Intervention effectmodel-written summary

Urea increased stilbene concentration in Tempranillo.

A claim from Evaluation of Grenache, Graciano and Tempranillo grape stilbene content after field applications of elicitors and nitrogen compounds · 2017

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Urea increased stilbene concentration in Tempranillo.

Taxon
grapet0
Material
Tempranilloe0
Treatment
urea treatmente0
Outcome
stilbene concentratione1
Direction
increasede0

Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Verbatim

e0

“urea treatment increased it in Tempranillo”

✓ located verbatim in the source · abstract, characters 1143–1185
t0

“grape stilbene content”

✓ located verbatim in the source · title, characters 49–71
e1

“phenylalanine significantly increased the stilbene concentration in Graciano”

✓ located verbatim in the source · abstract, characters 1059–1135

Title

Evaluation of Grenache, Graciano and Tempranillo grape stilbene content after field applications of elicitors and nitrogen compounds

Javier Portu; Rosa López; Philipp Ewald; et al. Journal of the Science of Food and Agriculture 2017. doi:10.1002/jsfa.8662

Other claims from this paper (8)

Record rev-a9ce00697c336840ffe8ccdf1fe3ba91d715cb07d43b14803349525481b8f7ab · schema claims-v0.9 · position 7 in the model’s answer

nitrogen · molecular: metabolites · VitisPositive and negative results

20 papers: 16 positive, 4 negative or no effect

15 papers in the same direction as this claim · 4 in the opposite direction

  1. no effect
    Nitrogen supply had no effect on tryptophan or IAA concentrations in musts and wines of grapevines.

    Effect of different N fertilization of vine on the tryptophan, free and total indole-3-acetic acid concentrations · 2015

    Opposite direction

  2. no effect
    Foliar nitrogen and amino acid treatments of grapevine did not significantly change total amino acid concentration in wines.

    Amino acid content in red wines obtained from grapevine nitrogen foliar treatments: consumption during the alcoholic fermentation · 2014

    Opposite direction

  3. negative
    Higher nitrogen supply reduced grapevine stilbene synthesis.

    Investigations on the influence of N fertilizer on resistance to powdery mildew (Oidium tuckeri) downy mildew (Plasmopara viticola) and on phytoalexin synthesis in different grapevine varieties · 2015

    Opposite direction

  4. negative
    GA₃ and urea treatments, particularly 1–10 and 1–20 ppm, produced reduction soluble solid content (SSC).

    Impact of Spraying ‘Early Sweet’ Grapevines with Gibberellic Acid and Urea for Reducing Shot Berries Percentage and Improving Yield and Cluster Quality · 2025

    Opposite direction

  5. positive
    1% Urea vine foliage spraying at full bloom significantly decreased berry number, weight and cluster compactness compared with untreated vines.

    Effect of berry Thinning, CPPU spraying and pinching on cluster and berry quality of two grapevine cultivars · 2009 · compared with untreated one

    Same direction

  6. positive
    Foliar urea at 2 kg N ha(-1) significantly increased wine histamine concentration by 65% versus control.

    Influence of fertilisation with foliar urea on the content of amines in wine · 2011 · compared with control sample

    Same direction

  7. positive
    Higher external nitrate decreased root chloride in salt-treated 140 Ruggeri and K51-40.

    Analysis of the salt exclusion phenotype in rooted leaves of grapevine (Vitisspp.) · 2018

    Same direction

  8. positive
    Ammonium transiently raised ADC activity in nonirradiated grape cells.

    Ammonium requirement for radiation‐induced accumulation of polyamines in suspension‐cultured grape cells · 1993

    Same direction

11 papers more in this group

See all 20 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.