Elsevier

Rhizosphere

Volume 17, March 2021, 100297
Rhizosphere

Root-associated Burkholderia spp. on the hairy vetch (Vicia villosa Roth.) cover crop vary depending on soil history of use

https://doi.org/10.1016/j.rhisph.2020.100297Get rights and content

Abstract

Vicia villosa is a cover crops commonly introduced in the rotation schema of sustainable agricultural practices. As a leguminous crop, Vicia villosa interacts with rhizobia to fix atmospheric nitrogen, modifying the nutritional status of consecutive crops. The interaction with other probiotic bacteria is, however, unknown. Burkholderia spp. are dominant members of rhizosphere, providing biological functions to promote plant growth. To recognize the interaction of the hairy vetch with the relevant plant related Burkholderia spp. species we performed microcosm experiments with soils having different history of use. Results showed that populations size of Burkholderia spp. on Vicia roots were similar for all treatments irrespective of land uses history. However, Vicia villosa was able to recruited different diversity of root associated Burkholderia spp. species, ressembling the populations structure in the bulk soils. Root-associated Burkholderia spp. were mainly enriched in strains with already recognized interactions with plants. These results suggest that bulk soils with a history of crop rotation instead of monocropping contribute with a higher diversity of Burkholderia spp. species capable of interacting with hairy vetch roots.

Section snippets

Declaration of competing interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Acknowledgements

This work was supported by the CONICET (National Scientific and Technical Research Council, grant PIP 2014/0561). All authors are members of Research Career at CONICET, Argentina. Dr. Donald F. Haggerty, a retired academic career investigator and native English speaker, edited the final version of the manuscript.

References (26)

  • D.M. Finney et al.

    Living cover crops have immediate impacts on soil microbial community structure and function

    J. Soil Water Conserv.

    (2017)
  • L.F.L.E. Gentry et al.

    Apparent red clover nitrogen credit to corn: evaluating cover crop introduction

    Agron. J.

    (2013)
  • A. Klonowska et al.

    Transcriptomic profiling of Burkholderia phymatum STM815, Cupriavidus taiwanensis LMG19424 and Rhizobium mesoamericanum STM3625 in response to Mimosa pudica root exudates illuminates the molecular basis of their nodulation competitiveness and symbiotic ev

    BMC Genom.

    (2018)
  • View full text