Abstract
Selenium in soils can result in increased uptake of S and a reduction in glucosinolates in Brassica species. Rapid cycling B. oleracea plants were grown hydroponically in nutrient solution with Se treatments delivered as sodium selenate in concentrations of 0.0, 0.5, 0.75, 1.0 and 1.5 ppm. Elevated S treatments of 37 ppm sulfate and 37 ppm sulfate/ 0.75 ppm selenate were incorporated to compare with Se treatments. Se concentration in the nutrient solution was positively correlated with Se and S uptake in the plants. The S concentration of plants exposed to Se was equal to or greater than the S concentration of plants exposed to elevated S in the nutrient solution. In spite of higher S concentrations, there was a decrease in production of 5 of the 7 glucosinolates analyzed in Se enriched plants. Plants in elevated S treatments had higher glucosinolate production than Se treated plants. These results suggest that Se either up-regulates or prevents the down-regulation of S uptake in B. oleracea. In addition, Se's presence within the plant seems to have a negative impact on the production of certain glucosinolates despite adequate availability of S.
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Claims 5
Claim · model-written summary
Selenium concentration in the nutrient solution was positively correlated with Se and S uptake in B. oleracea.
- Taxon
- B. oleracea
Brassica oleraceae0 - Treatment
- sodium selenatee0
- Outcome
- Se and S uptakee1
- Direction
- positively correlatede1
- Setting
- hydroponically in nutrient solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rapid cycling B. oleracea plants were grown hydroponically in nutrient solution with Se treatments delivered as sodium selenate in concentrations of 0.0, 0.5, 0.75, 1.0 and 1.5 ppm”
e1“Se concentration in the nutrient solution was positively correlated with Se and S uptake in the plants”
Claim · model-written summary
Plants exposed to Se had S concentration equal to or greater than plants exposed to elevated S in the nutrient solution.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- sodium selenatee0
- Outcome
- S concentratione2
- Direction
- equal to or greater thane2
- Comparator
- elevated Se2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rapid cycling B. oleracea plants were grown hydroponically in nutrient solution with Se treatments delivered as sodium selenate in concentrations of 0.0, 0.5, 0.75, 1.0 and 1.5 ppm”
e2“The S concentration of plants exposed to Se was equal to or greater than the S concentration of plants exposed to elevated S in the nutrient solution”
Claim · model-written summary
Selenium enrichment decreased production of 5 of the 7 glucosinolates analyzed in B. oleracea despite higher S concentrations.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- Se enriched plantse3
- Outcome
- production of 5 of the 7 glucosinolatese3
- Direction
- decreasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rapid cycling B. oleracea plants were grown hydroponically in nutrient solution with Se treatments delivered as sodium selenate in concentrations of 0.0, 0.5, 0.75, 1.0 and 1.5 ppm”
e3“In spite of higher S concentrations, there was a decrease in production of 5 of the 7 glucosinolates analyzed in Se enriched plants”
Claim · model-written summary
Plants in elevated S treatments had higher glucosinolate production than Se-treated plants.
- Taxon
- B. oleraceaBrassica oleraceae0
- Treatment
- elevated S treatmentse4
- Outcome
- glucosinolate productione4
- Direction
- highere4
- Comparator
- Se treated plantse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rapid cycling B. oleracea plants were grown hydroponically in nutrient solution with Se treatments delivered as sodium selenate in concentrations of 0.0, 0.5, 0.75, 1.0 and 1.5 ppm”
e4“Plants in elevated S treatments had higher glucosinolate production than Se treated plants”
Claim · model-written summary
Selenium may up-regulate or prevent the down-regulation of S uptake in B. oleracea.
- Taxon
- B. oleraceaBrassica oleraceae5
- Treatment
- See5
- Outcome
- S uptakee5
- Qualifier
- up-regulates or prevents the down-regulatione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rapid cycling B. oleracea plants were grown hydroponically in nutrient solution with Se treatments delivered as sodium selenate in concentrations of 0.0, 0.5, 0.75, 1.0 and 1.5 ppm”
e5“These results suggest that Se either up-regulates or prevents the down-regulation of S uptake in B. oleracea”
The same questions in other papers
selenium atom · quality: phytochemicals · Brassica oleracea (wild cabbage)Results differ
2 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 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.