Medical Microbiology

184 3 GeneralBacteriology

Reproduction..............................................

Thephagereproductionprocessinvolvesseveralsteps(Fig.3. 26 ).

&Adsorption.Attachmenttocellsurfaceinvolvingspecificinteractionsbe-

tweenaphageproteinattheendofthetailandabacterialreceptor.

LyticPhageReproductionandLysogenization

Chromosome Phage DNA

Induction

Lytic phage

reproduction Lysogenization

Adsorption and

penetration

Cell lysis

Fig.3. 26 Injectionofthephagegenomeisfollowedeitherbydirectintracellular

(lytic)phagereproductionorlysogenizationofthehostcell.Inthelysogenization

process,thephageDNAisintegratedintothehostcellchromosomeandrepli-

catedtogetherwithitintheprocessofcellfission.

3

Kayser, Medical Microbiology © 2005 Thieme