(1) The leucoplast genomes of the beech root parasite Epifagus virginiana, the oak parasite Conopholis americana, and the euglenoid Astasia longa display these characteristics.(2) Up to 15 species of unicellular eukaryotes, including ciliates, testaceans, green algae, and euglenoid cells, are found as syninclusions with it.(3) Group II introns are found in the mitochondria of plants and Fungi and the chloroplasts of euglenoids and algae, as well as in Bacteria such as Cyanobacteria and Proteobacteria.(4) Group B therefore included all members of the Alveolata (ciliates, dinoflagellates, and apicomplexans) and the Discicristata ( euglenoids and trypanosomatids) as well as the Heterokontophyta and green algae/plants.(5) Endosymbiosis of green algal unicells with two different heterotrophs led to euglenoids and to chlororachniophytes.
