Abstract
There are many bacteria in the soil, but they have less biomass because of
their small size. Soil-inhabitant bacteria are an essential source of nutrients for plants.
Some studies highlighted their industrial importance, like in the pharmaceutical
industry, perfume manufacturing, and agriculture product scale-up production,
including biofertilizers. Most of the studies have been carried out on Actinobacteria
and Nitrobacter because of their potential to produce biofertilizers and chemical
constituents on a large scale. This chapter discussed their taxonomic and morphological
characteristics and gathered details about their practical applications from limited
studies carried out in this field.