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

Journal of biosciences

Philippe Normand³  Faten Ghodhbane-Gtari²  Maher Gtari1²  Imen Nouioui²  Kawtar Fikri Benbrahim¹  Imed Sbissi² 

[1] Laboratoire de Biotechnologie Microbienne, Faculté des Sciences et Technologies de Fès Université Sidi Mohammed Ben Abdellah, P. O. Box 2202, Fès, Maroc$$;Laboratoire Microorganismes et Biomolécules Actives, Université de Tunis El Manar (FST) et Université de Carthage (INSAT) 2092, Tunis, Tunisia$$;Ecologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université Lyon I, Université Lyon, Villeurbanne 69622 cedex, France$$

关键词: Coriaria myrtifolia;    Frankia;    soil;    Tunisia;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown