(a) Principle of the reactions underlying DDRT-PCR analysis. (N) Any of the four nucleotides G, A, T, or C. V can be any nucleotide besides T. (B) Any nucleotide. Recently, a new approach has successfully been developed: Differential-Display Reverse Transcription-PCR (DDRT-PCR). This technique has been proven to. Establishment of infection and disease implies modifications in the genetic programmes of the cell systems that are involved and the differential expression of.

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The discovery of these affecting genes is related to the sequence of the primers used during the reverse transcription process. In-vivo expression technologies and differential display RT-PCR are providing new approaches to further examine a microbe’s response to experimental conditions which more closely resemble natural microbial associations and habitats.

This factor has a broad spectrum of activity against Gram-positive and specifically against Staphylococcus aureus MRSA. Antagonistic effect of endophytic isolate SA against S. In vitro antifungal activity of Argemone ochroleuca Sweet latex against some pathogenic fungi.

The reasons for this hypothesis came from that there are many recorded disadvantages of chloramphenicol including the risk of its side effects, rising of resistance rates and uncomfortable posology Diniz-Santos et al. Decane, tetradecane, pyrrolo [1,2-a] pyrazine-1,4-dione, hexahydro- and 2H-Chromenecarboxamide, 8-allyloxo- N -[2- 2-methyl-1H-indolyl ethyl]-found to be the minor components 4.

How does Europe PMC derive its citations network? The obtained sequences were compared with the sequences deposited in GenBank data dsrt http: Comparing the antagonistic effect of the isolated bacteria SA with different antibiotics To rate and determine the exact effect of the isolate SA against S.


The antagonistic factor was isolated from the bacterial culture medium and purified by thin layer chromatography technique, then analyzed by GC-MS analysis. It is widely produced by Bacillus species and found tremendous applications in pharmaceuticals Bhunia et al.

We would like to thank King Khalid University, Faculty of Science, Biology Department for supporting this work with all the required chemicals and equipments. Received Dec 1; Accepted May Support Center Support Center.

Verma and Verma reported the isolation and purification of antimicrobial peptide from celomic fluid of Indian earthworm Pheretima posthumous. The products cpr endophytic bacterial isolate B.

A review on production of serine alkaline protease by Bacillus spp.

National Center for Biotechnology InformationU. In this study, Bacillus endophyticus strain SA isolated from the inner tissue of the stem of the cultivated plant Salvadora persicaAsir, Kingdom of Saudi Arabia produces an antagonistic factor. This factor has a broad spectrum of activity against Gram-positive and specifically against Staphylococcus aureus MRSA.

Miswak stem parts were surface sterilized followed by the isolation of inner bacterial isolates on NA plates. On the other hand, only chloramphenicol recorded 2. They are able to antagonize the pathogenic microbes through the competition for space and nutrients, production of antibiotics, production of hydrolytic enzymes dddrt by inducing plant defense mechanisms Ryan et al.

The protein is well known as antimicrobial agent and was reported to be produced by plants, animals and insects. In our study, four up-regulated and down-regulated genes were chosen for gel purification and sequencing.


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Results and discussion Isolation and antimicrobial activity of endophytic bacteria It is well known that, the isolation of bacteria that are capable of invading the inner tissues of a certain plant is a critical process.

Gene Ontology GO Terms. Isolation, gene cloning and expression profile of a pathogen recognition protein: Read Article at publisher’s site. The antibacterial activity of the chosen bacterial isolate, named SA, was examined against S.

Please review our pce policy. Materials and methods Plant materials Salvadora persica L. Antagonistic bioactivity of an endophytic bacterium isolated from Epimedium brevicornu Maxim.

Although chloramphenicol showed higher activity than our endophytic isolate; the antagonistic activity of this isolate is more preferred than ddry antibiotic. Or filter your current search. Eicosane and ethyl acetate extract of Spirulena platensis consisted of heptadecane and tetradecane showed antimicrobial activities against some Gram positive and Gram negative bacteria and Candida albicans Ozdemir et al.

Differential display – Wikipedia

Braz J Infect Dis. Journal List 3 Biotech v. Detected compounds and its derivatives showed various biological activities, for example, Ganendren et al. Europe PMC requires Javascript to function effectively. A typical GC—MS chromatogram of the ethanol extracts inhibition zone slices.