Plant and Soil

, Volume 373, Issue 1–2, pp 339–358 | Cite as

Comparison among bacterial communities present in arenized and adjacent areas subjected to different soil management regimes

  • Camille Granada
  • Pedro Beschoren da Costa
  • Bruno Brito Lisboa
  • Luciano Kayser Vargas
  • Luciane M. P. Passaglia
Regular Article
First Online:
Received:
Accepted:

Abstract

Aims

The aims of this work were to characterize the soil bacterial communities in an arenized area in southern Brazil subjected to different management regimes through cultivation-dependent and cultivation-independent methods and to evaluate the potential of selected plant growth-promoting (PGP) bacteria to improve the growth of native Lupinus albescens plants.

Methods

Bulk soil samples from an arenized site and rhizospheric soil and roots of L. albescens grown in this arenized site as well as samples from soils of the same region outside of the arenized area and rhizospheric soil and roots of L. albescens grown in non-arenized sites were evaluated. Phosphate solubilization, indolic compound and siderophore production abilities of the isolates were screened and compared. Some isolates were selected for in vivo plant growth promotion in greenhouse experiment.

Results

The samples from the arenized area presented less microbial biomass and less diverse bacterial communities compared with those from non-arenized areas. The PGP characteristics produced by the bacterial isolates showed differences among arenized and non arenized areas. A growth chamber experiment with L. albescens showed that phosphate-insoluble conditions coupled with bacterial inoculation resulted in the best PGP effect.

Conclusions

Culture-dependent and culture-independent methods showed converging results regarding diversity indices and the rhizospheric environments increased bacterial diversity and biomass when compared to bulk soils. The PGP traits analyzed in this work were affected by environmental conditions.

Keywords

Plant growth-promoting bacteria Lupinus albescens Desertification process 
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Notes

Acknowledgments

The authors are grateful to Drs. Flávio Eltz and Sandro Giacomini from the Universidade Federal de Santa Maria, RS, for the Lupinus samples. This work was financed by a grant and fellowships from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq/Brazil), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES/Brazil) and Instituto Nacional de Ciência e Tecnologia (INCT) da Fixação Biológica do Nitrogênio (Brazil).

Supplementary material

11104_2013_1796_MOESM1_ESM.docx (19 kb)
ESM 1 (DOCX 18 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Camille Granada
    • 1
  • Pedro Beschoren da Costa
    • 1
  • Bruno Brito Lisboa
    • 2
  • Luciano Kayser Vargas
    • 2
  • Luciane M. P. Passaglia
    • 1
  1. 1.Departamento de Genética, Instituto de BiociênciasUniversidade Federal do Rio Grande do Sul (UFRGS)Porto AlegreBrazil
  2. 2.Fundação Estadual de Pesquisa Agropecuária (FEPAGRO)Porto AlegreBrazil

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