Index >> Soil Microbiology >>Major Microbiological Process in Soil By Free Living Microorganisms Which indirectly Influence Plant Growth

Nature of microbial processes

Example of microorganisms involved

Aerobic decomposition of organic matter (cellulose, lignin, chitin etc.)

Trichoderma, Fomes, Armillaria, Achromobacter Nocardia, Streptomyces

Anaerobic decomposition f organic matter

Clostridium, methane bacteria (Methanobacter and Methanoccus)

Non-symbiotic nitrogen fixation

Anabaena, Azotobacter, Beijerinckia

Nitrogen immobilization

Bacteria, fungi and actinomycetes

Nitrogen mineralization

Psedomonas, Bacillus, Serratia

Nitrification

Nitrosomonas, Nitrobacter

Denitrification

Psedomonas, Achromobacter

Phosphate solubilization

Pseudomonas, Bacillus, Aspergillus

Sulphur transformations

Thiobacillus, Beggiatoa, Desulfovibrio

Iron transformations

Gallionella, Ferribacterium, Leptothrix

Manganese transformations

Aerobacter, Corynebacterium, Flavobacterium, Cladosporium 

Copper transformations

Desulfovibrio, Clostridium, Escherichia