Significance of treated agrowaste residue and autochthonous inoculates (Arbuscular mycorrhizal fungi and Bacillus cereus) on bacterial community structure and phytoextraction to remediate soils contaminated with heavy metals

Rosario Azcón, Almudena Medina, Antonio Roldán, B. Bíró, Astrid Vivas

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

In this study, we analyzed the impact of treatments such as Aspergillus niger-treated sugar beet waste (SB), PO43 - fertilization and autochthonous inoculants [arbuscular mycorrhizal (AM) fungi and Bacillus cereus], on the bacterial community structure in a soils contaminated with heavy metals as well as, the effectiveness on plant growth (Trifolium repens). The inoculation with AM fungi in SB amended soil, increased plant growth similarly to PO43 - addition, and both treatments matched in P acquisition but bacterial biodiversity estimated by denaturing gradient gel electrophoresis of amplified 16S rDNA sequences, was more stimulated by the presence of the AM fungus than by PO43 - fertilization. The SB amendment plus AM inoculation increased the microbial diversity by 233% and also changed (by 215%) the structure of the bacterial community. The microbial inoculants and amendment used favoured plant growth and the phytoextraction process and concomitantly modified bacterial community in the rhizosphere; thus they can be used for remediation. Therefore, the understanding of such microbial ecological aspects is important for phytoremediation and the recovery of contaminated soils.

Original languageEnglish
Pages (from-to)327-334
Number of pages8
JournalChemosphere
Volume75
Issue number3
DOIs
Publication statusPublished - Apr 2009

Fingerprint

Bacillus cereus
Sugar beets
Bacterial Structures
Beta vulgaris
sugar beet
Heavy Metals
Fungi
Heavy metals
community structure
Soil
fungus
heavy metal
Soils
Fertilization
inoculation
Agricultural Inoculants
Growth
Trifolium
Denaturing Gradient Gel Electrophoresis
Rhizosphere

Keywords

  • Agrowaste residue
  • Biodiversity
  • Mycorrhizal-bacterial inoculation
  • Phytoextraction

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemistry(all)

Cite this

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title = "Significance of treated agrowaste residue and autochthonous inoculates (Arbuscular mycorrhizal fungi and Bacillus cereus) on bacterial community structure and phytoextraction to remediate soils contaminated with heavy metals",
abstract = "In this study, we analyzed the impact of treatments such as Aspergillus niger-treated sugar beet waste (SB), PO43 - fertilization and autochthonous inoculants [arbuscular mycorrhizal (AM) fungi and Bacillus cereus], on the bacterial community structure in a soils contaminated with heavy metals as well as, the effectiveness on plant growth (Trifolium repens). The inoculation with AM fungi in SB amended soil, increased plant growth similarly to PO43 - addition, and both treatments matched in P acquisition but bacterial biodiversity estimated by denaturing gradient gel electrophoresis of amplified 16S rDNA sequences, was more stimulated by the presence of the AM fungus than by PO43 - fertilization. The SB amendment plus AM inoculation increased the microbial diversity by 233{\%} and also changed (by 215{\%}) the structure of the bacterial community. The microbial inoculants and amendment used favoured plant growth and the phytoextraction process and concomitantly modified bacterial community in the rhizosphere; thus they can be used for remediation. Therefore, the understanding of such microbial ecological aspects is important for phytoremediation and the recovery of contaminated soils.",
keywords = "Agrowaste residue, Biodiversity, Mycorrhizal-bacterial inoculation, Phytoextraction",
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AU - Azcón, Rosario

AU - Medina, Almudena

AU - Roldán, Antonio

AU - Bíró, B.

AU - Vivas, Astrid

PY - 2009/4

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AB - In this study, we analyzed the impact of treatments such as Aspergillus niger-treated sugar beet waste (SB), PO43 - fertilization and autochthonous inoculants [arbuscular mycorrhizal (AM) fungi and Bacillus cereus], on the bacterial community structure in a soils contaminated with heavy metals as well as, the effectiveness on plant growth (Trifolium repens). The inoculation with AM fungi in SB amended soil, increased plant growth similarly to PO43 - addition, and both treatments matched in P acquisition but bacterial biodiversity estimated by denaturing gradient gel electrophoresis of amplified 16S rDNA sequences, was more stimulated by the presence of the AM fungus than by PO43 - fertilization. The SB amendment plus AM inoculation increased the microbial diversity by 233% and also changed (by 215%) the structure of the bacterial community. The microbial inoculants and amendment used favoured plant growth and the phytoextraction process and concomitantly modified bacterial community in the rhizosphere; thus they can be used for remediation. Therefore, the understanding of such microbial ecological aspects is important for phytoremediation and the recovery of contaminated soils.

KW - Agrowaste residue

KW - Biodiversity

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KW - Phytoextraction

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