Glossary

Bacterium

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.