University:
Swansea University
Course:
PM134 | Microbiology
Academic year:

2023
Views:

427

Pages:

3
Author:

Amal J.

Genetic transfer SystemGene transfer processes - transduction, Conjugation, protoplast fusionmediated exchange.) in Lactic and batteria is studiedTransductionIt involves the transfer of a DNA fragment from one baiteriumto another by a bouterioprage.there are two forms of transduction generalized transduction andSpecialized transduction.During the replication of lytic bacteriophages and temperatebactorophage , occasionally the phage capsid accidently assembles arounda small fragment of bacterial DNAWhen this bacterophage, called a transducing particle infects anothabacterium, it. inject the fragment of donor baterial DNA it iscarrying into the recipient where it can subsequently beexchanged for a piece of the recipient's DNA by homologousrecombination. vinuponItDNNAttahmen.cell (hat)Injectionlysagenic cycle-wat protein synthesicalViral DNABitoViny particles assembledinto hasInductionEprophageCell divisionlynes.Normal aygrowthGeneralized TransductinStep 1- A bactoriophage adsorbs to a susceptible bacteriumStep 2- The bacteriophage genome. entere the bacterium Thegenome directs the bacterium's metabolic machinery to manufacbacteriophage components and enzymes. Bacteriophage - coded enzymes will also break up the bacterial chromosome.Step 3 - occasionally a bacteriophage capsid mistakenly assem bleearound either a fragment of the donor bacterium's chromosome oraround a plasmid instead of around a phage genome.Step 4 - -The bacteriophaga are released as the bacterium is lysedNote that one bacteriophage is carrying a fragment of the donorbacterium's DNA rather than a bacteriophage genomeStep 5 - The bacteriophage carrying the donor bauterium'sDNA address adsorbs to a recipient bauteriumStep 6 - The bacteriophage inserts the donor bacterium's DNA