Symbioses with intracellular carbon-fixing bacteria, believed to be dependent on
bacteriocyte hemoglobin, have heretofore been described only in clams of the families Solemyidae, Lucinidae, and Vesicomyidae and in a few mussels, Mytilidae, restricted to the genus Bathy-modiolus (4).
Ultrabithorax is essential for
bacteriocyte development.
Nakabuchi discusses how mutualism can be revealed by a study of symbiont genomics and
bacteriocyte transcriptomics (Chapter 8).
aequizonata show a dense population of bacteria filling most of the
bacteriocyte (Fig.
The bacteria are intracellular and restricted to one cell type, generically known as the
bacteriocyte, which apparently functions exclusively to house and maintain the symbiosis.
Moreover, it is confined to a second type of
bacteriocyte that, notably, is as abundant as Buchnera-filled
bacteriocytes in the cedar aphid host (Gomez-Valero et at, 2004).
Bacteriocyte: host cell containing symbionts (Southward, 1982; Hand, 1987; deBurgh et al., 1989; Gardiner and Jones, 1993).
Bacteriocyte. Host cell containing symbionts (Southward, 1982).
The data presented here offer a first glimpse into the relationship between metabolite flux, chemoautotrophic activity, and host
bacteriocyte gene expression in a chemoautotrophic symbiosis.
Roots contain large blood vessels,
bacteriocyte layer, and epidermis.
The gill filaments in these species are expanded abfrontally and have a distinct
bacteriocyte zone (Fig.
The
bacteriocytes are typically spherical or cylindrical.