Nodulation of by in an Abandonned Lead Mine Soils in Eastern Morocco.

Millions tons of lead and zinc wastes from the abandoned Touissit mine are stored in the open air as dikes in the vicinity of the villages in Eastern Morocco and pose a real danger to both the environment and local populations. To prevent the movement of minerals to the nearby villages and limit the damages to the environment and health, we proposed the nitrogen-fixing leguminous shrub , as a model plant to use for phytostabilization experimentations. This plant species is known by its ability to grow in hard climatic conditions and in heavy metals contaminated soils.

Ensifer fredii symbiovar vachelliae nodulates endemic Vachellia gummifera in semiarid Moroccan areas.

The purpose of this work was to study the genetic diversity of the nodule-forming bacteria associated with native populations of Vachellia gummifera growing wild in Morocco. The nearly complete 16S rRNA gene sequences from three selected strains, following ARDRA and REP-PCR results, revealed they were members of the genus Ensifer and the sequencing of the housekeeping genes recA, gyrB, dnaK and rpoB, and their concatenated phylogenetic analysis, showed that the 3 strains belong to the species E. fredii.

Astragalus algarbiensis is nodulated by the genistearum symbiovar of Bradyrhizobium spp. in Morocco.

Astragalus algarbiensis is a wild herbaceous legume growing in Maamora, the most important cork oak forest in northern Africa. It is a plant of great importance as fodder in silvopastoral systems, and in the restoration of poor and degraded soils. The purpose of this study was to describe the biodiversity of rhizobia nodulating this plant and determine their identity.