Elsevier

Pedosphere

Volume 30, Issue 1, February 2020, Pages 40-61
Pedosphere

Plant growth-promoting rhizobacteria—alleviators of abiotic stresses in soil: A review

https://doi.org/10.1016/S1002-0160(19)60839-8Get rights and content

Abstract

With the continuous increase in human population, there is widespread usage of chemical fertilizers that are responsible for introducing abiotic stresses in agricultural crop lands. Abiotic stresses are major constraints for crop yield and global food security and therefore require an immediate response. The implementation of plant growth-promoting rhizobacteria (PGPR) into the agricultural production system can be a profitable alternative because of its efficiency in plant growth regulation and abiotic stress management. These bacteria have the potential to promote plant growth and to aid in the management of plant diseases and abiotic stresses in the soil through production of bacterial phytohormones and associated metabolites as well as through significant root morphological changes. These changes result in improved plant-water relations and nutritional status in plants and stimulate plants' defensive mechanisms to overcome unfavorable environmental conditions. Here, we describe the significance of plant-microbe interactions, highlighting the role of PGPR, bacterial phytohormones, and bacterial metabolites in relieving abiotic environmental stress in soil. Further research is necessary to gather in-depth knowledge on PGPR-associated mechanisms and plant-microbe interactions in order to pave a way for field-scale application of beneficial rhizobacteria, with the aim of building a healthy and sustainable agricultural system. Therefore, this review aims to emphasize the role of PGPR in growth promotion and management of abiotic soil stress with the goal of developing an eco-friendly and cost-effective strategy for future agricultural sustainability.

REFERENCES (196)

  • G L Jorge et al.

    Endosymbiotic Methylobacterium oryzae mitigates the impact of limited water availability in lentil (Lens culinaris Medik.) by increasing plant cytokinin levels

    Environ Exp Bot

    (2019)
  • H Jung et al.

    OsIAA6, a member of the rice Aux/IAA gene family, is involved in drought tolerance and tiller outgrowth

    Plant Sci

    (2015)
  • S M Kang et al.

    Gibberellin secreting rhizobacterium, Pseudomonas putida H-2-3 modulates the hormonal and stress physiology of soybean to improve the plant growth under saline and drought conditions

    Plant Physiol Biochem

    (2014)
  • Q B Ke et al.

    Transgenic poplar expressing Arabidopsis YUCCA6 exhibits auxin-overproduction phenotypes and increased tolerance to abiotic stress

    Plant Physiol Biochem

    (2015)
  • J Kohler et al.

    Induction of antioxidant enzymes is involved in the greater effectiveness of a PGPR versus AM fungi with respect to increasing the tolerance of lettuce to severe salt stress

    Environ Exp Bot

    (2009)
  • A Kumar et al.

    Does plant-microbe interaction confer stress tolerance in plants: A review?

    Microbiol Res

    (2018)
  • S A Abd El-Azeem et al.

    Alleviation of salt stress in eggplant (Solanum melongena L.) by plant-growth-promoting rhizobacteria

    Comm Soil Sci Plant Anal

    (2012)
  • E F Abd-Allah et al.

    Endophytic bacterium Bacillus subtilis (BERA 71) improves salt tolerance in chickpea plants by regulating the plant defense mechanisms

    J Plant Interact

    (2018)
  • P Ahmad

    Growth and antioxidant responses in mustard (Brassica juncea L.) plants subjected to combined effect of gibberellic acid and salinity

    Arch Agron Soil Sci

    (2010)
  • A Albacete et al.

    Hormonal changes in relation to biomass partitioning and shoot growth impairment in salinized tomato (Solanum lycopersicum L.) plants

    J Exp Bot

    (2008)
  • M H Ansary et al.

    Effect of Pseudomonas fluorescent on proline and phytohormonal status of maize (Zea mays L.) under water deficit stress

    Ann Biol Res

    (2012)
  • T N Arkhipova et al.

    Cytokinin producing bacteria enhance plant growth in drying soil

    Plant Soil

    (2007)
  • E Armada et al.

