Gabi-Mirela Matei, Sorin Matei and Victoria Mocanu
A wide component of global biodiversity in the world is represented by microbial diversity from soils. A high variety of bacteria and fungi have soil as habitat and these active decomposers represent the base of trophic chains, sustaining by their activities the diversity of superior trophiclevels.
Soil is a rich source of microorganisms responsible for its most important functions in terrestrial ecosystems. Interaction between edaphic microorganisms and plants usually determines the biodiversity of vegetation ( 1 ).