African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5147

Table of Content: 8 January, 2014; 8(2)

January 2014

The interactions between esp, fsr, gelE genes and biofilm formation and pfge analysis of clinical Enterococcus faecium strains

Enterococcus faecium has become an increasingly important nosocomial pathogen due to formation of biofilms on several surfaces. Sixty one (61) E. faecium strains isolated from blood, urine and fecal were assessed for biofilm production, the effect of different glucose concentration on biofilm production and also the presence of esp, fsr and gelE genes. Pulsed field gel electrophoresis (PFGE) method was performed to show...

Author(s): Maryam Diani, Ozlem Gunay Esiyok, M. Nima Ariafar, Fatma Neslihan Yuksel, Evrim Gunes Altuntas and Nefise Akcelik

January 2014

Biosynthesis, optimization, purification and characterization of gold nanoparticles

Many microorganisms produce intracellular metal nanoparticles. Aqueous gold, when exposed to several actinomycetal strains, become thereby, leading to the formation of gold nanoparticles. The use of microorganisms in the synthesis of nanoparticles is emerging as an eco-friendly and exciting approach gold for recovery. Streptomyces hygroscopicus was used for the biosynthesis of gold nanoparticles. UV and visible...

Author(s): Shivaji S. Waghmare, Arvind M. Deshmukh and Zygmunt Sadowski

January 2014

Bovine Shiga toxin producing Escherichia coli O157:H7 of Bangladesh: Is it capable of causing diseases similar to clinical strains?

Escherichia coli O157:H7 is a predominant serotype of Shiga toxin producing E. coli (STEC) and is responsible for many outbreaks worldwide. Until recently, there is no comparative study on the bovine and clinical isolates as no STEC O157:H7 has been isolated from patients in Bangladesh. In the present study, the local bovine isolates were compared with a reference clinical strain to investigate whether the bovine...

Author(s): Fazle Rabbi, Mahmuda Yasmin, Jamalun Nessa, Ashikun Nabi, Fatema Moni Chowdhury, Yoshimitsu Otomo and Chowdhury Rafiqul Ahsan

January 2014

Response of forage quality in Persian clover upon co-inoculation with native Rhizobium leguminosarum symbiovar (sv.) trifoli RTB3 and plant-growth promoting Pseudomonas florescence 11168 under different levels of chemical fertilizers

The excessive use of chemical fertilizers has generated several environmental problems. In order to evaluate the effects of co-inoculation of Pseudomonas, native Rhizobium with nitrogen and phosphorus levels on forage quality in Persian clover (Trifolium rosapinatum L. cv.Br73), this study was carried out in experimental fields of Lorestan Agricultural Research Center (Borujerd station) Lorestan province, Iran in 2011....

Author(s): M. Shahverdi, B. Mirshekari, H. Asadi Rahmani, V. Rashidi and M. R. Ardakani

January 2014

Quantification of reserpine content and antibacterial activity of Rauvolfia serpentina (L.) Benth. ex Kurz

Reserpine is well known bioactive compound isolated from Rauvolfia serpentina. The aim of this study was to quantify reserpine content and evaluate the antibacterial activity of methanol extracts of R. serpentina against Salmonella typhimurium, Escherichia coli, Citrobacter freundii, Proteus vulgaris, Enterococcus faecalis and Staphylococcus aureus. Roots of R. serpentina were collected from Gadarpur and Uttarakhashi of...

Author(s): J. S. Negi, VK Bisht, A. K. Bhandari, D. S. Bisht, P. Singh and N. Singh

January 2014

Serotypes and antimicrobial resistance of invasive Streptococcus pneumoniae isolates from East Algeria (2005-2011)

Streptococcus pneumoniae is one of the most common bacterial causes of morbidity and mortality worldwide causing life threatening infections such as meningitis, pneumonia and bacteremia. Antibiotic resistance in S. pneumoniae has increased worldwide but there are few data in Algeria and more information is needed about serotype distribution of invasive S.pneumoniae isolates. From 2005 to 2011, a total of 100...

