Evidence map›Paper›PMID 31249390›Full record

ArticleThe ISME journal2019

Plant-driven niche differentiation of ammonia-oxidizing bacteria and archaea in global drylands.

Chanda Trivedi, Peter B Reich, Fernando T Maestre, Hang-Wei Hu, Brajesh K Singh, Manuel Delgado-Baquerizo

Abstract read
In one paragraph

Article in The ISME journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

25 citing papers in PubMed.

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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.

Chanda TrivediHawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith South, NSW, 2751, Australia.
Peter B ReichHawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith South, NSW, 2751, Australia.
Fernando T MaestreDepartamento de Biología y Geología, Física y Química Inorgánica, Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, Móstoles, 28933, Spain.
Hang-Wei HuFaculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Melbourne, VIC, 3010, Australia.
Brajesh K SinghHawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith South, NSW, 2751, Australia. b.singh@westernsydney.edu.au.ORCID http://orcid.org/0000-0003-4413-4185
Manuel Delgado-BaquerizoHawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith South, NSW, 2751, Australia. M.DelgadoBaquerizo@gmail.com.ORCID http://orcid.org/0000-0002-6499-576X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Under controlled laboratory conditions, high and low ammonium availability are known to favor soil ammonia-oxidizing bacteria (AOB) and archaea (AOA) communities, respectively. However, whether this niche segregation is maintained under field conditions in terrestrial ecosystems remains unresolved, particularly at the global scale. We hypothesized that perennial vegetation might favor AOB vs. AOA communities compared with adjacent open areas devoid of perennial vegetation (i.e., bare soil) via several mechanisms, including increasing the amount of ammonium in soil. To test this niche-differentiation hypothesis, we conducted a global field survey including 80 drylands from 6 continents. Data supported our hypothesis, as soils collected under plant canopies had higher levels of ammonium, as well as higher richness (number of terminal restriction fragments; T-RFs) and abundance (qPCR amoA genes) of AOB, and lower richness and abundance of AOA, than those collected in open areas located between plant canopies. Some of the reported associations between plant canopies and AOA and AOB communities can be a consequence of the higher organic matter and available N contents found under plant canopies. Other aspects of soils associated with vegetation including shading and microclimatic conditions might also help explain our results. Our findings provide strong evidence for niche differentiation between AOA and AOB communities in drylands worldwide, advancing our understanding of their ecology and biogeography at the global scale.

Indexed as

Soil MicrobiologyAmmoniaArchaeaBacteriaBetaproteobacteriaClimateEcosystemEnvironmentNitrificationOxidation-ReductionPhylogenyAmmonia

Identifiers

PMID31249390
PMCPMC6794256

What OpenQuestion holds

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Registered trials

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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.