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Oscillatoria Rubenscens
''Oscillatoria'' is a genus of Filamentation, filamentous cyanobacterium which is often found in freshwater environments, such as hot springs, and appears blue-green. Its name refers to the oscillation, oscillating motion of its filaments as they slide against each other to position the colony facing a light source. ''Oscillatoria'' reproduces by Fragmentation (reproduction), fragmentation, facilitated by dead cells which separate a filament into separate sections, or Hormogonium, hormogonia, which then grow. ''Oscillatoria'' uses photosynthesis to survive and reproduce. Each filament of oscillatoria consists of trichome which is made up of rows of cells. The tip of the trichome oscillates like a pendulum. In reproduction, it takes place by vegetative means only. Usually the filament breaks into a number of fragments called hormogonia. Each hormogonium consist of one or more cells and grow into a filament by cell division in one direction. ''Oscillatoria'' are the subject of rese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oscillatoria Princeps
''Oscillatoria princeps'' is the type species (lectotype) of the cyanobacterial (blue green algal) genus ''Oscillatoria''. The cyanobacterium is dark blue green in colour, due to the presence of the phycobilin pigments phycocyanin and phycoerythrin. Individual filaments are blue green to olive green in colour. Growth takes place only by transverse division hence the trichome comprises a single row of cells stacked one above the other. A cytoplasmic sheath is present which is very thin, hyaline and indistinct. Mature trichomes are straight, the cells much broader than long and has hemispherical apical cell with keritomized (irregular to radial thylakoid arrangement) content. Trichome unconstricted in growth phase and constrictions were observed during reproduction. Distinct cross walls present. The size of the cells varies from 57.6 µm to 69.1 µm in width and 5.2 µm to 9.6 µm in length thus the ratio of the length and breadth is 1:8. Stack of poker chip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
