Abstract
'Pawnee' wheat ( Triticutn aestivum L.) seedlings were grown under lighting of low (7,500 lux) or high (15,600 lux) intensities, blue (380‐470 mu) or red (680‐740 mu) qualities, and short (8‐hr) or long (16‐hr) nhotoperiods. A single level of N was supplied in graded ratios of nitrate and ammonium in solution cultures. In leaf blades, high light intensity had no consistent effect on nitrate reductase (NR) activity, increased soluble protein, and decreased nitrate. Blue light increased NR activity and soluble protein but decreased nitrate as compared with red light. The long photoperiod increased NR activity and decreased nitrate and soluble protein as compared with the short photoperiod. The light treatments had little effect on roots except for an accumulation of nitrate under the short photoperiod. NR activity and nitrate content in leaf blades and roots increased under all light treatments as the nitrate‐to‐ammonium ratio in the nutrient solution increased, and soluble protein content decreased slightly.
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Claims 11
Claim · model-written summary
High light intensity had no consistent effect on wheat leaf nitrate reductase activity.
- Taxon
- Wheat
Triticum aestivumt0 - Organ / stage
- leaf bladese0
- Treatment
- high light intensitye0
- Outcome
- nitrate reductase (NR) activitye0
- Direction
- no consistent effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In leaf blades, high light intensity had no consistent effect on nitrate reductase (NR) activity”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
High light increased wheat leaf soluble protein.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- Wheatt0
- Treatment
- high light intensitye0
- Outcome
- soluble proteine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high light intensity had no consistent effect on nitrate reductase (NR) activity, increased soluble protein, and decreased nitrate”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
High light decreased wheat leaf nitrate.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- high light intensitye0
- Outcome
- nitratee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high light intensity had no consistent effect on nitrate reductase (NR) activity, increased soluble protein, and decreased nitrate”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
Blue light increased wheat leaf nitrate reductase activity and soluble protein relative to red light.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Blue lighte0
- Outcome
- NR activity and soluble proteine0
- Direction
- increasede0
- Comparator
- red lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Blue light increased NR activity and soluble protein but decreased nitrate as compared with red light”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
Blue light decreased wheat leaf nitrate relative to red light.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Blue lighte0
- Outcome
- nitratee0
- Direction
- decreasede0
- Comparator
- red lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Blue light increased NR activity and soluble protein but decreased nitrate as compared with red light”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
Long photoperiod increased wheat leaf nitrate reductase activity relative to short photoperiod.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- long photoperiode0
- Outcome
- NR activitye0
- Direction
- increasede0
- Comparator
- short photoperiode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The long photoperiod increased NR activity and decreased nitrate and soluble protein as compared with the short photoperiod”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
Long photoperiod decreased wheat leaf nitrate and soluble protein relative to short photoperiod.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- long photoperiode0
- Outcome
- nitrate and soluble proteine0
- Direction
- decreasede0
- Comparator
- short photoperiode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The long photoperiod increased NR activity and decreased nitrate and soluble protein as compared with the short photoperiod”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
Light treatments had little effect on wheat roots except nitrate accumulation under short photoperiod.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- light treatmentse0
- Outcome
- rootse0
- Direction
- little effecte0
- Qualifier
- except for an accumulation of nitrate under the short photoperiode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The light treatments had little effect on roots except for an accumulation of nitrate under the short photoperiod”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
Short photoperiod led to nitrate accumulation in wheat roots.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- short photoperiode0
- Outcome
- nitratee0
- Direction
- accumulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an accumulation of nitrate under the short photoperiod”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
Increasing nitrate-to-ammonium ratio increased nitrate reductase activity and nitrate content in wheat leaves and roots under all light treatments.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- leaf blades and rootse0
- Treatment
- nitrate‐to‐ammonium ratio in the nutrient solutione0
- Outcome
- NR activity and nitrate contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NR activity and nitrate content in leaf blades and roots increased under all light treatments as the nitrate‐to‐ammonium ratio in the nutrient solution increased”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
Claim · model-written summary
Increasing nitrate-to-ammonium ratio slightly decreased wheat soluble protein content.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Lightt0
- Outcome
- soluble protein contente0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soluble protein content decreased slightly”
t0“Influence of Intensity, Quality, and Duration of Light on Nitrogen Reduction and Assimilation in Wheat1”
The same questions in other papers
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4 papers in the same direction as this paper · 3 in the opposite direction
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4 papers more in this group
See all 8 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.