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The Role of Plant Growth-Promoting Rhizobacteria (PGPR) in Mitigating Plant’s Environmental Stresses

1
Department of Chemistry and Industrial Chemistry, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
2
Institute of Research on Terrestrial Ecosystems, National Council of Research, Via Moruzzi 1, 56124 Pisa, Italy
3
Eni S.p.A., Decarbonization & Environmental R&D, Via Maritano 26, 20097 San Donato Mil.se, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Jose Antonio Rodriguez Martin
Appl. Sci. 2022, 12(3), 1231; https://doi.org/10.3390/app12031231
Received: 28 December 2021 / Revised: 22 January 2022 / Accepted: 24 January 2022 / Published: 25 January 2022
(This article belongs to the Special Issue Green Technologies for a Cleaner Environment)
Phytoremediation is a cost-effective and sustainable technology used to clean up pollutants from soils and waters through the use of plant species. Indeed, plants are naturally capable of absorbing metals and degrading organic molecules. However, in several cases, the presence of contaminants causes plant suffering and limited growth. In such situations, thanks to the production of specific root exudates, plants can engage the most suitable bacteria able to support their growth according to the particular environmental stress. These plant growth-promoting rhizobacteria (PGPR) may facilitate plant growth and development with several beneficial effects, even more evident when plants are grown in critical environmental conditions, such as the presence of toxic contaminants. For instance, PGPR may alleviate metal phytotoxicity by altering metal bioavailability in soil and increasing metal translocation within the plant. Since many of the PGPR are also hydrocarbon oxidizers, they are also able to support and enhance plant biodegradation activity. Besides, PGPR in agriculture can be an excellent support to counter the devastating effects of abiotic stress, such as excessive salinity and drought, replacing expensive inorganic fertilizers that hurt the environment. A better and in-depth understanding of the function and interactions of plants and associated microorganisms directly in the matrix of interest, especially in the presence of persistent contamination, could provide new opportunities for phytoremediation. View Full-Text
Keywords: phytoremediation; rhizosphere; plant-microbe interaction; metal uptake; hydrocarbon rhizodegradation; marginal soils; drought; salinity phytoremediation; rhizosphere; plant-microbe interaction; metal uptake; hydrocarbon rhizodegradation; marginal soils; drought; salinity
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MDPI and ACS Style

Vocciante, M.; Grifoni, M.; Fusini, D.; Petruzzelli, G.; Franchi, E. The Role of Plant Growth-Promoting Rhizobacteria (PGPR) in Mitigating Plant’s Environmental Stresses. Appl. Sci. 2022, 12, 1231. https://doi.org/10.3390/app12031231

AMA Style

Vocciante M, Grifoni M, Fusini D, Petruzzelli G, Franchi E. The Role of Plant Growth-Promoting Rhizobacteria (PGPR) in Mitigating Plant’s Environmental Stresses. Applied Sciences. 2022; 12(3):1231. https://doi.org/10.3390/app12031231

Chicago/Turabian Style

Vocciante, Marco, Martina Grifoni, Danilo Fusini, Gianniantonio Petruzzelli, and Elisabetta Franchi. 2022. "The Role of Plant Growth-Promoting Rhizobacteria (PGPR) in Mitigating Plant’s Environmental Stresses" Applied Sciences 12, no. 3: 1231. https://doi.org/10.3390/app12031231

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