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Modification of catalase and MAPK in Vicia faba cultivated in soil with high natural radioactivity and treated with a static magnetic field.

Journal of plant physiology · 2014 · Mixed · Low evidence

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MixedLow evidencePaper 3119

Compared with controls, plants treated with static magnetic field (30 mT) and/or high natural radioactivity soil showed significant differences in catalase and MAPK gene expression. Catalase activity increased alongside increased catalase gene expression and …

Study snapshot

PublicationJournal of plant physiology · 2014
Study typeanimal
Reported directionMixed
Evidence ratingLow

Abstract

The effects of a static magnetic field (SMF) and high natural radioactivity (HR) on catalase and MAPK genes in Vicia faba were investigated. Soil samples with high natural radioactivity were collected from Ramsar in north Iran where the annual radiation absorbed dose from background radiation is higher than 20mSv/year. The specific activity of the radionuclides of (232)Th, (236)Ra, and (40)K was measured using gamma spectrometry. The seeds were planted either in the soil with high natural radioactivity or in the control soils and were then exposed to a SMF of 30mT for 8 days; 8h/day. Levels of expression of catalase and MAPK genes, catalase activity and H2O2 content were evaluated. The results demonstrated significant differences in the expression of catalase and MAPK genes in SMF- and HR-treated plants compared to the controls. An increase in catalase activity was accompanied by increased expression of its gene and accumulation of H2O2. Relative expression of the MAPK gene in treated plants, however, was lower than those of the controls. The results suggest that the response of V. faba plants to SMF and HR may be mediated by modification of catalase and MAPK.

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
PopulationVicia faba (plants) cultivated in soil with high natural radioactivity (Ramsar, Iran) and/or exposed to a static magnetic field
Sample sizeNot supplied
ExposureELF · 8 days; 8 h/day
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Compared with controls, plants treated with static magnetic field (30 mT) and/or high natural radioactivity soil showed significant differences in catalase and MAPK gene expression. Catalase activity increased alongside increased catalase gene expression and increased H2O2 accumulation, while relative MAPK gene expression in treated plants was lower than in controls.

Outcomes measured

  • Catalase gene expression
  • MAPK gene expression
  • Catalase activity
  • H2O2 content

Limitations

  • Sample size not reported in abstract
  • Design details (randomization/blinding) not described
  • Separate effects of SMF vs high natural radioactivity vs combined exposure are not clearly distinguished in the abstract
  • Exposure characterization for radioactivity is limited to annual dose context and radionuclide activity measurements; plant dose not reported
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": "ELF",
    "source": "static magnetic field",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "8 days; 8 h/day"
  },
  "population": "Vicia faba (plants) cultivated in soil with high natural radioactivity (Ramsar, Iran) and/or exposed to a static magnetic field",
  "sample_size": null,
  "outcomes": [
    "Catalase gene expression",
    "MAPK gene expression",
    "Catalase activity",
    "H2O2 content"
  ],
  "main_findings": "Compared with controls, plants treated with static magnetic field (30 mT) and/or high natural radioactivity soil showed significant differences in catalase and MAPK gene expression. Catalase activity increased alongside increased catalase gene expression and increased H2O2 accumulation, while relative MAPK gene expression in treated plants was lower than in controls.",
  "effect_direction": "mixed",
  "limitations": [
    "Sample size not reported in abstract",
    "Design details (randomization/blinding) not described",
    "Separate effects of SMF vs high natural radioactivity vs combined exposure are not clearly distinguished in the abstract",
    "Exposure characterization for radioactivity is limited to annual dose context and radionuclide activity measurements; plant dose not reported"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "static magnetic field",
    "30 mT",
    "high natural radioactivity",
    "Ramsar",
    "Vicia faba",
    "catalase",
    "MAPK",
    "H2O2",
    "gamma spectrometry",
    "oxidative stress"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.2,
      "reason": "Involves exposure to high natural radioactivity (environmental radiation context), though not occupational; hub relevance is weak."
    }
  ]
}
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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.jplph.2013.10.019
PubMed: 24484963

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