Ultrastructures of the Golgi Body and Cell Surface in Cyanidioschyzon merolae.

Phototaxis in the Unicellular Red Algae Cyanidioschyzon merolae and Cyanidium caldarium

“…The thickness of the cell surface structure was 40-80 nm. These results were consistent with observations by transmission electron microscopy, in which the filaments of the exterior surface of C. merolae are approximately 100 nm in length and 8 nm in diameter (Okuwaki et al 1996). The cell surface structure of C. merolae seemed to be thick enough and flexible enough to maintain regular shapes, such as club-and delta-shapes, which would enable crawling.…”

“…Cell surface of C. merolae Next, we examined the exterior cell surface of C. merolae. To examine the filamentous structure of the exterior cell surface of C. merolae (Okuwaki et al 1996), the cells were disrupted in a French Press and viewed by scanning electron microscopy. In the French Press, most cells were disrupted, although a small number of cells remained undisrupted or partly disrupted.…”

“…The club-shaped C. merolae cells proliferate by binary fission while the spherical C. caldarium cells manufacture endospores. C. merolae does not have a recognizable cell wall, but is coated with an electron-dense thin layer of filaments , Okuwaki et al 1996, while C. caldarium has a cell wall approximately 50 nm thick. P. cruentum which is a phototactic red alga has a fibrillar sheath instead of cell wall surrounding the cell membrane (Gantt and Conti 1965).…”

Enigmatic Microorganisms and Life in Extreme Environments

“…merolae is a model organism for investigating the control mechanism of organelle division for the following reasons: (1) C. merolae is a unicellular red alga that contains one chloroplast, one mitochondrion, one microbody, one Golgi apparatus, and one nucleus per cell , Okuwaki et al 1996. merolae is a model organism for investigating the control mechanism of organelle division for the following reasons: (1) C. merolae is a unicellular red alga that contains one chloroplast, one mitochondrion, one microbody, one Golgi apparatus, and one nucleus per cell , Okuwaki et al 1996.…”

Detecting Cytoplasmic rRNA in the Primitive Red Alga Cyanidioschyzon merolae.

“…The primitive red alga Cyanidioschyzon merolae has one nucleus, one lens-shaped mitochondrion, and a single torpedo-shaped chloroplast in an oval cell (De Luca et al 1978, Seckbach 1992, Suzuki et al 1992. These cells also have a single Golgi body and one microbody (Okuwaki et al 1996). This alga multiplies by a binary division and its mitotic cycle can be synchronized (Suzuki et al 1994, Terui et al 1995.…”