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EDTA-Assisted Metal Uptake in Raphanus sativus L. and Brassica oleracea L.: Assessment of Toxicity and Food Safety

Abstract

A study was conducted to determine the effect of ethylenediaminetetraacetic acid (EDTA) on phytoextraction potential of radish and cabbage. Plant biomass, photosynthetic pigments, proline and phenolics were significantly affected by the accumulation of heavy metals (HM). The metal uptake potential was increased significantly by the application of EDTA. Target hazard quotient (THQ) associated with exposure of these contaminants to food chain was calculated. Agronomic interventions to increase mineral levels in crops often increases the leaf concentrations only, the mineral concentration in edible portions are not increased at desired level due to low mobility of Zn in phloem. Since the leaves of both these crops are edible and a component of staple vegetarian diet, biofortification through Zn present in soil and its solubilization and mobilization through chelators can be implemented. However in no such instance these crops should be consumed when grown on Pb contaminated soil due to associated hazards.

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Acknowledgements

Junior Research Fellowship to Ritu Chaturvedi (08/109(0011)/2013-EMR-I) by the Council of Scientific and Industrial Research is duly acknowledged. The support of Fundação para a Ciência e a Tecnologia, through the strategic Project UID/MAR/04292/2019 granted to MARE is gratefully acknowledged. We also thank University Grants Commission for granting Post Doctoral Fellowship (/PDFSS-2014-15-SC-UTT-8854) to Mayank Varun. We wish to acknowledge Dr. B.R. Ambedkar University, Agra for providing facilities.

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Correspondence to Ritu Chaturvedi.

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Chaturvedi, R., Favas, P., Pratas, J. et al. EDTA-Assisted Metal Uptake in Raphanus sativus L. and Brassica oleracea L.: Assessment of Toxicity and Food Safety. Bull Environ Contam Toxicol 103, 490–495 (2019). https://doi.org/10.1007/s00128-019-02651-9

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Keywords

  • Heavy metal
  • Phytoremediation
  • Hazard quotient
  • Risk assessment