Husnik, F., Nikoh, N., Koga, R., Ross, L., Duncan, R. P., Fujie, M., et al. & McCutcheon, J. P. (2013). Horizontal Gene Transfer from Diverse Bacteria to an Insect Genome Enables a Tripartite Nested Mealybug Symbiosis. Cell 153(7): 1567–1578. doi:10.1016/j.cell.2013.05.040.
Not read. The summary is drawn from the abstract. A reading should check it first.
Why this is here
A2’s “2013 genomic study” of the mealybug system, cited without author or title; identified from the exchange’s own search results and confirmed by its abstract. A2 drew from it that genome reduction need not mean gene transfer to a single controlling genome.