ArticleBrazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]2021
Bradyrhizobium sp. sv. retamae nodulates Retama monosperma grown in a lead and zinc mine tailings in Eastern Morocco.
Article in Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology], 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 20 citations in OpenAlex.
- Bradyrhizobium dasycarpae sp. nov. a novel rhizobial species lacking canonical nod genes, isolated from the Moroccan endemic legume Retama dasycarpa.Antonie van Leeuwenhoek · 2026Article
- Advances in rhizobial technology: driving sustainable agriculture in the 21 st century.Archives of microbiology · 2026Review
- pH and Pb co-regulate soil bacterial communities and C/N/S Cycling processes in valley-type landfills under multi-factor interactions.Frontiers in microbiology · 2026Article
- Article
- Plant Growth of the Wild Forage Legume Genista monspessulana is Improved by Bradyrhizobium sp. sv. Genistearum in the Acidic Soils of Northern Morocco.Current microbiology · 2025Article
- Adaptations of the GenusCurrent issues in molecular biology · 2025Review
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Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aim of this work was to characterize and identify some bacteria isolated from the root nodules of Retama monosperma grown in Sidi Boubker lead and zinc mine tailings. Very few root nodules were obtained on the root nodules of R. monosperma grown in these soils. The three bacteria isolated from the root nodules were tolerant in vitro to different concentrations of heavy metals, including lead and zinc. The rep-PCR experiments showed that the three isolates have different molecular fingerprints and were considered as three different strains. The analysis of their 16S rRNA gene sequences proved their affiliation to the genus Bradyrhizobium. The analysis and phylogeny of the housekeeping genes atpD, glnII, gyrB, recA, and rpoB confirmed that the closest species was B. valentinum with similarity percentages of 95.61 to 95.82%. The three isolates recovered from the root nodules were slow-growing rhizobia capable to renodulate their original host plant in the presence of Pb-acetate. They were able to nodulate R. sphaerocarpa and Lupinus luteus also but not Glycine max or Phaseolus vulgaris. The phylogeny of the nodA and nodC nodulation genes as well as the nifH gene of the three strains showed that they belong to the symbiovar retamae of the genus Bradyrhizobium. The three strains isolated could be considered for use as inoculum for Retama plants before use in phytoremediation experiments.
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