A plastome is the genome of a plastid, a type of organelle found in plants and in a variety of protoctists.
As of January, 2017, all of their orders are represented except Commelinales, Picramniales, Huerteales, Escalloniales, Bruniales, and Paracryphiales.
[2] This sortable table is expected to compile complete plastid genomes representing the largest range of sizes, number of genes, and angiosperm families.
Meta-algae are organisms with photosynthetic organelles of secondary or tertiary endosymbiotic origin, and their close non-photosynthetic, plastid-bearing, relatives.
The unicellular eukaryote Paulinella chromatophora possesses an organelle (the cyanelle) which represents an independent case of the acquisition of photosynthesis by cyanobacterial endosymbiosis.