Abstract
To evaluate the effects of exogenous selenium on cadmium tolerance and accumulation in two varieties of cucumber, pot experiments with cadmium at 10 mg/kg soil were conducted. Plant biomass, cadmium bioaccumulation, cadmium speciation, and antioxidative enzyme activity, including superoxide dismutase, catalase, peroxidase, and ascorbate peroxidase were determined. Exogenous selenium (1 mg/L for S1 and 2 mg/L for S2) was sprayed on the leaves on cucumbers, which significantly increased the biomasses of the roots, stems, leaves, and fruits in both cucumber varieties. The cadmium bioaccumulation in the cucumbers decreased with the increase of selenium. The contents of pectate/protein-bound cadmium increased and the cadmium − organic acid complexes and inorganic cadmium tended to decrease with the selenium addition. Supplementation with selenium improved the activities of superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase in the two cucumber varieties.
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Claims 7
Claim · model-written summary
Foliar exogenous selenium significantly increased root, stem and leaf biomass of both cucumber varieties under cadmium.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- Exogenous seleniume0
- Outcome
- biomasses of the roots, stems, leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Exogenous selenium (1 mg/L for S1 and 2 mg/L for S2) was sprayed on the leaves on cucumbers, which significantly increased the biomasses of the roots, stems, leaves, and fruits in both cucumber varieties”
Claim · model-written summary
Foliar exogenous selenium significantly increased fruit biomass of both cucumber varieties under cadmium.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Exogenous seleniume0
- Outcome
- fruitse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Exogenous selenium (1 mg/L for S1 and 2 mg/L for S2) was sprayed on the leaves on cucumbers, which significantly increased the biomasses of the roots, stems, leaves, and fruits in both cucumber varieties”
Claim · model-written summary
Cadmium bioaccumulation in the cucumbers decreased with increasing selenium.
- Taxon
- cucumberCucumis sativust0
- Treatment
- seleniume0
- Outcome
- cadmium bioaccumulatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“The cadmium bioaccumulation in the cucumbers decreased with the increase of selenium”
Claim · model-written summary
Selenium addition increased the contents of pectate/protein-bound cadmium.
- Taxon
- cucumberCucumis sativust0
- Outcome
- pectate/protein-bound cadmiume0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“The contents of pectate/protein-bound cadmium increased”
Claim · model-written summary
Selenium addition tended to decrease cadmium-organic acid complexes and inorganic cadmium.
- Taxon
- cucumberCucumis sativust0
- Treatment
- selenium additione0
- Outcome
- cadmium − organic acid complexes and inorganic cadmiume0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“the cadmium − organic acid complexes and inorganic cadmium tended to decrease with the selenium addition”
Claim · model-written summary
Selenium supplementation improved superoxide dismutase, peroxidase and catalase activities in the two cucumber varieties.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Supplementation with seleniume0
- Outcome
- superoxide dismutase, peroxidase, catalasee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Supplementation with selenium improved the activities of superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase in the two cucumber varieties”
Claim · model-written summary
Selenium supplementation improved ascorbate peroxidase activity in the two cucumber varieties.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Supplementation with seleniume0
- Outcome
- ascorbate peroxidasee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Supplementation with selenium improved the activities of superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase in the two cucumber varieties”
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See all 6 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.