Transduction is the phage-mediated movement of
especially bacterial DNA from one bacterium to another. Typically, the
donor bacterium dies in the process of donating its DNA (as a consequence
phage-induced bacterial lysis) and the recipient may either homologously
recombine with the incoming DNA, illegitimately recombine with that DNA (such
that some degree of insertion occurs into the bacterial genome), or the DNA may
recombine in the course of prophage insertion. In addition, transduction can
move plasmids between bacteria, which typically does not involve subsequent
recombination, at least with the bacterial chromosome.
Transduction may be differentiated into a number of different forms and mechanisms...
More generically, phages have been implicated in the movement of various "genomic islands" of typically functionally related bacterial genes (including pathogenicity islands, etc.) between bacteria.
At the moment the community ecology section of the phage
ecology entry on Wikipedia is a useful resource so please see en.wikipedia.org/wiki/Transduction for
more information on this subject.
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