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Bio-Mercury Remediation Suitability Index: A Novel Proposal That Compiles the PGPR Features of Bacterial Strains and Its Potential Use in Phytoremediation

Author

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  • Marina Robas

    (Department of Pharmaceutical Science and Health, Montepríncipe Campus, CEU San Pablo University, Ctra. Boadilla del Monte Km 5.300, 28668 Boadilla del Monte, Spain)

  • Pedro A. Jiménez

    (Department of Pharmaceutical Science and Health, Montepríncipe Campus, CEU San Pablo University, Ctra. Boadilla del Monte Km 5.300, 28668 Boadilla del Monte, Spain)

  • Daniel González

    (Department of Pharmaceutical Science and Health, Montepríncipe Campus, CEU San Pablo University, Ctra. Boadilla del Monte Km 5.300, 28668 Boadilla del Monte, Spain)

  • Agustín Probanza

    (Department of Pharmaceutical Science and Health, Montepríncipe Campus, CEU San Pablo University, Ctra. Boadilla del Monte Km 5.300, 28668 Boadilla del Monte, Spain)

Abstract

Soil pollution from heavy metals, especially mercury, is an environmental problem for human health. Biological approaches offer interesting tools, which necessarily involve the selection of organisms capable of transforming the environment via bioremediation. To evaluate the potential use of microorganisms in phytorhizoremediation, bacterial strains were isolated from rhizospheric and bulk soil under conditions of chronic natural mercury, which were identified and characterized by studying the following: (i) their plant growth promoting rhizobacteria (PGPR) activities; and (ii) their maximum bactericide concentration of mercury. Information regarding auxin production, phosphate solubilization, siderophore synthesis and 1-aminocyclopropane-1-carboxylic acid deaminase (ACCd) capacity of the isolates was compiled in order to select the strains that fit potential biotechnological use. To achieve this objective, the present work proposes the Bio-Mercury Remediation Suitability Index (BMR-SI), which reflects the integral behavior of the strains for heavy metal polluted soil bioremediation. Only those strains that rigorously fulfilled all of the established criteria were selected for further assays.

Suggested Citation

  • Marina Robas & Pedro A. Jiménez & Daniel González & Agustín Probanza, 2021. "Bio-Mercury Remediation Suitability Index: A Novel Proposal That Compiles the PGPR Features of Bacterial Strains and Its Potential Use in Phytoremediation," IJERPH, MDPI, vol. 18(8), pages 1-14, April.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:8:p:4213-:d:537122
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    References listed on IDEAS

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    1. Reginawanti Hindersah & Gina Nurhabibah & Priyanka Asmiran & Etty Pratiwi, 2019. "Antibiotic Resistance of Azotobacter Isolated from Mercury-Contaminated Area," Journal of Agricultural Studies, Macrothink Institute, vol. 7(3), pages 70-81, September.
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    Cited by:

    1. Daniel González & Marina Robas & Agustín Probanza & Pedro A. Jiménez, 2021. "Selection of Mercury-Resistant PGPR Strains Using the BMRSI for Bioremediation Purposes," IJERPH, MDPI, vol. 18(18), pages 1-10, September.

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    1. Daniel González & Marina Robas & Agustín Probanza & Pedro A. Jiménez, 2021. "Selection of Mercury-Resistant PGPR Strains Using the BMRSI for Bioremediation Purposes," IJERPH, MDPI, vol. 18(18), pages 1-10, September.

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