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Isolation and identification of the most efficient plant growth-promoting bacteria associated with canola (Brassica napus)

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Abstract

 Thirteen of the most abundant Gram-negative bacteria which are able to grow in N-depleted culture conditions were isolated from the rhizoplane and endorhizosphere of canola (Brassica napus) and identified by 16S rDNA sequence analysis. Eight of these bacteria induced a significant increase in root dry weight ranging from 11 to 52%. Phylogenetic positioning based on 16S rDNA sequences indicated that at least four genera are represented, Pseudomonas, Variovorax, Agrobacterium and Phyllobacterium. The most important direct plant growth-promoting-rhizobacteria effect was found with both isolates belonging to the Phyllobacterium.

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Authors and Affiliations

  1. L.E.M.S. UMR-CNRS 5557, Laboratoire d'Ecologie Microbienne du Sol, Bat. 741, 4eme et., Université Claude Bernard Lyon I, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne cedex, France e-mail: nalin@biomserv.univ-lyon1.fr Tel.: +33-4-72431110 Fax: +33-4-72431223, , , , , , FR

    R. Nalin & R. Bally

  2. L.S.T.M. Laboratoire des Symbioses Tropicales et Méditérannéennes, INRA/IRD/CIRAD/AGRO-M TA10/J Campus International de Baillarguet 34398 Montpellier cedex 5, France, , , , , , FR

    H. Bertrand & J.-C. Cleyet-Marel

Authors
  1. H. Bertrand
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  2. R. Nalin
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  3. R. Bally
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  4. J.-C. Cleyet-Marel
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Received: 18 April 2000

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Bertrand, H., Nalin, R., Bally, R. et al. Isolation and identification of the most efficient plant growth-promoting bacteria associated with canola (Brassica napus). Biol Fertil Soils 33, 152–156 (2001). https://doi.org/10.1007/s003740000305

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  • DOI: https://doi.org/10.1007/s003740000305

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