Author(s): Abla Hecini-Hannachi, Chafia Bentchouala, Abdesslem Lezzar, Kaddour Belabed, Hocine Laouar, and  Farida Smati,

January 2014

Evaluation of faecal coliform levels in the discharges from the city of El Jadida, Morocco

In order to assess the fecal coliform contents in the raw sewage from the city of El Jadida, the principal component analysis of these contents coupled with the physicochemical parameters of water (temperature, pH, electrical conductivity and total suspended solids) was carried out. The bacteriological analysis of samples taken at the level of collector SIDI DAWI of the city of El Jadida between May 2008 and June 2010...

Author(s): Youssef Salama, Mohammed Chennaoui, Mohammed Mountadar, Mohammed Rihani and Omar Assobhei

January 2014

Diversity and biopotential of endophytic actinomycetes from three medicinal plants in India

Three medicinal plants, Aloe vera, Mentha arvensis and Ocimum sanctum were explored for endophytic actinomycetes diversity, plant growth promoting and antimicrobial activity. Endophytic actinomycetes were most commonly recovered from roots (70% of all isolates) followed by stems (17.5%) and leaves (12.5%), respectively. Single genus Streptomyces ranked first (60% of all isolates) followed by Micromonospora (25%),...

Author(s): Madhurama Gangwar, Sonam Dogra, Urmil Phutela Gupta and Ravindra Nath Kharwar

January 2014

High-performance liquid chromatography (HPLC) Identification of five new phenolic compounds involved in the olive tree (Olea europea var. Sigoise) resistance to Verticillium dahliae

Verticillium wilt is a vascular disease caused by Verticillium dahliae which represents a serious threat for olive growing in Algeria. Many studies have shown the potential involvement of phenolic compounds in the reaction of plants to pathogens. Our study shows that the presence of Verticillium wilt induces a high production of polyphenols in infected olive trees compared to uninfected ones. The presence of high...

Author(s): Fatema Bensalah, Nassira Gaouar-Benyelles and Mohammed Choukri Beghdad

January 2014

Stress sensitivity assays of bacteriophages associated with Staphylococcus aureus, causal organism of bovine mastitis

Bacteriophages can provide an alternative measure for the control of Staphylococcus aureus, the major causal agent for bovine mastitis. This study looked at the sensitivity of six phages towards simulated environmental and formulation stresses. Phages Sabp-P1, Sabp-P2 and Sabp-P3 showed the most stable replication rates at increasing temperatures (45 to 70ºC), in comparison to phages Sabp-P4, Sabp-P5 and Sabp-P6....

Author(s): Iona H. Basdew and Mark D. Laing

January 2014

Antibacterial activity of the stem bark extracts of Acacia mearnsii De Wild

Antibacterial activity of four different extracts from the stem bark of Acacia mearnsii was measured against five Gram-positive and five Gram-negative bacterial strains: Staphylococcus aureus, Staphylococcus epidermidis, Bacillus cereus, Micrococcus kristinae, Streptococcus faecalis, Escherichia coli, Pseudomonas aeruginosa, Shigella flexneri, Klebsiella pneumonia and Serratia marcescens. The extracts assessed include...

Author(s): Mbolekwa B. N., Kambizi L., Songca S. P. and Oluwafemi O. S.

January 2014

Influenza seasonality affected by the 2009 pandemic episode in Senegal

In Senegal, the seasonality of influenza epidemics is well defined with a clear peak around August and September (in rainy season which occurs from July to October). Surprisingly, the first detection of the A(H1N1)pdm09 virus was in January 2010 and rapidly reached a high detection peak between January and February, indicating a real shift in the influenza seasonality in Senegal. Therefore, climatic factors, the host...

Author(s): Ndongo Dia, Ousmane M. Diop and Mbayame N. Ndiaye