African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5233

Table of Content: 27 September, 2012; 6(37)

September 2012

Prospectus of phosphate solubilizing microorganisms and phosphorus availability in agricultural soils: A review

Phosphate solubilizing microorganisms (PSMs) offer an ecologically acceptable mean for converting insoluble phosphate to soluble forms making them available for plants to absorb. Several bacterial strains (Pseudomonas, Bacillus, Rhizobium and Enterobacter) and fungal strains (Aspergillus and Penicillium) have so far been recognized as powerful phosphate solubilizers. Insoluble phosphates...

Author(s): Buddhi Charana Walpola and Min-Ho Yoon

September 2012

Chitosan as an alternative to control phytopathogenic fungi on fruits and vegetables in Mexico

The control of phytopathogenic fungi has been carried out by synthetic chemical fungicides for many years. However, some studies showed the potential risk they present to the environment and human health. The use of chitosan as an alternative to control phytopathogenic fungi during postharvest is important particularly in Mexico because this polymer exhibits antifungal activity against several important pathogens...

Author(s): Miguel Gerardo Velázquez-del Valle, Ana Niurka Hernández-Lauzardo, María Guadalupe Guerra-Sánchez and Gloria Isabel Mariaca-Gaspar

September 2012

Effects of probiotics and antibiotics on diversity and structure of intestinal microflora in broiler chickens

Probitics and antibiotics are all used as growth promoters in domestic animal breeding and poultry raising. In the present study, the effects of probiotics and antibiotics on structure and diversity of the intestinal microflora of broiler 817 was investigated. Ammonia and sulfured hydrogen in fecal were detected. Then the intestinal microflora was analyzed by the pour plate method and polymerase chain...

Author(s): Kun Chen#, Jie Gao#, Junxun Li, Ying Huang, Xuegang Luo and Tongcun Zhang

September 2012

Production of k-carrageenase by Cellulosimicrobium cellulans isolated from Egyptian Mediterranean coast

The screening for isolates was done from different sources: sea water, sediment and algal tissue. Only two strains showed the capability of degrading k-carrageenan. Both strains were identified genetically using 16S rDNA. The isolates were classified to beCellulosimicrobium cellulans and Isoptericola sp. Morphological and biochemical properties for C. cellulans were selected for the study....

Author(s): Amany S. Youssef , Ehab A. Beltagy, Mohamed A. El-Shenawy and Samy A. El-Assar

September 2012

Changes in total phenol, total protein and peroxidase activities in melon (Cucumis melo L.) cultivars inoculated with Rhizoctonia solani

The intensive exploration of melon crops in Sistan region favors the occurrence of root diseases such as the Rhizoctonia canker, caused by Rhizoctonia solani. In this study, eighteen melon cultivars were challenged against the pathogen aiming at selecting those potentially useful for breeding programs and/or integrated disease management. Seeds were planted in infested soil (50 mg of colonized...

Author(s): Mohammad Salari, Naser Panjekeh, Zahrah Nasirpoor and Javad Abkhoo

September 2012

Molecular diversity analysis of planctomycete-like bacteria in inosine fermentation and municipal wastewater treatment systems

In this study, the diversity of planctomycete-like bacteria in an inosine fermentation and amunicipal wastewater treatment plants was investigated by denaturing gradient gel electrophoresis (DGGE) of nested polymerase chain reaction (nested PCR) amplified 16S rRNA gene fragments using planctomycete-specific forward primer and a bacteria universal reverse primer. The bacterial community...

Author(s): Hao Zhang, Ying Xu, Yifeng Ding, Qingxiang Yang, Siwei Ren, Xueling Li, Xuanyu Chen, Yuanyuan Xu and Hongxin Hao

September 2012

Combined effect of ultrasound and selected essential oil constituents on Escherichia coli O157:H7 and Listeria monocytogenes reduction in orange juice

The purpose of this study was to determine the combined effects of 20 kHz ultrasound (US) and selected essential oil (EO) constituents (eugenol, linalool and cinnamaldehyde:200, 400, 800 and 1000 µl/l) on the reduction of Escherichia coli O157:H7 and Listeria monocytogenes in orange juice (OJ) at different temperatures. Combined effect of citric acid and US on the...

Author(s): Saniye Utkun and Buket Kunduhoglu

September 2012

Intra population diversity in Rhizocotonia bataticola causing dry root rot of chickpea (Cicer arietinum L.) in India

Fifty isolates of dry root rot pathogen Rhizoctonia bataticola collected from different agro-climatic zones in India were evaluated for the degree of subdivision in isolates level. The isolates showed variability in pathogenicity test. Genetic characteristics were analyzed based on the sequence of the rDNA-internal transcribed spacer (ITS) region. The phylogenetic tree based on rDNA-ITS analysis showed that...

Author(s): Mamta Sharma#, Raju Ghosh#, Tilak R. Sharma and Suresh Pande

September 2012

Diversity among some Egyptian isolates of Rhizoctonia solani based on anastomosis grouping, molecular identification and virulence on common bean

Nine isolates of Rhizoctonia solani were obtained from different plant types (common bean, broad bean, bell pepper, tomato and cucumber). The obtained isolates were assigned to AG according to hyphal anastomosis. Of these, six isolates belonged to AG 2-2 IIIB, while the other three isolates belonged to AG 4 HG-I. Molecular identification using18S-rRNA gene showed that all the isolates...

Author(s): Rashad Y. M., Abdel-Fattah G. M., Hafez E. E. and El-Haddad S. A.

September 2012

Epidemiology of cutaneous mycosis in the Medina region of Saudi Arabia correlated with studying the effect of light-induced gold nanoparticles on the growth of dermatophytes in vitro

A total of 145 clinical cases were diagnosed, 137 were found to be positive cases of cutaneous fungal infection. Among all one hundred and thirty seven positive cases,superficial mycoses cases of tinea versicolor caused by Malassezia furfur were found to be the most frequent representing (42.3%) of the total, the remaining (51.1%) and (6.6%) were cases of cutaneous mycoses caused by dermatophytes...

Author(s): Ahmed Medhat Mohsen Hanafy, Amira Abdu El-Adly, Abdul Aziz Qublan Alsarani, Mohamed Ashfaq and Al Zahraa Ahmed Karam El-Din

September 2012

Isolation and characterization of lytic phage against Lactococcus lactis RP359, kem-buk-nud starter culture

Starter culture-infecting bacteriophages have become a major problem of food fermentation because of their ability to ruin fermentation. This study aims to isolate and characterize a phage having ability to infect Lactococcus lactis RP359, a starter culture of kem-buk-nud, a traditional Thai fermented food. A lytic phage fRP359 was isolated from a kem-buk-nud sample and produced clear plaques of 1 to 1.5...

Author(s): Parichat Phumkhachorn and Pongsak Rattanachaikunsopon

September 2012

Influence of abiotic stress on β-D-glucosidase activity of two typical Oenococcus oeni strains in China

β-D-Glucosidase is one of the most interesting glycosidases for hydrolysis of glycoconjugated precursors to release active aromatic compounds in musts and wines. SD-2a and 31MBR are two typical Oenococcus oeni strains widely used in winemaking in China. Up to now, there is still limited information regarding the β-D-glucosidase activity of the two strains. β-D-Glucosidase activity of...

Author(s): LI Ya-hui, FAN Ming-tao, RAN Jun-jian, ZHANG Guo-qiang and LIU Yan-lin