Nowack, E. C. M., Melkonian, M. & Glöckner, G. (2008). Chromatophore Genome Sequence of Paulinella Sheds Light on Acquisition of Photosynthesis by Eukaryotes. Current Biology 18(6): 410–418. doi:10.1016/j.cub.2008.02.051.

Not read. The summary is drawn from the abstract. A reading should check it first.

Why this is here

A2 said Paulinella’s chromatophores “acquired photosynthetic cyanobacterial descendants independently of the ancient plastid endosymbiosis” and have undergone genome reduction. Its citation went to a search result, not a named work. This is the primary source for the independence and the reduction, registered for CASE-174 beside LIT-1557’s import.