Isolation and characterization of non-Frankia actinobacteria from root nodules of Alnus glutinosa, Casuarina glauca and Elaeagnus angustifolia

• DOI: 10.1007/s13199-009-0029-7
• Publication Date: 2009-12-01T11:21:20Z
• Authors: Faten Ghodhbane-G...; Imene Essoussi; Mayssa Chattaoui; Bessem Chouaia; Atef Jaouani; Daniele Daffonchio; Abdellatif Boudabous; Maher Gtari
• Keywords: Frankia; Casuarina; Actinorhizal plant; Alnus glutinosa; Micromonospora

Actinobacterial isolates randomly obtained on nitrogen-free BAP medium from surface sterilized root nodules of Alnus glutinosa, Casuarina glauca and Elaeagnus angustifolia sampled from fields were reported. They were assigned on the basis of partial 16S rRNA sequences to Micromonospora, Nocardia and Streptomyces genera. The isolates have been screened for hydrolytic activities, indole acetic acid (IAA) and siderophores production, phosphate solubilization and antagonistic activities. Results suggest putative traits as plant growth promoting bacteria proprieties of the isolates that occur in unique association in root nodules of the three analysed actinorhizal host species.