African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Table of Content: 23 August, 2012; 11(68)

August 2012

Micropropagation of Anthurium andreanum cv. Terra

Anthurium anderanum cv. Terra from family Araceae, is a plant with a high commercial value. Conventional propagation of this plant performed via suckers and seeds planting that nowadays missed its application have been abolished. This study aimed to establish producible protocol for indirect in vitro regeneration of the Terra genotype. For this purpose, the effects of 16 different...

Author(s): Farsi M., Taghavizadeh Yazdi ME. and Qasemiomran V    

August 2012

In vitro culture method of powdery mildew (Oidium heveae Steinmann) of Hevea brasiliensis

A method for culturing powdery mildew (Oidium heveae) from isolated leaves ofHevea brasiliensis was evaluated, which included three steps: Leaves and fungi selection, nutrient solution and culture dish preparation, fungi inoculation and culture. The culture time and produced conidia number were considered as decision index. We tested the influence of micro components of nutrient solution including...

Author(s): Min Tu, Haibin Cai, Yuwei Hua, Aihua Sun and Huasun Huang    

August 2012

Effects of cold-stratification, gibberellic acid and potassium nitrate on seed germination of yellow gentian (Gentiana lutea L.)

The purpose of this study was to show the effect of cold-stratification, gibberellic acid and potassium nitrate on seed germination of yellow gentian (Gentiana lutea L.). The seeds of natural yellow gentian populations of the Albanian Alps (Kosovo) were collected in September 2010. Seeds placed in filter paper (plastic bag) and in mixture of sand-soil were cold-stratified (2±1°C) for 72 days. The effect...

Author(s): Fadil Millaku, Bekim Gashi, Kasamedin Abdullai, Sali Aliu, Mirsade Osmani, Elez Krasniqi, Valbona Mata and Agim Rysha  

August 2012

Fulvic acid affects pepper antioxidant activity and fruit quality

Fulvic acid has been considered as a valuable fertilizer for sustainable agriculture. The present investigation was undertaken to evaluate the effect of fulvic acid (FA) on antioxidant compounds and fruit quality of pepper under field conditions. Plants were grown in the Department of Horticulture Farm, Ferdowsi University of Mashhad, Iran (latitude 36° 17′ N, longitude 59° 35′ E and 985 m...

Author(s): M. H. Aminifard, H. Aroiee, H. Nemati, M. Azizi and Hawa Z. E. Jaafar  

August 2012

Role of antioxidant scavenging enzymes and extracellular polysaccharide in pathogenicity of rice bacterial blight pathogen Xanthomonas oryzae pv. oryzae

In the present work, we studied the role of antioxidant scavenging enzymes of plant pathogenic bacteria: catalase, ascorbate peroxidase and a virulence factor; extracelluar polysaccharide production in determining the virulence of Xanthomonas oryzae pv. oryzae (Xoo) isolates and its differential reaction to rice cultivars. A varied level of antioxidant scavenging activity and exopolysaccharide...

Author(s): Chithrashree and C. Srinivas  

August 2012

PEGylation of α-momorcharin retained its anti-tumor activity with reduced potency in vitro and in vivo

    α-Momorcharin (α-MMC) is the ribosome inactivating protein (RIPs) found to possess antitumor activity. However, acute toxicity and short plasma half-life were the major side effects preventing further clinical trial. To overcome this, α-MMC was further coupled to polyethylene glycol with di-molecular size of 20 kDa (PEG) using the cysteine residues, namely α-MMC-PEG. The...

Author(s): Bo Leng and Yanfa Meng  

August 2012

The phytochemical, antibacterial and antioxidant activity of five medicinal plants against the wound infecting bacteria

Leaf extracts of Senna italica, Ricinus communis, Lantana camara, Lippia javanicaand Ziziphus mucronata were screened for biological activity against bacteria which infect wounds. The leaves were extracted using different solvents of varying polarity (hexane, dichloromethane, acetone and methanol). Phytochemical analyses of the extracts were performed using thin layer chromatography (TLC). The extracts...

Author(s): M. A. Lekganyane, T. M. Matsebatlela, R. L. Howard, L. J. Shai and P. Masoko

August 2012

Dynamics of zinc sorption from aqueous matrices using plantain (Musa sp.) peel biomass

The influence of climate change on freshwater resources has undoubtedly affected the availability and quality of freshwater resources. However, the demand for water for agricultural, domestic, industrial and recreational purposes increases by the day globally. The need for remediation and reuse of large volumes of industrial wastewaters being generated globally therefore cannot be over-emphasized. The potential ability...

Author(s): Opeolu, B. O. and Fatoki, O. S.  

August 2012

The probiotic potential of lactobacilli isolated from Nile tilapia (Oreochromis niloticus)’s intestine

The potential probiotic acid lactic bacteria isolated from Nile tilapia (Oreochromis niloticus)’s intestine was tested for fish farming. In our collection, 10 Lactobacillus strains were targeted to confront a series of antibiotics in order to draw their resistance profile, and to test their degree of inhibitory to four pathogenic bacteria, Staphylococcus aureus, Escherichia coli,...

Author(s): D. Chemlal-Kherraz, F. Sahnouni, A. Matallah-Boutiba and Z. Boutiba

August 2012

Neonatal mortality of pigs in Nsukka, Southeast Nigeria

This study was conducted to investigate the causes of neonatal mortality among pig farms in Nsukka Local Government area of Enugu State, Nigeria. Forty (40) pig farms in the study area were randomly selected and used for the 20 weeks study duration. One week post partum was considered as the neonatal period. A total of 124 pregnant sows and 924 piglets farrowed during the study period were used. Data were obtained from...

Author(s): Abonyi, F. O., Omeh C.V.O. and Machebe, N. S.

August 2012

Tissue and ontogenic expression profiles of FATP1 and FATP4 genes in goose

Fatty acid transport proteins (FATPs) are a family of proteins involved in fatty acid uptake and activation. The tissues and ontogenic expression profiles of the critical genes participating in fatty acid metabolism have little been systematically investigated in goose. To gain insight into the gene-regulation processes in goose fatty acid metabolism, we detected the expression profiles...

Author(s): Fanli Kong, Juan Luo, Jing Sun, Daqian He, Zhiqing Yang, Qing Zhuand Yiping Liu