Evidence map›Paper›PMID 30140025›Full record

ArticleScientific reports2018

Root exudate metabolomes change under drought and show limited capacity for recovery.

Albert Gargallo-Garriga, Catherine Preece, Jordi Sardans, Michal Oravec, Otmar Urban, Josep Peñuelas

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 118 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
118citing papers in PubMed, 2 pooled it
34.1field-weighted citation impact, top 1% of its field
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

118 citing papers in PubMed, 2 syntheses or guidelines pooled it, 384 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Drought Stress Mediated Changes in Food Crops: Mechanisms and Remediation Strategies.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  4. Article
  5. Thermal imaging as a tool for studying circadian rhythms in roots.The Plant journal : for cell and molecular biology · 2026
    Article
  6. Review
  7. Abiotic Stress Tolerance in Foxtail Millet (Plants (Basel, Switzerland) · 2026
    Review
  8. Article
  9. Article
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  11. Article
  12. Review
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58 more citing papers are in PubMed but not listed here.

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 at 3 institutions in 2 countries.

Albert Gargallo-GarrigaCSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, 08193, Catalonia, Spain. albert.gargallo@gmail.com.
Catherine PreeceCSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, 08193, Catalonia, Spain.ORCID 0000-0001-6584-3541
Jordi SardansCSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, 08193, Catalonia, Spain.
Michal OravecGlobal Change Research Institute, The Czech Academy of Sciences, Belidla 986/4a, CZ-60300, Brno, Czech Republic.
Otmar UrbanGlobal Change Research Institute, The Czech Academy of Sciences, Belidla 986/4a, CZ-60300, Brno, Czech Republic.
Josep PeñuelasCSIC, Global Ecology Unit CREAF- CSIC-UAB, Bellaterra, 08193, Catalonia, Spain.ORCID 0000-0002-7215-0150
Centre for Research on Ecology and Forestry Applications · ESCzech Academy of Sciences, Global Change Research Institute · CZConsejo Superior de Investigaciones Científicas · ES

Funding

EC | European Research Council (ERC) ERC-2013-SyG-610028European Council of International Schools (ECIS) ERC-2013-SyG-610028European Research Council 610028
6 · The paper itself

Abstract

Root exudates comprise a large variety of compounds released by plants into the rhizosphere, including low-molecular-weight primary metabolites (particularly saccharides, amino acids and organic acids) and secondary metabolites (phenolics, flavonoids and terpenoids). Changes in exudate composition could have impacts on the plant itself, on other plants, on soil properties (e.g. amount of soil organic matter), and on soil organisms. The effects of drought on the composition of root exudates, however, have been rarely studied. We used an ecometabolomics approach to identify the compounds in the exudates of Quercus ilex (holm oak) under an experimental drought gradient and subsequent recovery. Increasing drought stress strongly affected the composition of the exudate metabolome. Plant exudates under drought consisted mainly of secondary metabolites (71% of total metabolites) associated with plant responses to drought stress, whereas the metabolite composition under recovery shifted towards a dominance of primary metabolites (81% of total metabolites). These results strongly suggested that roots exude the most abundant root metabolites. The exudates were changed irreversibly by the lack of water under extreme drought conditions, and the plants could not recover.

Indexed as

DroughtsMetabolomePlant ExudatesPlant RootsQuercusPlant Exudates

Identifiers

PMID30140025
PMCPMC6107494
OpenAlexW2887980890

What OpenQuestion holds

Textmetadata
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.