Effect of extremely low frequency electromagnetic field on the pathogenicity of Magnaporthe oryzae.

The Science of the total environment · 2023 · Mixed · Low evidence

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MixedLow evidencePaper 5807

Study snapshot

PublicationThe Science of the total environment · 2023

Study typeanimal

Reported directionMixed

Evidence ratingLow

Abstract

Numerous works have reported that extremely low frequency electromagnetic fields (ELF-EMFs) were associated with human health; however, little is known about their effects on the occurrence of agricultural diseases. In this study, Magnaporthe oryzae was used as a model organism, and its pathogenicity under 50 Hz, 3 mT ELF-EMF was studied. Our results showed that the pathogenicity, growth rate, and conidia generation of M. oryzae were enhanced under ELF-EMF exposure. In addition, M. oryzae exposed to ELF-EMF showed enhanced tolerance to cell wall-perturbing agents sodium lauryl sulphate, and increased expression of cell wall integrity-related genes, including RAC1, CDC42, RHO2, and NOX2. In addition, the level of reactive oxygen species (ROS) and the expression level of ROS scavenger system-related gene MoAP1 increased in ELF-EMF-exposed samples, whereas the total antioxidant capacity and the activities of superoxide dismutase and catalase did not change. Results of our study demonstrated that exposure to 50 Hz, 3 mT ELF-EMF enhanced the infection ability of M. oryzae, which present new important challenges for understanding the effect of ELF-EMF exposure on farmland ecology, especially on agricultural diseases.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeanimal

Effect directionmixed

PopulationMagnaporthe oryzae (fungus; model organism)

Sample sizeNot supplied

ExposureELF · 5e-05 MHz

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Under 50 Hz, 3 mT ELF-EMF exposure, Magnaporthe oryzae showed enhanced pathogenicity/infection ability, growth rate, and conidia generation. ELF-EMF-exposed samples also showed increased tolerance to sodium lauryl sulphate, increased expression of cell wall integrity-related genes (RAC1, CDC42, RHO2, NOX2), increased ROS levels and MoAP1 expression, while total antioxidant capacity and superoxide dismutase and catalase activities did not change.

Outcomes measured

Pathogenicity/infection ability
Growth rate
Conidia generation
Tolerance to cell wall-perturbing agent (sodium lauryl sulphate)
Expression of cell wall integrity-related genes (RAC1, CDC42, RHO2, NOX2)
Reactive oxygen species (ROS) level
Expression of ROS scavenger system-related gene (MoAP1)
Total antioxidant capacity
Superoxide dismutase activity
Catalase activity

Limitations

Exposure duration not reported in abstract
Sample size and replication not reported in abstract
Study conducted in a fungal model organism; relevance to human health not addressed

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "ELF",
    "source": "other",
    "frequency_mhz": 5e-05,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Magnaporthe oryzae (fungus; model organism)",
  "sample_size": null,
  "outcomes": [
    "Pathogenicity/infection ability",
    "Growth rate",
    "Conidia generation",
    "Tolerance to cell wall-perturbing agent (sodium lauryl sulphate)",
    "Expression of cell wall integrity-related genes (RAC1, CDC42, RHO2, NOX2)",
    "Reactive oxygen species (ROS) level",
    "Expression of ROS scavenger system-related gene (MoAP1)",
    "Total antioxidant capacity",
    "Superoxide dismutase activity",
    "Catalase activity"
  ],
  "main_findings": "Under 50 Hz, 3 mT ELF-EMF exposure, Magnaporthe oryzae showed enhanced pathogenicity/infection ability, growth rate, and conidia generation. ELF-EMF-exposed samples also showed increased tolerance to sodium lauryl sulphate, increased expression of cell wall integrity-related genes (RAC1, CDC42, RHO2, NOX2), increased ROS levels and MoAP1 expression, while total antioxidant capacity and superoxide dismutase and catalase activities did not change.",
  "effect_direction": "mixed",
  "limitations": [
    "Exposure duration not reported in abstract",
    "Sample size and replication not reported in abstract",
    "Study conducted in a fungal model organism; relevance to human health not addressed"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "extremely low frequency",
    "ELF-EMF",
    "50 Hz",
    "3 mT",
    "Magnaporthe oryzae",
    "pathogenicity",
    "conidia",
    "cell wall integrity",
    "ROS",
    "MoAP1"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1016/j.scitotenv.2023.161939
PubMed: 36731572

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