Abstract
Root carbohydrate status of 7d old corn seedlings was altered by seed excision, extended light, extended darkness and removal of the seed piece, while extended light slightly increased the induced rate of uptake. Neither of these treatments had any effect on the constitutive uptake of nitrate. Glucose added to the uptake medium, however, led to a tripling of constitutive uptake and masked any effect of inducing the uptake system. In addition to the results of carbohydrate analysis, and net uptake over the course of induction, results will be presented of short-term {sup 15}N experiments, in which the relative contribution of distinct root regions to the constitutive and induced uptake will be evaluated.
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Claims 4
Claim · model-written summary
Extended light slightly increased the induced rate of nitrate uptake in corn seedlings.
- Taxon
- corn seedlings
Zea mays subsp. mayse1 - Treatment
- extended lighte0
- Outcome
- induced rate of uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“extended light slightly increased the induced rate of uptake”
e1“7d old corn seedlings”
Claim · model-written summary
The carbohydrate status manipulations had no effect on constitutive nitrate uptake in corn seedlings.
- Taxon
- corn seedlingsZea mays subsp. mayse0
- Treatment
- seed excision, extended light, extended darkness and removal of the seed piecee0
- Outcome
- constitutive uptake of nitratee1
- Direction
- had any effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root carbohydrate status of 7d old corn seedlings was altered by seed excision, extended light, extended darkness and removal of the seed piece”
e1“Neither of these treatments had any effect on the constitutive uptake of nitrate.”
Claim · model-written summary
Glucose in the uptake medium tripled constitutive nitrate uptake in corn seedlings.
- Taxon
- corn seedlingsZea mays subsp. mayse1
- Treatment
- Glucose added to the uptake mediume0
- Outcome
- constitutive uptakee0
- Direction
- triplinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glucose added to the uptake medium, however, led to a tripling of constitutive uptake”
e1“7d old corn seedlings”
Claim · model-written summary
Glucose in the uptake medium masked the effect of inducing nitrate uptake in corn seedlings.
- Taxon
- corn seedlingsZea mays subsp. mayse1
- Treatment
- Glucose added to the uptake mediume0
- Outcome
- effect of inducing the uptake systeme0
- Direction
- maskede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glucose added to the uptake medium, however, led to a tripling of constitutive uptake and masked any effect of inducing the uptake system.”
e1“7d old corn seedlings”
The same questions in other papers
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See all 12 papers →light · nutrient: content · Zea mays (maize)Positive and negative results
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- negative
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See all 16 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.