Matthias Horn (from the Uni. of Vienna) has just published an interesting paper about the Chlamydiae pan-genome. They obtained the genome of various members of the phylum and compared them with the existing ones. The most striking discovery for me, is the last sentence of the abstract:
Phylogenomic analysis focusing on chlamydial proteins with homology to plant proteins provided evidence for the acquisition of 53 chlamydial genes by a plant progenitor, lending further support for the hypothesis of an early interaction between a chlamydial ancestor and the primary photosynthetic eukaryote.
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