Pgpr

1. Baba Saheb BhimRao Ambedkar University (A
central university)Lucknow Raebarely road lucknow
Pin code -226025
Presentation on:-
Plant growth promoting rhizobacteria
(PGPR)
Presented by:-
Sukh Ram(M.Sc)

2. Introduction
*Plant growth promoting rhizobacteria
(PGPR): PGPR (rhizo-biofertilizers) are a
group of bacteria that actively colonize plant
roots and enhance plant growth and yield.
*PGPR as biofertilizers are well recognized as
efficient soil microbes for sustainable
agriculture and hold great promise in the
improvement of agriculture yields.

3. PGPR are involved in various biotic activities of the
soil ecosystem to make it dynamic for turnover and
sustainable for crop production(Gupta et al., 2015).
1. Rhizosphere
2. Siderophore production
Sustainable agriculture: Sustainable agriculture
involves the successful management of agricultural
resources to satisfy human needs while maintaining or
enhancing environmental quality without exploiting
the natural resources of future generations.

4. Type of rhizobacteria
• Plant growth promoting rhizobacteria can be classified
into extracellular plant growth promoting rhizobacteria
(ePGPR) and intracellular plant growth promoting
rhizobacteria (iPGPR)
• The ePGPRs may exist in the rhizosphere, on the
rhizoplane or in the spaces between the cells of root
cortex of root
Example-The bacterial generasuch as Agrobacterium,
Arthrobacter, Azotobacter, Azospirillum, Bacillus,
Burkholderia, Caulobacter, Chromobacterium,
Erwinia,

5. Type of rhizobacteria
• iPGPRs locates generally inside the
specialized nodular structures of root cells.
• The iPGPR belongs to the family of
Rhizobiaceae includes Allorhizobium,
Bradyrhizobium, Mesorhizobium and
Rhizobium, endophytes and Frankia species
both of which can symbiotically fix
atmospheric nitrogen with the higher plants .

6. Action of PGPR
• N2-fixation and P-solubilization,production of
antibiotics, and other plant growth promoting
substances are the principal contribution of the
PGPR in the agro-ecosystems.
• plant growth promoting rhizobacteria can reduce
chemical fertilizers application and economically,
environmentally beneficial for lower production
cost as well as recognize the best soil and crop
management practices to achieve more
sustainable agriculture as well as fertility of soil
[9].

12. Conclusion
• PGPR can be very effective and are potential
microbes for enriching the soil fertility and enhancing
the agriculture yield. PGPR are excellent model
systems which can provide the biotechnologist with
novel genetic constituents and bioactive chemicals
having diverse uses in agriculture and environmental
sustainability. Current and future progress in our
understanding of PGPR diversity, colonization ability,
mechanisms of action, formulation, and application
could facilitate their development as reliable
components in the management of sustainable
agricultural systems.

13. References
1.Revitalization of plant growth promoting rhizobacteria for sustainabledevelopment
in agriculture (review), Author-Sushanto Goudaa, Rout George Kerryb, Gitishree
Dasc, Spiros Paramithiotisd, Han-Seung Shine,
• Jayanta Kumar Patrac,⁎ Microbiological Research 206 (2018) 131–140.
2. Plant Growth Promoting Rhizobacteria (PGPR): Current and Future Prospects for
Development of Sustainable Agriculture Author-Govind Gupta, Shailendra Singh Parihar,
Narendra Kumar Ahirwar, Sunil Kumar Snehi and Vinod Singh*
3. PLANT GROWTH PROMOTING RHIZOBACTERIA: A REVIEW ARTICLE, Author- Meenkshi Nadal and Rajani
Hooda(Vol. 5, Issue, 12, pp.3863-3871, December, 2013)

14. Thank
you