Abstract
Nitrite reduction in either whole, isolated spinach chloroplasts (Spinacia oleracea L.) or in reconstituted spinach chloroplasts is stimulated by a short period of photosynthetic CO(2) fixation in the light prior to nitrite addition. With reconstituted chloroplasts, a similar stimulation can be obtained in nitrite reduction without CO(2) fixation by the addition of dihydroxyacetone phosphate or fructose 6-phosphate. Specific intermediate metabolites of the photosynthetic carbon reduction cycle may have a regulatory role in nitrite reduction in chloroplasts in the light.
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Claims 4
Claim · model-written summary
Prior photosynthetic CO(2) fixation stimulates nitrite reduction in whole and reconstituted spinach chloroplasts.
- Taxon
- spinach
Spinacia oleraceae0 - Organ / stage
- chloroplastse0
- Treatment
- a short period of photosynthetic CO(2) fixation in the light prior to nitrite additione0
- Outcome
- Nitrite reductione0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrite reduction in either whole, isolated spinach chloroplasts (Spinacia oleracea L.) or in reconstituted spinach chloroplasts is stimulated by a short period of photosynthetic CO(2) fixation in the light prior to nitrite addition”
Claim · model-written summary
Dihydroxyacetone phosphate stimulates nitrite reduction in reconstituted chloroplasts without CO(2) fixation.
- Taxon
- spinachSpinacia oleraceat0
- Organ / stage
- reconstituted chloroplastse0
- Treatment
- addition of dihydroxyacetone phosphatee0
- Outcome
- nitrite reductione0
- Direction
- stimulatione0
- Comparator
- without CO(2) fixatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With reconstituted chloroplasts, a similar stimulation can be obtained in nitrite reduction without CO(2) fixation by the addition of dihydroxyacetone phosphate or fructose 6-phosphate”
t0“Spinach”
Claim · model-written summary
Fructose 6-phosphate stimulates nitrite reduction in reconstituted chloroplasts without CO(2) fixation.
- Taxon
- spinachSpinacia oleraceat0
- Organ / stage
- reconstituted chloroplastse0
- Treatment
- fructose 6-phosphatee0
- Outcome
- nitrite reductione0
- Direction
- stimulatione0
- Comparator
- without CO(2) fixatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With reconstituted chloroplasts, a similar stimulation can be obtained in nitrite reduction without CO(2) fixation by the addition of dihydroxyacetone phosphate or fructose 6-phosphate”
t0“Spinach”
Claim · model-written summary
Photosynthetic carbon reduction intermediates may regulate chloroplast nitrite reduction in light.
- Taxon
- spinachSpinacia oleraceat0
- Compound
- intermediate metabolites of the photosynthetic carbon reduction cyclee0
- Outcome
- nitrite reductione0
- Qualifier
- may have a regulatory rolee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Specific intermediate metabolites of the photosynthetic carbon reduction cycle may have a regulatory role in nitrite reduction in chloroplasts in the light”
t0“Spinach”
The same questions in other papers
nitrite · molecular: metabolites · Spinacia oleracea (spinach)Positive and negative results
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- no effect
co2 · molecular: metabolites · Spinacia oleracea (spinach)Positive and negative results
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See all 6 papers →light · molecular: metabolites · Spinacia oleracea (spinach)Positive and negative results
15 papers in the same direction as this paper · 13 in the opposite direction
- negative
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See all 29 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.