Cyanobacterial Diversity and a New Acaryochloris-Like Symbiont from Bahamian Sea-Squirts
Figure 5
Transmission electron microscopical images of photosymbionts from Trididemnum cyanophorum and Lissoclinum aff. fragile.
(A) Synechocystis sp. symbiont in Trididemnum cyanophorum; (B) Polyedric bodies located in the periphery of the Synechocystis cell; (C) Acaryochloris bahamiensis nv. sp. after division in the tunic of Lissoclinum fragile; (D) Detail showing the peptoglycan layer between two cells of Acaryochloris bahamiensis nv. sp. during the final stage of division; (E) Other cyanobacterial symbionts observed in the tunic of L. fragile; (F) Spicules and cyanobacteria distribution inside the tunic of L. fragile (asterisks indicate spicule location). The inset shows cyanobacteria in the tunic of the larvae (C: Cuticle; IT: Inner tunic; OT: Outer tunic).