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Transduction01:16

Transduction

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Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...
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Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
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Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
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Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
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Horizontal gene transfer (HGT) is a process where genetic material moves between organisms within the same generation, unlike vertical gene transfer, which occurs from parent to offspring. HGT plays a crucial role in microbial evolution, adaptation, and survival, particularly in shared environments like the human gut.Mobile genetic elements such as plasmids, prophages, integrons, insertion sequences, and transposons facilitate this process. HGT occurs through three primary mechanisms:...
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Transduction-Transplantation Mouse Model of Myeloproliferative Neoplasm
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Gene transfer: transduction.

Emanuela Frangipani1

  • 1Department of Science, University Roma Tre, V. le Marconi 446, 00146, Rome, Italy, emanuela.frangipani@uniroma3.it.

Methods in Molecular Biology (Clifton, N.J.)
|May 14, 2014
PubMed
Summary

Bacteriophages, viruses that infect bacteria, are common tools for studying Pseudomonas genetics. Phage transduction enables chromosome analysis, mutation mapping, and gene transfer in bacterial cells.

Area of Science:

  • Microbiology
  • Genetics
  • Molecular Biology

Background:

  • Bacteriophages are prevalent and easily isolated, particularly those infecting Pseudomonas strains.
  • Transducing systems utilizing bacteriophages are established tools in bacterial genetics.

Purpose of the Study:

  • To describe bacteriophage methodology for genetic analysis of Pseudomonas.
  • To detail methods applicable to strain PAO1 derivatives.

Main Methods:

  • Isolation of bacteriophages from natural environments or lysogenic strains.
  • Application of phage transduction for bacterial chromosome analysis and mutation mapping.
  • Utilizing phage systems for foreign gene or mutation introduction into bacterial chromosomes.

Main Results:

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  • Demonstration of bacteriophage utility in Pseudomonas genetic manipulation.
  • Successful application of phage methodology for chromosome analysis and gene transfer.

Conclusions:

  • Bacteriophage transduction is a versatile technique for Pseudomonas genetic studies.
  • The described phage methodology, based on Adams (1959), is effective for strain PAO1 derivatives.