ReviewFrontiers in plant science2016
Future Climate CO2 Levels Mitigate Stress Impact on Plants: Increased Defense or Decreased Challenge?
Review in Frontiers in plant science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
29 citing papers in PubMed, 1 synthesis or guideline pooled it, 99 citations in OpenAlex.
- Pooled it
- COPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Review
- Review
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- Elevated atmospheric COScientific reports · 2024Article
- Soil Contamination with Europium Induces Reduced Oxidative Damage inPlants (Basel, Switzerland) · 2023Article
- Future Climate COPlants (Basel, Switzerland) · 2023Article
- Elevated COPlants (Basel, Switzerland) · 2023Article
- Physiological and biochemical responses of wheat to synergistic effects of selenium nanoparticles and elevated COFrontiers in plant science · 2023Article
- Elevated COFrontiers in plant science · 2023Article
- Elevated tropospheric ozone and crop production: potential negative effects and plant defense mechanisms.Frontiers in plant science · 2023Review
- Physiological and Molecular Responses of Woody Plants Exposed to Future Atmospheric COPlants (Basel, Switzerland) · 2022Review
- Assessing optimal nitrate/ ammonium- ratios in baby-leaf lettuce to enhance the heat stress tolerance under elevated CO2 conditions.PloS one · 2022Article
- Interactive effect of elevated COFrontiers in plant science · 2022Article
- Mechanisms of elevated COPlant cell reports · 2021Review
- Interactive effect of elevated tropospheric ozone and carbon dioxide on radiation utilisation, growth and yield of chickpea (Cicer arietinum L.).International journal of biometeorology · 2021Article
- Delineating the mechanisms of elevated COPlant cell reports · 2021Review
- Short photoperiod attenuates COPhysiology and molecular biology of plants : an international journal of functional plant biology · 2021Article
- Potential effects of a high COPlant-environment interactions (Hoboken, N.J.) · 2020Review
- An Oxygen Delivery Polymer Enhances Seed Germination in a Martian-like Environment.Astrobiology · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Elevated atmospheric CO2 can stimulate plant growth by providing additional C (fertilization effect), and is observed to mitigate abiotic stress impact. Although, the mechanisms underlying the stress mitigating effect are not yet clear, increased antioxidant defenses, have been held primarily responsible (antioxidant hypothesis). A systematic literature analysis, including "all" papers [Web of Science (WoS)-cited], addressing elevated CO2 effects on abiotic stress responses and antioxidants (105 papers), confirms the frequent occurrence of the stress mitigation effect. However, it also demonstrates that, in stress conditions, elevated CO2 is reported to increase antioxidants, only in about 22% of the observations (e.g., for polyphenols, peroxidases, superoxide dismutase, monodehydroascorbate reductase). In most observations, under stress and elevated CO2 the levels of key antioxidants and antioxidant enzymes are reported to remain unchanged (50%, e.g., ascorbate peroxidase, catalase, ascorbate), or even decreased (28%, e.g., glutathione peroxidase). Moreover, increases in antioxidants are not specific for a species group, growth facility, or stress type. It seems therefore unlikely that increased antioxidant defense is the major mechanism underlying CO2-mediated stress impact mitigation. Alternative processes, probably decreasing the oxidative challenge by reducing ROS production (e.g., photorespiration), are therefore likely to play important roles in elevated CO2 (relaxation hypothesis). Such parameters are however rarely investigated in connection with abiotic stress relief. Understanding the effect of elevated CO2 on plant growth and stress responses is imperative to understand the impact of climate changes on plant productivity.
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Registered trials
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.