HOST SWITCHING INCREASES GENE SHARING. “As a consequence of reductive evolution, mobile DNA elements have often been shown to be rare or absent from such streamlined bacteria. However, genome sequence data shows that mobile elements are present at sometimes high frequency in obligate intracellular bacteria that switch hosts, including Wolbachia, Rickettsia, Coxiella, and Phytoplasma.”
https://lnkd.in/dYh3-r4