Plant Growth Promoting Rhizobacteria to Mitigate Biotic and Abiotic Stress in Plants

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Sustainable Agriculture Reviews 60

Part of the book series: Sustainable Agriculture Reviews ((SARV,volume 60))

Abstract

Plant growth promoting rhizobacteria are microbes that promote plant growth and alleviate plant stress such as salinity, flooding, heavy metals, drought, cold, soil compaction, mechanical impedance, and nutrient deficiency. This chapter reviews mechanisms that alleviate plant stress using microorganisms. Mechanisms include the production of phytohormones such as auxin, of volatiles such as hydrogen cyanide and ammonia, of osmolytes such as proline and sugars, of exopolysaccharides, and the activation of antioxidant defence systems in plants. Under stress, the ethylene concentration increases in plants, leading to senescence and plant death. Here, plant growth promoting rhizobacteria favors the activity of 1-aminocyclopropane-1-carboxylate deaminase, which indirectly reduce ethylene concentration.

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Acknowledgements

The authors thank DST-SERB for providing financial support with research grant ECR/2017/000080 to carry out the work described in this review. The authors are also thankful to the Amity University Uttar Pradesh for providing infrastructural support. There is no conflict of interest.

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Correspondence to Sangeeta Pandey .

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Gupta, S., Pandey, S. (2023). Plant Growth Promoting Rhizobacteria to Mitigate Biotic and Abiotic Stress in Plants. In: Singh, N., Chattopadhyay, A., Lichtfouse, E. (eds) Sustainable Agriculture Reviews 60. Sustainable Agriculture Reviews, vol 60. Springer, Cham. https://doi.org/10.1007/978-3-031-24181-9_3

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