Published December 4, 2012 | Version v1
Journal article Open

Long-term phosphorus fertilisation increased the diversity of the total bacterial community and the phoD phosphorus mineraliser group in pasture soils

Creators

  • 1. University College Cork, National University of Ireland, Cork, Ireland
  • 2. Microbiology Department, University College Cork, National University of Ireland, Cork, Ireland
  • 3. Environmental Research Institute, University College Cork, National University of Ireland, Cork, Ireland
  • 4. Environment Research Centre, Teagasc, Johnstown Castle, Ireland

Description

This study investigated the bacterial communities in a spring barley monoculture site subjected to two different input regimes for over 12 years: a conventional chemical/fertiliser regime, and a reduced input regime. A culture independent approach was performed to compare the bacterial communities through 16S rRNA gene PCR-DGGE. PCO analysis revealed that the rhizosphere has a strong structuring effect on the bacterial community. Moreover, high inputs of agrichemicals lead to an increase of phosphorus level in the soil and a concomitant reduction of the bacterial diversity. These results may help to evaluate the environmental risks associated with agrichemical usage.

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Long-term_agrichemical_use_leads_to_alterations_in_bacterial.pdf

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Additional details

Funding

MICRO B3 – Marine Microbial Biodiversity, Bioinformatics and Biotechnology 287589
European Commission