Microbial diversity in soil is overwhelming, and so is their interaction with roots of higher plants. Rhizosphere is the area of the soil around the roots of higher plants where amazingly intense cross talk occurs with soil microbes, and they form a continuous network in a particular ecosystem. It is now well established that underground microbial diversity determines community composition of plants and of the ecosystem in an area. This is possible due to the diverse form of plant and soilmicrobe interaction occurring in the rhizosphere. In this review it has been our endeavour to elucidate ecosystem diversity as a function of plant and soil-microbe interactions. We have focussed primarily on soil microbial diversity determining plant community composition. However, literature concerning ecosystem diversity is scarce. To our understanding this could be a potential area of ecological research in years to come.
IntroductionSince beginning of study concerning diversity in ecosystem, ecologists have theorized and/or hypothesized the process as a function of anthropogenic activities (Nelson et al. 2006), ecosystem size (Blakely and Didham 2010), invasive species and infectious diseases (Crowl et al. 2008). It also includes various other aboveground abiotic factors like climate, age, environmental harshness, disturbance, environmental heterogeneity, as well as biotic interactions (Tilman and Pacala 1993). However, attention to the belowground drivers (soil microbes) of ecosystem