Association of Arbuscular Mycorrhizal Fungi and other Rhizosphere Microbes with Different Medicinal Plants in the Calcareous Soil of Ariyalur District, India

Indian is reticent source of medicinal and potential plants source and varieties of chemical substances. The narrow region of soil is directly influenced by root exudates used in rhizophere and associated soil micro organism. Recent studies have shown that, in natural ecosystems, plant diversity (Prober et al., 2015) and the genotypes of individual plants (Coats et al., 2014) can influence the composition of their rootassociated microbes. The term rhizosphere was related to the volume of soil affected by the presence and activity of the plant roots (Brimecombe Melissa et al., 2001). In general root depositions are considered the major driving force behind plant – microbe interactions in environment (Nelson and Louise, 2004; Pinton Roberto et al., 2001). Microbial activity is stimulated by these root depositions and in turn alters the rhizosphere soil.