Positive effects of plant association on rhizosphere microbial communities depend on plant species involved and soil nitrogen level - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Soil Biology and Biochemistry Year : 2017

Positive effects of plant association on rhizosphere microbial communities depend on plant species involved and soil nitrogen level

Barbara Pivato
David Bru
  • Function : Author
  • PersonId : 1144376
  • IdHAL : david-bru
Hugues Busset
  • Function : Author
  • PersonId : 1203984
Florence Deau
  • Function : Author
  • PersonId : 1206374
Annick Matejicek
  • Function : Author
  • PersonId : 1203985
Laurent Philippot
Delphine Moreau

Abstract

How plant species associations affect the rhizosphere microbiota, in comparison to each plant species, has been overlooked. Here we investigated how bi-species plant associations affect total bacterial and N-cycling microbial communities (nitrate reducers and ammonia-oxidizers), as an example of functional communities, at low and high soil N levels. At low N level, the total bacterial abundance in the rhizosphere of the bi-species associations was significantly higher than that of either plant on its own for half of the bi-species associations. For the other associations, the bacterial abundance was not different from the corresponding mono-species cultures. The abundance of several N-cycling guilds was also enhanced by some of the bi-species associations with increases of up to 125% and no negative effects were recorded, which highlights the importance of plant diversity in agro-ecosystems.
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hal-02619943 , version 1 (25-05-2020)

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Barbara Pivato, David Bru, Hugues Busset, Florence Deau, Annick Matejicek, et al.. Positive effects of plant association on rhizosphere microbial communities depend on plant species involved and soil nitrogen level. Soil Biology and Biochemistry, 2017, 114, pp.1-4. ⟨10.1016/j.soilbio.2017.06.018⟩. ⟨hal-02619943⟩
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