-to overcome the constant flux in nutrient concentration some bacteria have the capacity to produce INCLUSION BODIES
-can range in diameter from 0.2 to 0.7 um
-PHB inclusion are containing w/in a unique membrane that's composed of a single lipid layer.
-when nutrients are high in concentrations some bacterias can store it in inclusion w/in the cytoplasm.
-when nutrients in env. is scarce inclusions can by used by bac. to sustain its growth (reserve deposits
-if a bacterium is in a nutrient rich
env its likely to contain more/larger inclusions
-in depleted nutrients env. there are more likely to be fewer/small inclusions
since bac. may have utilized some of the store macromolecules.
- Why produce inclusion bodies?
- 1. nutrient reservoirs
- 2.since macromolecules are concentrated in inclusion bodies rather than dispersed throughout cytoplasm the microbe avoids an increase in osmotic pressure.
NOT ALL bacteria produce inclusion bodies so their presence can help ident. certain bacterial species.