbonate inhibited the Brassica Napus from absorbing Cd in the soil, so did the soil containing sodium sulfate, however, the effect was not so obvious as that of the soil containing sodium carbonate. However, the soil containing sodium chloride had little impact on Cd absorption of the Brassica Napus that it could only slightly promote the cadmium accumulation capacities of Brassica Napus under a very high concentration, In different types of saline soils, there were significant differences among the effects of different salts on cadmium accumulation capacities of Brassica Napus, the sodium chloride in the soil had little impact on cadmium accumulation capacities of the roots of Brassica Napus, however, it could enhance the cadmium accumulation capacities of the shoots of Brassica Napus; the sodium carbonate in the soil could significantly inhibit the shoots and roots of Brassica Napus from accumulating the cadmium, therefore, it was not conducive for the Brassica Napus to accumulate cadmium.
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Claims 7
Claim · model-written summary
Sodium carbonate in the soil inhibited Brassica napus absorption of Cd.
- Taxon
- Brassica Napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse1 - Treatment
- the soil containing sodium carbonatee1
- Outcome
- absorbing Cde1
- Direction
- inhibitede1
- Setting
- greenhouse pot soil culture experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“greenhouse pot soil culture experiment”
e1“the soil containing sodium carbonate inhibited the Brassica Napus from absorbing Cd in the soil, so did the soil containing sodium sulfate”
Claim · model-written summary
Sodium sulfate in the soil also inhibited Brassica napus absorption of Cd, less obviously than sodium carbonate.
- Taxon
- Brassica NapusBrassica napuse1
- Treatment
- the soil containing sodium sulfatee1
- Outcome
- absorbing Cde1
- Direction
- inhibitede1
- Qualifier
- the effect was not so obvious as that of the soil containing sodium carbonatee2
- Setting
- greenhouse pot soil culture experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greenhouse pot soil culture experiment”
e1“the soil containing sodium carbonate inhibited the Brassica Napus from absorbing Cd in the soil, so did the soil containing sodium sulfate”
e2“the effect was not so obvious as that of the soil containing sodium carbonate”
Claim · model-written summary
Sodium chloride in the soil had little impact on Cd accumulation in the roots of Brassica napus.
- Taxon
- Brassica NapusBrassica napuse3
- Organ / stage
- rootse3
- Treatment
- the sodium chloride in the soile3
- Outcome
- cadmium accumulation capacitiese3
- Direction
- had little impacte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“the sodium chloride in the soil had little impact on cadmium accumulation capacities of the roots of Brassica Napus”
Claim · model-written summary
Sodium chloride in the soil enhanced Cd accumulation in the shoots of Brassica napus.
- Taxon
- Brassica NapusBrassica napuse4
- Organ / stage
- shootse4
- Treatment
- the sodium chloride in the soile3
- Outcome
- cadmium accumulation capacitiese4
- Direction
- enhancee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“the sodium chloride in the soil had little impact on cadmium accumulation capacities of the roots of Brassica Napus”
e4“it could enhance the cadmium accumulation capacities of the shoots of Brassica Napus”
Claim · model-written summary
Sodium chloride slightly promoted Cd accumulation by Brassica napus only at a very high salt concentration.
- Taxon
- Brassica NapusBrassica napuse5
- Treatment
- the soil containing sodium chloridee5
- Outcome
- cadmium accumulation capacitiese5
- Direction
- slightly promotee5
- Qualifier
- under a very high concentratione5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the soil containing sodium chloride had little impact on Cd absorption of the Brassica Napus that it could only slightly promote the cadmium accumulation capacities of Brassica Napus under a very high concentration”
Claim · model-written summary
Sodium carbonate in the soil significantly inhibited Cd accumulation in the shoots and roots of Brassica napus.
- Taxon
- Brassica NapusBrassica napuse7
- Organ / stage
- shoots and rootse7
- Treatment
- the sodium carbonate in the soile7
- Outcome
- accumulating the cadmiume7
- Direction
- inhibite7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“the sodium carbonate in the soil could significantly inhibit the shoots and roots of Brassica Napus from accumulating the cadmium”
Claim · model-written summary
The effects of the three salts on Cd accumulation by Brassica napus differed significantly, with direction not stated.
- Taxon
- Brassica NapusBrassica napuse6
- Treatment
- different saltse6
- Outcome
- cadmium accumulation capacitiese6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“there were significant differences among the effects of different salts on cadmium accumulation capacities of Brassica Napus”
The same questions in other papers
sodium sulfate · nutrient: content · Brassica napus (oilseed rape)Positive and negative results
1 in the opposite direction
- positive
sodium chloride · molecular: metabolites · Brassica napus (oilseed rape)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
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.