Record ID No. |
1813 |
Author(s) |
Azcon R., Medina A., Roldan A., Biro B., Vivas A. , 2009 |
Affiliation |
CSIC, Estac Expt Zaidin, Dept Microbiol Suelo & Sistemas Simbiot, Prof Albareda 1, E-18008 Granada, Spain |
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 |
Source. Vol.(no):Page |
Chemosphere. 75(3): 327-334p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Country |
Spain, Europe |
Abstracts |
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. |