The microbial world is the largest unexplored reservoir of biodiversity on the earth. It is an important frontier in biology
under intensive investigations. The exploration of microbial diversity has been spurred by the fact that microbes are essential
for life since they perform numerous functions essential for the biosphere that include nutrient recycling and environmental
detoxification. The management and exploitation of microbial diversity has an important role in sustainable development
with the industrial and commercial application of microbial diversity worth millions of rupees. Given the heterogeneity of
natural environments and the enormous potential of microorganisms to provide novel pharmaceuticals, fine chemicals and
new technologies, the biotechnology industry has a vast, largely untapped resource for the discovery of new chemicals and
novel processes. However, despite the obvious economic value of microbial diversity, microorganisms have been largely
ignored in debates on the conservation and management of global diversity. There is, therefore, an urgent need to persuade
policy-maker to be more concerned about the conservation, management and exploitation of microbial diversity. There are a
number of reasons why the conservation of microbial diversity has not received the same attention as plants and animals.
For example, microorganisms are invisible, less familiar and perceived primarily as agents of disease. With respect to the
role of microorganisms in sustainable development, little is known about the potential contribution of microbial diversity to
the national economy, to wealth creation and to improvements in the quality of life. An appreciation of these factors might be
one way of changing government and public perception of microorganisms by showing that the sustainable use of microbial
diversity has positive economic value. This would help justify the costs involved in conserving microbial diversity, but
equally provide a useful indicator of the costs of inaction. In terms of the scientific rationale needed to underpin policy,
quantification of microbial diversity has been limited. This makes it difficult to indicate what needs to be conserved in order
to support the biotechnology industries and to understand fully the interactions between organisms responsible for
maintaining a functional ecosystem.