M. AHNIA Hadjira

MCB

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Department

Departement of Nature and life sciences

Research Interests

ECOLOGIE ET ENVIRONNEMENT BIOTECHNOLOGIE BIOLOGIE MOLECULAIRE ECOLOGIE MICROBIENNE PCR, BIOTECHNOLOGIE ET BIOINFORMATIQUE

Contact Info

University of M'Sila, Algeria

Email : hadjira.ahnia@univ-msila.dz

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Recent Publications

2018-07-01

Bradyrhizobium algeriense sp. nov., a novel species isolated from effective nodules of Retama sphaerocarpa from Northeastern Algeria

We have characterized genetic, phenotypic and symbiotic properties of bacterial strains previously isolated from nitrogen-fixing nodules of Retama sphaerocarpa from Northern Algeria. Phylogenetic analyses of 16S rRNA genes and three concatenated housekeeping genes, recA, atpD and glnII, placed them in a new divergent group that is proposed to form a new Bradyrhizobium species, Bradyrhizobium algeriense sp. nov. (type strain RST89T, LMG 27618 and CECT 8363). Based on these phylogenetic markers and on genomic identity data derived from draft genomic sequences, Bradyrhizobium valentinum LmjM3T, Bradyrhizobium lablabi CCBAU 23086T, Bradyrhizobium retamae Ro19T, and Bradyrhizobium jicamae PAC68T are the closest relatives of B. algeriense RST89T, with sequence identities of 92–94% and Average Nucleotide Identities (ANIm) under 90%, well below the 95–96% species
Citation

M. AHNIA Hadjira, (2018-07-01), "Bradyrhizobium algeriense sp. nov., a novel species isolated from effective nodules of Retama sphaerocarpa from Northeastern Algeria", [national] Systematic and applied microbiology 41 , Urban & Fische

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2014-04-23

Cytisus villosus from Northeastern Algeria is nodulated by genetically diverse Bradyrhizobium strains

Fifty-one rhizobial strains isolated from root nodules of Cytisus villosus growing in Northeastern Algeria were characterized by genomic and phenotypic analyses. Isolates were grouped into sixteen different patterns by PCR-RAPD. The phylogenetic status of one representative isolate from each pattern was examined by multilocus sequence analyses of four housekeeping genes (16S rRNA, glnII, recA, and atpD) and one symbiotic gene (nodC). Analysis of 16S rRNA gene sequences showed that all the isolates belonged to the genus Bradyrhizobium. Phylogenetic analyses based on individual or concatenated genes glnII, recA, and atpD indicated that strains cluster in three distinct groups.
Citation

M. AHNIA Hadjira, (2014-04-23), "Cytisus villosus from Northeastern Algeria is nodulated by genetically diverse Bradyrhizobium strains", [national] Antonie van Leeuwenhoek , Springer International Publishing Switzerland 2014

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