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Potential of plant beneficial bacteria and arbuscular mycorrhizal fungi in phytoremediation of metal-contaminated saline soils

Ma, Ying ; Rajkumar, Mani ; Oliveira, Rui S. ; Zhang, Chang ; Freitas, Helena

Journal of hazardous materials, 2019-11, Vol.379, p.120813-120813, Article 120813 [Periódico revisado por pares]

Netherlands: Elsevier B.V

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  • Título:
    Potential of plant beneficial bacteria and arbuscular mycorrhizal fungi in phytoremediation of metal-contaminated saline soils
  • Autor: Ma, Ying ; Rajkumar, Mani ; Oliveira, Rui S. ; Zhang, Chang ; Freitas, Helena
  • Assuntos: Arbuscular mycorrhizal fungi ; Helianthus annuus ; Metal-contaminated saline soils ; Phytoremediation ; Plant beneficial bacteria
  • É parte de: Journal of hazardous materials, 2019-11, Vol.379, p.120813-120813, Article 120813
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: •H. annuus was inoculated with PBB and AMF to remediate Ni contaminated saline soil.•Inoculation of PBB or PBB+AMF improved plant performance under SS, MS or SS+MS.•Microbes (singly and dually inoculated) decreased Ni and Na+ uptake under SS+MS.•PBB and AMF colonized the rhizosphere or roots of H. annuus under SS, MS or SS+MS.•Inoculation improves Ni phytostabilization, Na+ exclusion, Ni and Na+ detoxification. Phytoremediation has been considered as a promising technique to decontaminate polluted soils. However, climatic stress particularly salinity, is a potential threat to soil properties and plant growth, thus restricting the employment of this technology. The aim of this study was to access the impact of microbial inoculation on phytoremediation of nickel (Ni) contaminated saline soils using Helianthus annuus. Salt resistant plant beneficial bacterium (PBB) Pseudomonas libanensis TR1 and arbuscular mycorrhizal fungus (AMF) Claroideoglomus claroideum BEG210 were used. Inoculation of P. libanensis alone or in combination with C. claroideum significantly enhanced plant growth, changed physiological status (e.g. electrolyte leakage, chlorophyll, proline and malondialdehyde contents) as well as Ni and sodium (Na+) accumulation potential (e.g. uptake and translocation factor of Ni and Na+) of H. annuus under Ni and salinity stress either alone or in combination. These results revealed that bioaugmentation of microbial strains may serve as a preferred strategy for improving phytoremediation of metal-polluted saline soils.
  • Editor: Netherlands: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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