the primary objective of this research was to identify the rhizobial symbionts within nodules of L. angustifolius plants growing in the Northeast area of the Algerian Tarf region. Phylogenetic diversity of Bradyrhizobium strains isolated from root nodules of Lupinus angustifolius grown wild in the Northeast of Algeria

Sequence analysis showed that the isolates belonged to B. lupini, B. cytisi, B. japonicum and B. diazoefficiens. PCR amplification was used to look for the symbiotic gene nodC, and it was studied by sequencing and phylogenies.