The bacteria are vertically transmitted, usually directly from the bacteriocyte
to the cytoplasm of the eggs in the female ovary (Buchner, 1965).
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
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).
Bacteria lie on the bacteriocyte
surface among simple microvilli, but they are held more loosely than in Adipicola MV (Fig.
The number of bacteriocytes
per section per region was counted, and the mean area per bacteriocyte
was calculated for each section.
40g, the area of the bacteria expressed as a percentage of the total bacteriocyte
area, and the area of the sulfur-vesicles expressed as percentages of the total bacterial and total bacteriocyte
areas were calculated.
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.
Some thyasirids with symbionts have such expanded gill filaments, with a bacteriocyte
zone similar to that of some lucinids (Southward, 1986).
The areal dimension and location were chosen because they approximately cover the region of a bacteriocyte
that contains symbionts.
Large membrane-bound inclusions, possibly lysosomes or lysosomal residual bodies, also occur in the bacteriocyte
cytoplasm [ILLUSTRATION FOR FIGURE 3 OMITTED].