Intervention effectmodel-written summary

Low nitrogen without kinetin gave the best nitrogenase activity in associations.

A claim from Symbiotic activity of nodule bacteria in alfalfa crops · 2024

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Low nitrogen without kinetin gave the best nitrogenase activity in associations.

Taxon
alfalfaMedicago sativat0
Treatment
a medium containing a small amount of nitrogen and without kinetine0
Interactor
nodule bacteriat0symbiont
Outcome
nitrogenase activity of associationse0
Direction
beste0

Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“incubation of associations on a medium containing a small amount of nitrogen and without kinetin contributes to the best manifestation of nitrogenase activity of associations.”

✓ located verbatim in the source · abstract, characters 910–1085
t0

“Symbiotic activity of nodule bacteria in alfalfa”

✓ located verbatim in the source · title, characters 0–48

Title

Symbiotic activity of nodule bacteria in alfalfa crops

G.V. Lushchenko; V.I. Gasiev BIO Web of Conferences 2024. doi:10.1051/bioconf/202414502015

Other claims from this paper (5)

Record rev-9cd64e9d3bcae6a62bb84b47973b2de3fce2d30d6fb0786528a5839470531208 · schema claims-v0.9 · position 3 in the model’s answer

in vitro · physiology: enzyme activity · Medicago sativa (alfalfa)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

2 papers in the same direction as this claim · 1 in the opposite direction

  1. no effect
    Adding potassium to the reaction medium did not restore enzyme activity.

    Role of Potassium in Carbon Dioxide Assimilation in Medicago sativa L · 1979 · compared with normal rates

    Opposite direction

  2. positive
    Glutamate oxaloacetatetransaminase activity was highest in hardy plants under hardening conditions.

    Root Respiration, Nodulation, and Enzyme Activities in Alfalfa During Cold Acclimation1 · 1981 · compared with those with lesser hardiness

    Same direction

  3. positive
    Medium nitrogen and phosphorus promoted leaf nitrogen metabolism enzyme activities in alfalfa.

    Effects of nitrogen and phosphorus addition on growth and leaf nitrogen metabolism of alfalfa in alkaline soil in Yinchuan Plain of Hetao Basin · 2022

    Same direction

See all 4 papers →

nitrogen · physiology: enzyme activity · Medicago sativa (alfalfa)Results agree

7 papers: 7 positive, 0 negative or no effect

6 papers in the same direction as this claim

  1. positive
    Nitrogen input increased three soil oxidoreductase activities.

    Different Forms and Proportions of Exogenous Nitrogen Promote the Growth of Alfalfa by Increasing Soil Enzyme Activity · 2022

    Same direction

  2. positive
    Least added nitrogen produced maximum rate constants for nodulation and nitrogenase activity.

    Effects of root environment on the kinetics of 1st month growth and nodulation of alfalfa · 1982

    Same direction

  3. positive
    Nitrogen treatments significantly increased nitrate reductase and glutamine synthetase activities relative to CK.

    Effects of Nitrogen Application on Nitrogen Metabolism and Nitrogen Accumulation of Alfalfa( Medicago Sativa) · 2015 · compared with CK

    Same direction

  4. positive
    Nitrogen treatments significantly increased alfalfa nitrogenase activity relative to CK.

    Effects of exogenous nitrogen forms on root characteristics of alfalfa at different growth stages · 2015 · compared with CK

    Same direction

  5. positive
    Nitrogen supply raised nitrogenase activity.

    Effects of NO_3~--N and NH_4~+-N on root growth,nodulation and nitrogen-fixation of alfalfa · 2011 · compared with N-free plants

    Same direction

  6. positive
    Different nitrogen treatments significantly increased nodule weight, nitrogenase activity and total nitrogen content of alfalfa compared with CK.

    Effects of nitrogen forms on growth,nodulation and nitrogen-fixation of alfalfa at floweringstage · 2014 · compared with CK

    Same direction

See all 7 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.