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First report on the occurrence of the uncultivated cluster 2 Frankia microsymbionts in soil outside the native actinorhizal host range area

Abstract : The occurrence of uncultivated Frankia was evaluated in Tunisian soils by a plant-trapping assay using Coriaria myrtifolia seedlings. Despite the lack of this compatible host plant for more than two centuries, soil-borne Frankia cells were detected in one sampled soil as shown by the development of root nodules on 2-year-old seedlings. Based on glnA sequences, Tunisian trapped Frankia strains belong to the uncultivated cluster 2 strains that associate with other Coriaria species and also with Ceanothus, Datisca and Rosaceae actinorhizal species. This is the first report on the occurrence of Frankia cluster 2 strains in soils from areas lacking compatible host plant groups.
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https://hal-univ-lyon1.archives-ouvertes.fr/hal-02522200
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Submitted on : Friday, March 27, 2020 - 5:58:02 PM
Last modification on : Tuesday, June 16, 2020 - 11:28:03 AM

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I. Nouioui, I. Sbissi, F. Ghodhbane-Gtari, K. F. Benbrahim, Philippe Normand, et al.. First report on the occurrence of the uncultivated cluster 2 Frankia microsymbionts in soil outside the native actinorhizal host range area. Journal of Biosciences, Indian Academy of Sciences, 2013, 38 (4), pp.695-698. ⟨10.1007/s12038-013-9366-z⟩. ⟨hal-02522200⟩

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