Intervention effectmodel-written summary

Co-inoculation of BMN1 with Sinorhizobium meliloti increased the number of nodules on alfalfa roots.

A claim from Isolation and characterization of an endophytic bacterium, Bacillus megaterium BMN1, associated with root-nodules of Medicago sativa L. growing in Al-Ahsaa region, Saudi Arabia · 2014

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Co-inoculation of BMN1 with Sinorhizobium meliloti increased the number of nodules on alfalfa roots.

Taxon
alfalfaMedicago sativae2
Treatment
Co-inoculation of BMN1with Sinorhizobium melilotie2
Interactor
Sinorhizobium melilotiSinorhizobium melilotie2symbiont
Second interactor
BMN1e2symbiont
Outcome
number of nodulese2
Direction
increasede2

Not reportedMaterialGeneCompoundOrgan / stageComparatorSettingValueQualifier

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗
Sinorhizobium meliloti
Sinorhizobium meliloti · InteractorNinjatacoshell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e2

“Co-inoculation of BMN1with Sinorhizobium meliloti increased not only the number of nodules formed on roots of alfalfa”

✓ located verbatim in the source · abstract, characters 989–1106
e3

“but also root length and root dry weight under greenhouse conditions”

✓ located verbatim in the source · abstract, characters 1107–1175

Title

Isolation and characterization of an endophytic bacterium, Bacillus megaterium BMN1, associated with root-nodules of Medicago sativa L. growing in Al-Ahsaa region, Saudi Arabia

Ashraf Y. Z. Khalifa; Mohammed A. Almalki Annals of Microbiology 2014. doi:10.1007/s13213-014-0946-4

Other claims from this paper (7)

Record rev-0ea7d1077cdcbe2effcd34f18893dd9b665f548a0d6955e8998124122b40a0a0 · schema claims-v0.9 · position 2 in the model’s answer

Sinorhizobium meliloti · symbiosis · Medicago sativa (alfalfa)Positive and negative results

17 papers: 14 positive, 3 negative or no effect

13 papers in the same direction as this claim · 3 in the opposite direction

  1. negative
    Inactivation of R. meliloti nodABC genes suppressed Nod factor nodulation of alfalfa.

    The common nodABC genes of Rhizobium meliloti are host-range determinants · 1996

    Opposite direction

  2. negative
    Expression of chitinase in S. meliloti RCR2011 impeded alfalfa nodulation

    Expression of a Serratia marcescens Chitinase Gene in Sinorhizobium fredii USDA191 and Sinorhizobium meliloti RCR2011 Impedes Soybean and Alfalfa Nodulation · 1999

    Opposite direction

  3. no effect
    Under nondrought conditions engineered S. meliloti inoculation did not significantly affect alfalfa biomass or nodule formation.

    Insights into the Impact of Trans-Zeatin Overproduction-Engineered Sinorhizobium meliloti on Alfalfa (Medicago sativa L.) Tolerance to Drought Stress · 2024

    Opposite direction

  4. positive
    ACC deaminase-producing S. meliloti strains showed 35 to 40% greater alfalfa nodulation efficiency.

    Expression of an Exogenous 1-Aminocyclopropane-1-Carboxylate Deaminase Gene in Sinorhizobium meliloti Increases Its Ability To Nodulate Alfalfa · 2004

    Same direction

  5. positive
    Co-inoculated alfalfa formed mixed infected nodules capable of atmospheric nitrogen fixation.

    Cooperative Action of Rhizobium meliloti Nodulation and Infection Mutants during the Process of Forming Mixed Infected Alfalfa Nodules. · 1990

    Same direction

  6. positive
    Coinoculation with the ACC-deaminase strain and E. meliloti increased alfalfa nodulation in laboratory and greenhouse conditions.

    Plant growth promoting rhizobacteria with ACC deaminase activity isolated from Mediterranean dryland areas in Chile: Effects on early nodulation in alfalfa · 2018

    Same direction

  7. positive
    Dual inoculation increased alfalfa nodule number and occupancy compared with S. meliloti alone.

    Field evaluation of dual inoculation of alfalfa with Sinorhizobium meliloti and Penicillium bilaii · 2000 · compared with inoculation with S. meliloti alone

    Same direction

  8. positive
    Co-inoculation increased lucerne BNF at the first and second harvest.

    Nitrogen fixation and yield of lucerne (Medicago sativa L.), as affected by co-inoculation with Sinorhizobium meliloti and arbuscular mycorrhiza under dry organic farming conditions · 2009

    Same direction

8 papers more in this group

See all 17 papers →

inoculation · symbiosis · Medicago sativa (alfalfa)Positive and negative results

57 papers: 49 positive, 8 negative or no effect

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

  1. positive
    Co-inoculation of all non-rhizobial strains with S. meliloti positively influenced alfalfa nodule number relative to inoculation with S. meliloti alone.

    Isolation and characterization of endophytic non-rhizobial bacteria from root nodules of alfalfa (Medicago sativa L.). · 2009 · compared with inoculation with S. meliloti alone

    Same directionCited by this paper

  2. negative
    Omethoate applied to seed with peat-based inoculant significantly reduced nodule number on subterranean clover and lucerne seedlings compared with inoculated controls.

    Using omethoate insecticide and legume inoculant on seed · 1991 · compared with inoculated controls

    Opposite direction

  3. negative
    Glomus intraradices did not complement defective rhizobia for Medicago sativa nodulation despite sulfated Nod factor.

    Investigation of Four Classes of Non-nodulating White Sweetclover (Melilotus alba annua Desr.) Mutants and Their Responses to Arbuscular-Mycorrhizal Fungi · 2002

    Opposite direction

  4. no effect
    Under nondrought conditions engineered S. meliloti inoculation did not significantly affect alfalfa biomass or nodule formation.

    Insights into the Impact of Trans-Zeatin Overproduction-Engineered Sinorhizobium meliloti on Alfalfa (Medicago sativa L.) Tolerance to Drought Stress · 2024

    Opposite direction

  5. negative
    Disrupting nodH in Or191-like rhizobia severely delayed their nodulation of alfalfa.

    Identification and Characterization of a nodH Ortholog from the Alfalfa-Nodulating Or191-Like Rhizobia · 2007

    Opposite direction

  6. negative
    Nodulation kinetics was much slower in M. sativa inoculated with O. cytisi Azn6.2 than with the natural symbiont Ensifer meliloti 1021.

    Competition for alfalfa nodulation under metal stress by the metal‐tolerant strain Ochrobactrum cytisi Azn6.2 · 2019 · compared with the natural symbiont Ensifer meliloti 1021

    Opposite direction

  7. negative
    Six alfalfa rhizobia strains produced no nodules on inoculated alfalfa plants.

    Genetic diversity and phylogeny of alfalfa nodulating rhizobia assessed by nifH and nodA genes · 2012

    Opposite direction

  8. negative
    UV-treated A. tumefaciens formed an atypical non-nitrogen-fixing nodule on lucerne root.

    [The presence of Agrobacterium tumefaciens in lucerne root nodules]. · 1977

    Opposite direction

48 papers more in this group

See all 57 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.