the ability of different strains of bacteria to acquire genes via conjugative elements is called coevolution.
the ability of different strains of bacteria to acquire genes via conjugative elements is called coevolution.
the ability of different strains of bacteria to acquire genes via conjugative elements is called?
coevolution
conjugative pili allow for the transfer of dna between bacteria, in the process of bacterial conjugation. they are sometimes called "sex pili", in analogy to sexual reproduction, because they allow for the exchange of genes via the formation of "mating pairs". perhaps the most well-studied is the pilus of "escherichia coli", encoded by the fertility f sex factor.
pilus
genome comparison shows only 657 core genes among the different strains. with about 42-47% of repetitive sequences, "o. tsutsugamushi" has the most highly repeated bacterial genome sequenced so far. repeated dna sequence includes short repetitive sequences, transposable elements (including insertion sequence elements, miniature inverted-repeat transposable elements, a group ii intron), and a greatly amplified integrative and conjugative element (ice) called the rickettsial amplified genetic element (rage). rage is also found in other rickettsial bacteria. in "o. tsutsugamushi", however, rage contains a number of genes including "tra" genes typical of type iv secretion systems and gene for ankyrin repeat–containing protein. ankyrin repeat–containing proteins are secreted through a type i secretion system into the host cell. the precise role of type iv secretion system in "o. tsutsugamushi" is not known. it may be involved in horizontal gene transfer between the different strains.
orientia tsutsugamushi