Journal of Applied and Natural Science 7 (1): 540–556 (2015)
A review on plant growth promoting rhizobacteria acting as bioinoculants and their biological approach towards the production of sustainable agriculture.
Vibha Nehra* and Madhu Choudhary1
*Department of Microbiology, Kurukshetra University, Kurukshetra-136 119 (Haryana), INDIA
1Division of Soil and Crop Management, Central Soil Salinity Research Institute, Karnal-132 001 (Haryana), INDIA
*Corresponding author. E-mail: firstname.lastname@example.org
Abstract : Plant growth promoting rhizobacteria are the soil bacteria inhabiting around/on the root
surface and are directly or indirectly involved in promoting plant growth and development via production and secretion
of various regulatory chemicals in the vicinity of rhizosphere. There has been much research interest in PGPB and there
is now an increasing number of PGPB being commercialized for various crops. Today a lot of efforts have been made for
searching and investigating the PGPB and their mode of action, so that they can be exploited commercially as biofertilizers.
Because of the various challenges faced in screening, formulation, and application, PGPB have yet to fulfill their promise
and potential as commercial inoculants. Recent progress in our understanding of their diversity, colonization ability, mechanisms
of action, formulation, and application should facilitate their development as reliable components in the management of
sustainable agricultural systems. Several reviews have discussed specific aspects of PGPB as bioinoculants. We have tried to
critically evaluate the current status of bacterial inoculants for contemporary agriculture in developed and developing countries.
This review focuses on some important information regarding the biofertilizing potential of some important group of microbes,
their formulations, their application for the development of sustainable technology, scope of improvement by genetic engineering,
steps to be undertaken for their commercialization and their future prospects.
Keywords : Beneficial bacteria, Bioinoculants, PGPB, Carrier, Formulation, Sustainable agriculture.