Evidence map›Paper›PMID 25950678›Full record

ArticlePloS one2015

Influence of edaphic, climatic, and agronomic factors on the composition and abundance of nitrifying microorganisms in the rhizosphere of commercial olive crops.

Joan Caliz, Miguel Montes-Borrego, Xavier Triadó-Margarit, Madis Metsis, Blanca B Landa, Emilio O Casamayor

Abstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed.

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  4. Impact of mineral fertilization andFrontiers in microbiology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Joan CalizBiogeodynamics & Biodiversity Group, Centro de Estudios Avanzados de Blanes, CEAB-CSIC, Blanes, Girona.
Miguel Montes-BorregoInstitute for Sustainable Agriculture, Spanish National Research Council (CSIC), Campus de Excelencia Internacional Agroalimentario (ceiA3), Córdoba, Spain.
Xavier Triadó-MargaritBiogeodynamics & Biodiversity Group, Centro de Estudios Avanzados de Blanes, CEAB-CSIC, Blanes, Girona.
Madis MetsisTallinn University, Institute of Mathematics and Natural Sciences, Narva mnt 25, Tallinn 10120, Estonia.
Blanca B LandaInstitute for Sustainable Agriculture, Spanish National Research Council (CSIC), Campus de Excelencia Internacional Agroalimentario (ceiA3), Córdoba, Spain.
Emilio O CasamayorBiogeodynamics & Biodiversity Group, Centro de Estudios Avanzados de Blanes, CEAB-CSIC, Blanes, Girona.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The microbial ecology of the nitrogen cycle in agricultural soils is an issue of major interest. We hypothesized a major effect by farm management systems (mineral versus organic fertilizers) and a minor influence of soil texture and plant variety on the composition and abundance of microbial nitrifiers. We explored changes in composition (16S rRNA gene) of ammonia-oxidizing archaea (AOA), bacteria (AOB), and nitrite-oxidizing bacteria (NOB), and in abundance of AOA and AOB (qPCR of amoA genes) in the rhizosphere of 96 olive orchards differing in climatic conditions, agricultural practices, soil properties, and olive variety. Majority of archaea were 1.1b thaumarchaeota (soil crenarchaeotic group, SCG) closely related to the AOA genus Nitrososphaera. Most AOB (97%) were identical to Nitrosospira tenuis and most NOB (76%) were closely related to Nitrospira sp. Common factors shaping nitrifiers assemblage composition were pH, soil texture, and olive variety. AOB abundance was positively correlated with altitude, pH, and clay content, whereas AOA abundances showed significant relationships with organic nitrogen content and exchangeable K. The abundances of AOA differed significantly among soil textures and olive varieties, and those of AOB among soil management systems and olive varieties. Overall, we observed minor effects by orchard management system, soil cover crop practices, plantation age, or soil organic matter content, and major influence of soil texture, pH, and olive tree variety.

Indexed as

Crops, AgriculturalNitrificationOleaSoil MicrobiologyArchaeaBacteriaClimateHydrogen-Ion Concentration

Identifiers

PMID25950678
PMCPMC4423868

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.