Intervention effectmodel-written summary

Ammonium promoted nitrate reductase formation.

A claim from The Induction of Nitrate Reductase and the Preferential Assimilation of Ammonium in Germinating Rice Seedlings · 1969

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium promoted nitrate reductase formation.

Treatment
ammoniume0
Outcome
Formation of the enzymee0
Direction
promotede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Formation of the enzyme is promoted by the presence of ammonium”

✓ located verbatim in the source · abstract, characters 343–406
t0

“Rice”

✓ located verbatim in the source · title, characters 96–100

Title

The Induction of Nitrate Reductase and the Preferential Assimilation of Ammonium in Germinating Rice Seedlings

T. C. Shen PLANT PHYSIOLOGY 1969. doi:10.1104/pp.44.11.1650

Other claims from this paper (9)

Record rev-d5673a4c19f752c312c857f2d0720e7fbb3dd05399f70013c09377f5f9c73726 · schema claims-v0.9 · position 5 in the model’s answer

nitrogen · physiology: enzyme activity · Oryza sativa (rice)Positive and negative results

36 papers: 28 positive, 8 negative or no effect

27 papers in the same direction as this claim · 7 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
    After 24 h of N supply withdrawal, nitrate reductase activity in Yang Dao showed no decrease.

    Comparing nitrate storage and remobilization in two rice cultivars that differ in their nitrogen use efficiency · 2007

    Opposite direction

  2. negative
    Macronutrient deficiencies depressed rice seedling nitrate reductase activity.

    Nitrate assimilation in rice seedlings as affected by mineral nutrition · 1977

    Opposite direction

  3. negative
    High lanthanum nitrate doses inhibited hydrolytic enzyme activities.

    Studies of physiological and biochemical bases of Lanthanum on increasing seed vigor of rice · 1999

    Opposite direction

  4. negative
    Ammonium reduced nitrate induced NR activity.

    Differential regulation of nitrate assimilatory enzymes by methionine sulfoximine in rice · 2010

    Opposite direction

  5. negative
    Increasing fertilizer N marginally decreased rice rhizosphere nitrogenase activity.

    Effect of water and fertilizer management on nitrogen fixation (C2H2 reduction) associated with rice rhizosphere. · 1996

    Opposite direction

  6. no effect
    RNase activity was little affected by the deficiencies.

    Relationship between a mineral deficiency and metabolic processes : The effect of N-, P- and K-deficiencies on RNA metabolism in TN-1 rice1 · 1980

    Opposite directionAbout lacking this nutrient, so it counts the other way round

  7. negative
    Low nitrogen severely affected root enzymatic activities in both rice cultivars compared with normal nitrogen.

    Comparative Physiological and Transcriptomic Characterisation of Two Japonica Rice Cultivars Under Low Nitrogen Stress · 2025 · compared with NN treatment

    Opposite direction

  8. no effect
    BGA with 80 kg/ha urea was comparable to the recommended 160 kg/ha dose for grain yield, nitrogen content and nitrate reductase activity in rice.

    Role of biofertilizer (BGA) & nitrogenous fertilizer on grain yield, nitrogen content & nitrate reductase activity of two rice (Oryza sativa) varieties jaya & sarju-52 · 2020 · compared with recommended dose of 160 kg/ha

    No difference from an alternative

27 papers more in this group

See all 36 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.