Journal Article

PreJuSER-61643

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Significance of treated agrowaste residue and autochthonous inoculates (Arbruscular mycorrhizal fungi and Bacillus cereus) on bacterial community structure and phytoextraction to remediate soils contaminated with heavy metals

Azcón, R. ; Medina, A.FZJ* ; Roldán, A. ; Biró, B. ; Vivas, A.

2009
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.chemosphere.2008.12.029

Abstract: In this study, we analyzed the impact of treatments such as Aspergillus niger-treated sugar beet waste (SB), PO4(3-) 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 PO4(3-) 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 PO4(3-) 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.

Keyword(s): Agriculture (MeSH) ; Aspergillus niger: metabolism (MeSH) ; Bacillus cereus: metabolism (MeSH) ; Bacteria: metabolism (MeSH) ; Biodegradation, Environmental (MeSH) ; Biodiversity (MeSH) ; Fertilizers (MeSH) ; Metals, Heavy: analysis (MeSH) ; Mycorrhizae: metabolism (MeSH) ; Plant Shoots: growth & development (MeSH) ; Plants: growth & development (MeSH) ; Soil (MeSH) ; Soil Microbiology (MeSH) ; Soil Pollutants: analysis (MeSH) ; Symbiosis (MeSH) ; Trifolium: growth & development (MeSH) ; Fertilizers ; Metals, Heavy ; Soil ; Soil Pollutants ; J ; Mycorrhizal-bacterial inoculation (auto) ; Agrowaste residue (auto) ; Phytoextraction (auto) ; Biodiversity (auto)

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Research Program(s):

1. Terrestrische Umwelt (P24)

Appears in the scientific report 2009

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