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Role of Plant Growth-Promoting Rhizobacteria (PGPR) as BioFertilizers in Stabilizing Agricultural Ecosystems

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Book cover Organic Farming for Sustainable Agriculture

Part of the book series: Sustainable Development and Biodiversity ((SDEB,volume 9))

Abstract

Non-judicious and over applications of different toxic, synthetic chemical fertilizers lead to several environmental hazards, causing damages to human, animal, and ecosystem health and can even result in unfavorable economic turnaround. Residual chemical fertilizers in aquatic and/or rhizosphere zones could potentially disrupt the natural ecosystem balance severely hampering both agricultural productivity and initiate several critical health issues. To avoid such environmental, agricultural, and health crises, serious attention has now been shifted toward the production of environmentally friendly biofertilizers with higher economic returns and better financial gains in comparison with conventional synthetic chemical fertilizers. Under intensive agricultural practices, application of biofertilizers is of particular importance in increasing soil fertility and ensures right movement toward sustainable agriculture. To improve the agricultural productivity and yield stability, utilization of conducive terricolous microorganisms such as rhizobacteria, as biofertilizers, has been found to be of quite important under in case of modern agricultural management. The present review was aimed to elucidate firstly the main conceptions of rhizosphere and rhizobacteria, and secondly the direct/indirect functions of rhizobacteria-mediated plant growth promotion.

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Abbreviations

ABA :

Abscisic acid

ACC :

1-aminocyclopropane-1-carboxylate

AM :

Arbuscular mycorrhiza

CK :

Cytokinins

ET :

Ethylene

GAs :

Gibberellins

GB :

Glycine betaine

HCN :

Hydrogen cyanide

IAA :

Indole-3-acetic acid

MHB :

Mycorrhization helper bacteria

MOA :

Mechanism of action

PC :

Pseudomonas chlororaphis

PEG :

Polyethylene glycol

PF :

Pseudomonas fluorescens

PGPR :

Plant growth-promoting rhizobacteria

ePGPR :

Extracellular PGPR

iPGPR :

Intracellular PGPR

PGRs :

Plant growth regulators

PH :

Plant hormones (phytohormones)

PSR :

Plant systemic resistant

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Authors and Affiliations

  1. Department of Agronomy, Takestan Branch, Islamic Azad University, Takestan, PO. Box 466, Iran

    Peiman Zandi

  2. Department of Biological Sciences, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada

    Saikat Kumar Basu

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Correspondence to Peiman Zandi .

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  1. Agricultural and Environmental Scie, Tennessee State University, Nashville Tennessee, Texas, USA

    Dilip Nandwani

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Zandi, P., Basu, S.K. (2016). Role of Plant Growth-Promoting Rhizobacteria (PGPR) as BioFertilizers in Stabilizing Agricultural Ecosystems. In: Nandwani, D. (eds) Organic Farming for Sustainable Agriculture. Sustainable Development and Biodiversity, vol 9. Springer, Cham. https://doi.org/10.1007/978-3-319-26803-3_3

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