African journal of microbiology research Impact Factor & Information

Publisher: Academic Journals

Journal description

Current impact factor: 0.54

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2011 Impact Factor 0.539
2010 Impact Factor 0.528
2009 Impact Factor 0.407
2008 Impact Factor 0.409

Impact factor over time

Impact factor
Year

Additional details

5-year impact 0.56
Cited half-life 1.90
Immediacy index 0.04
Eigenfactor 0.00
Article influence 0.07
ISSN 1996-0808

Publisher details

Academic Journals

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Creative Commons Attribution License
    • Eligible UK authors may deposit in OpenDepot
    • Publisher's version/PDF may be used
    • Published source must be acknowledged
    • All titles are open access journals
    • Publisher last contacted on 11/10/2014
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Lentil (Lens culnaris Medik.) is an invaluable source of dietary protein for the majority of Ethiopian population. The low availability of phosphorus is one of the major soil related stresses that limit the production of this crop. This study was aimed at isolation and characterization of phosphate solubilizing bacteria from lentil growing areas of Ethiopia and evaluating their effects on growth of this crop under greenhouse conditions. In total, 41 phosphate solubilizing bacterial strains were isolated from lentil rhizosphere and characterized using biochemical tests and 16S rDNA sequence analysis. The results showed the presence of genera Acinetobacter, Agrobacterium, Bacillus, Burkholderia, Chryseomonas, Enterobacter, Pseudomonas, Ralstonia and Sphingomonas. Phosphate solubilzing efficiencies of these isolates were evaluated in liquid medium using different insoluble P-sources and the result indicated that they released considerable amount of phosphates from tricalcium phosphate, rock phosphate and bone meal. Besides, some of these isolates exhibited multiple plant growth promoting characteristics such as indole acetic acid production and growth inhibition of Fusarium oxysporum under in vitro conditions. The effects of inoculation of Enterobacter kobei (PSBL5), Bacillus subtilis (PSBL21), Enterobacter species (PSBL26), Bacillus species (PSBL31) and Pseudomonas fluorescence (PSBL37) on lentil growth, nodulation, N and P content of shoot were evaluated under a greenhouse conditions and the results showed that these features were significantly increased over uninoculated control plants. Based on the results of this study, we conclude that lentil rhizosphere soil from producing areas of Ethiopia harbor diverse phosphate solubilizing bacterial strains with excellent phosphate solubilization and plant growth promotion ability. Thus, most of the promising strains should be tested in the field conditions under different agroecology of the country.
    African journal of microbiology research 07/2015;
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    ABSTRACT: The aim of this research work was to prepare rock phosphate enriched compost using low-grade mineral such as rock phosphate (RP) mixed with rice straw and Aspergillus awamori and to study their effect on microbial biomass phosphorus (MBP), phosphatase activity and phosphorus (P) fractions in a wheat-soybean cropping system. The experiment was carried out in a randomized block design with four treatments namely, control, recommended dose of NPK fertilizers (100% RDF), rock phosphate enriched compost (RPEC) at the rate of (5 t ha-1 and 50% RDF + Rock phosphate enriched compost (RPEC) at 5 t ha-1. Application of RPEC at 5 t ha-1 along with 50% recommended dose of chemical fertilizers (RDF) significantly improved microbial biomass P (MBP) (5.62 and 4.28 mg kg-1 soil) and alkaline phosphatase activity (194.0 and 174.0 μg PNP g-1 soil h-1) in surface (0-15 cm) and sub-surface (15-30 cm) soil respectively, than unfertilized control plot after harvest of wheat. The magnitude of changes of P fractions as well as microbial activities was higher in surface soil than sub-surface soil. Data generated from the field study revealed that phosphorus (P) fractions significantly increased due to application of RPEC either alone or in combination of chemical fertilizers over unfertilized control plot. Application of RPEC plus chemical fertilizers significant increased Olsen P compared to unfertilized control plot after harvest of wheat and soybean. Treatment T4 increased by 68.8 and 58.7% higher Olsen-P over control at 0-15 and 15-30 cm soil depth, respectively after wheat harvest.
    African journal of microbiology research 06/2015;
  • [Show abstract] [Hide abstract]
    ABSTRACT: The present study was carried out to evaluate the effect of different oils (lemongrass, neem, karanj, zinger, eucalyptus and patchouli oils), different plant product extracts (garlic, zinger, false ashoka and datura) and different antagonistic microorganisms (different species of Trichoderma spp., Bacillus sp. and Pseudomonas sp.) on grey blight of tea, Pestalotiopsis theae. Results reveal that eucalyptus oil and neem oil (0.05%) showed 98.1 and 94.3% inhibition of mycelial growth over the control, respectively. Although, both of them at 0.1% showed 100% inhibition for the pathogen. Similarly, plant extract garlic and datura showed 98.2 and 95.4% inhibition of mycelial growth over control. Among the different antagonistic agents, Trichoderma viride showed 74.3% inhibition of mycellial growth over the control. Among chemical fungicide, bavistin showed 100% inhibition over control. The various antifungal extracts showed inhibitory/fungicidal effect against grey blight of tea. These could serve as sources for development of new antifungal agent.
    African journal of microbiology research 05/2015; 9(18):1263-1267. DOI:10.5897/AJMR2015.7391
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    ABSTRACT: In Nigeria, quinolones and β-lactam antibiotics are widely used as broad-spectrum antibiotics to treat infections caused by various Gram-negative pathogens. The outer membrane is the major permeability barrier limiting target access to quinolones and other drugs in Gram-negative bacteria. This study aimed to identify the role of outer membrane porins (OMPs) and uptake in fluoroquinolone (FQ) and β-lactam drugs accumulation. In total, 134 non-duplicate, Gram-negative bacilli isolates of 13 species from different hospitals were investigated for susceptibility to a panel of antibiotics, including loss of outer membrane porins and measuring active efflux. The minimum inhibitory concentrations (MIC) results showed level of resistance to many antibiotics was extremely high having MIC90 value of 256 μg/ml or higher for all drugs, most importantly fluorquinolones, ciprofloxacin; sparfloxacin or third generation cephalosporin, ceftazidime; ceftriaxone. SDS-PAGE revealed different outer membrane porin (OMP) profiles on the basis of relative mobility among the strains. The majority of the isolates lack OMPs. The steady-state concentration of drug taken up by the isolates was measured; most of the strains accumulate less bis-benzimidine than the control strain, Salmonella enterica L354. The isolates from University College Hospital, Ibadan accumulate fewer drugs and they are more resistant with high minimum inhibitory concentrations when compared with the rests of the hospitals. Active efflux either singly or in tandem with OMPs alterations could be responsible for the low accumulation of fluoroquinolone and β-lactam antibiotics seen in this study and their increased resistance to both important classes of antibiotics.
    African journal of microbiology research 04/2015; 9(15):1082-1088. DOI:10.5897/AJMR2013.5573