Cellular microorganisms, spheric (cocci), elongated (bacillus) or spiral, without nuclear membrane which can participate to:
- Nitrogen cycle, fixing air nitrogen and converting organic nitrogen.
- Carbon cycle, generating humic acids.
- Sulphur cycle, by phosphate solubilization.
- Organic material mineralization.
Some bacteria can transform cellulose (cellvibrio), pectine, starch … |
