**7. Forest biome and associated microorganisms**

Microorganisms are almost ubiquitous in both the terrestrial and aquatic habitats, and regardless of their microscopic proportions, they play an important part in global nutrient cycling. All the multicellular organisms have a close relationship with different microbes, and those organisms that are living in natural environment cannot be considered free from germs. Mutually associated microorganisms use an extensive variety of effects on their hosts from helpful to harmful. Forest biomes are among the species-rich terrestrial systems, and this equally applies to microbes living in forests. Forest soil host not only has rich microbe groups, but also animals and plants that provide them a habitat. Recent developments significantly widened our consideration of the taxonomic and functional variety of microbes living in forest biomes, which can collectively be termed "forest micro biota." Still, many phases of the dynamics of microorganism values of their assemblage and their contacts with hosts remain unclear and require more research [13].
