Abstract
Corn shoot mitochondria possess an energy-linked transport system for sulfate uptake as demonstrated by osmotic swelling and [(35)S]SO(4) (2-) accumulation. Maximum uptake is secured in the presence of Mg(2+) and oligomycin with sucrose for osmotic support. Neither phosphate nor dicarboxylate anions are required. When added simultaneously, millimolar concentrations of phosphate block [(35)S]SO(4) (2-) uptake after the initial minute. Mersalyl, N-ethylmaleimide, and 2,4-dinitrophenol are strong inhibitors of sulfate uptake; n-butylmalonate is a weak inhibitor. These inhibitors act in the same fashion on phosphate uptake. It is concluded that sulfate uptake in the absence of phosphate is by the phosphate transporter.
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Claims 10
Claim · model-written summary
Corn shoot mitochondria possess energy-linked sulfate uptake.
- Taxon
- Corn
Zea mays subsp. mayse0 - Organ / stage
- shoot mitochondriae0
- Outcome
- energy-linked transport system for sulfate uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn shoot mitochondria possess an energy-linked transport system for sulfate uptake”
Claim · model-written summary
Mg(2+) and oligomycin with sucrose secured maximum uptake.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Mg(2+) and oligomycin with sucrosee0
- Outcome
- uptakee0
- Direction
- Maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum uptake is secured in the presence of Mg(2+) and oligomycin with sucrose for osmotic support.”
t0“Corn”
Claim · model-written summary
Phosphate was not required for sulfate uptake.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- phosphate nor dicarboxylate anions are requirede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither phosphate nor dicarboxylate anions are required.”
t0“Corn”
Claim · model-written summary
Millimolar phosphate blocked sulfate uptake after the first minute.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- millimolar concentrations of phosphatee0
- Outcome
- [(35)S]SO(4) (2-) uptakee0
- Direction
- blocke0
- Qualifier
- after the initial minutee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“millimolar concentrations of phosphate block [(35)S]SO(4) (2-) uptake after the initial minute”
t0“Corn”
Claim · model-written summary
Mersalyl strongly inhibited sulfate uptake.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Mersalyle0
- Outcome
- sulfate uptakee0
- Direction
- strong inhibitorse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mersalyl, N-ethylmaleimide, and 2,4-dinitrophenol are strong inhibitors of sulfate uptake”
t0“Corn”
Claim · model-written summary
N-ethylmaleimide strongly inhibited sulfate uptake.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- N-ethylmaleimidee0
- Outcome
- sulfate uptakee0
- Direction
- strong inhibitorse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mersalyl, N-ethylmaleimide, and 2,4-dinitrophenol are strong inhibitors of sulfate uptake”
t0“Corn”
Claim · model-written summary
2,4-dinitrophenol strongly inhibited sulfate uptake.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- 2,4-dinitrophenole0
- Outcome
- sulfate uptakee0
- Direction
- strong inhibitorse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mersalyl, N-ethylmaleimide, and 2,4-dinitrophenol are strong inhibitors of sulfate uptake”
t0“Corn”
Claim · model-written summary
n-butylmalonate weakly inhibited sulfate uptake.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- n-butylmalonatee0
- Outcome
- sulfate uptakee0
- Direction
- weak inhibitore0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mersalyl, N-ethylmaleimide, and 2,4-dinitrophenol are strong inhibitors of sulfate uptake; n-butylmalonate is a weak inhibitor”
t0“Corn”
Claim · model-written summary
The inhibitors acted similarly on phosphate uptake.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- phosphate uptakee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These inhibitors act in the same fashion on phosphate uptake.”
t0“Corn”
Claim · model-written summary
The authors concluded sulfate uptake without phosphate uses the phosphate transporter.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- sulfate uptakee0
- Qualifier
- by the phosphate transportere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is concluded that sulfate uptake in the absence of phosphate is by the phosphate transporter.”
t0“Corn”
The same questions in other papers
magnesium(2+) · nutrient: content · Zea mays (maize)Positive and negative results
1 in the opposite direction
- negative
sucrose · nutrient: content · Zea mays (maize)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- no effect
2 papers more in this group
See all 6 papers →oligomycin · nutrient: content · Zea mays (maize)Positive and negative results
6 in the opposite direction
- negative
- no effect
- negative
3 papers more in this group
See all 7 papers →N-ethylmaleimide · nutrient: content · Zea mays (maize)Results agree
3 papers in the same direction as this paper
- negative
- no effect
- negative
phosphorus · nutrient: content · Zea mays (maize)Positive and negative results
53 papers in the same direction as this paper · 190 in the opposite direction
- positive
- positive
- positive
240 papers more in this group
See all 244 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.