    Differential activity of autochthonous bacteria in controlling drought stress in native Lavandula and Salvia plants species under drought conditions in natural arid soil

    Microb Ecol

    (2014)
  • R Aroca et al.

    Drought, abscisic acid and transpiration rate effects on the regulation of PIP aquaporin gene expression and abundance in Phaseolus vulgaris plants

    Ann Bot

    (2006)
  • M H Arzanesh et al.

    Wheat (Triticum aestivum L.) growth enhancement by Azospirillum sp. under drought stress

    World J Microbiol Biotechnol

    (2011)
  • M Asgher et al.

    Minimising toxicity of cadmium in plants—role of plant growth regulators

    Protoplasma

    (2015)
  • M Y Ashraf et al.

    Breeding for salinity tolerance in plants

    Crit Rev Plant Sci

    (1994)
  • A Atia et al.

    Plant Hormones: Potent targets for engineering salinity tolerance in plants

  • R Awasthi et al.

    Temperature stress and redox homeostasis in agricultural crops

    Front Environ Sci

    (2015)
  • H B Bal et al.

    Isolation of ACC deaminase producing PGPR from rice rhizosphere and evaluating their plant growth promoting activity under salt stress

    Plant Soil

    (2013)
  • H Bandurska et al.

    The effect of jasmonic acid on the accumulation of ABA, proline and spermidine and its influence on membrane injury under water deficit in two barley genotypes

    Acta Physiol Plant

    (2003)
  • D A Barber et al.

    The release of organic substances by cereal roots into soil

    New Phytol

    (1976)
  • S Basu et al.

    Plant adaptation to drought stress

    F1000 Res

    (2016)
  • A A Belimov et al.

    Rhizosphere bacteria containing 1-aminocyclopropane-1-carboxylate deaminase increase yield of plants grown in drying soil via both local and systemic hormone signalling

    New Phytol

    (2009)
  • A A Belimov et al.

    Rhizobacteria that produce auxins and contain 1-amino-cyclopropane-1-carboxylic acid deaminase decrease amino acid concentrations in the rhizosphere and improve growth and yield of well-watered and water-limited potato (Solanum tuberosum)

    Ann Appl Biol

    (2015)
  • C Bertin et al.

    The role of root exudates and allelochemicals in the rhizosphere

    Plant Soil

    (2003)
  • C Bianco et al.

    Medicago truncatula improves salt tolerance when nodulated by an indole-3-acetic acid-overproducing Sinorhizobium meliloti strain

    J Exp Bot

    (2009)
  • M Botella et al.

    Polyamine, ethylene and other physico-chemical parameters in tomato (Lycopersicon esculentum) fruits as affected by salinity

    Physiol Plant

    (2000)
  • R Bottini et al.

    Gibberellin production by bacteria and its involvement in plant growth promotion and yield increase

    Appl Microbiol Biotechnol

    (2004)
  • J Bresson et al.

    The PGPR strain Phyllobacterium brassicacearum STM196 induces a reproductive delay and physiological changes that result in improved drought tolerance in Arabidopsis

    New Phytol

    (2013)
  • U Chakraborty et al.

    Role of microorganisms in alleviation of abiotic stresses for sustainable agriculture

  • D Chandra et al.

    Field performance of bacterial inoculants to alleviate water stress effects in wheat (Triticum aestivum L.)

    Plant Soil

    (2019)
  • D Chandra et al.

    Evaluation of ACC-deaminase-producing rhizobacteria to alleviate water-stress impacts in wheat (Triticum aestivum L.) plants

    Can J Microbiol

    (2019)
  • L Chen et al.

    Induced maize salt tolerance by rhizosphere inoculation of Bacillus amyloliquefaciens SQR9

    Physiol Plant

    (2016)
  • T Chen et al.

    Casparian strip development and its potential function in salt tolerance

    Plant Signal Behav

    (2011)
  • Z Y Cheng et al.

    1-Aminocyclopropane-1-carboxylate deaminase from Pseudomonas putida UW4 facilitates the growth of canola in the presence of salt

    Can J Microbiol

    (2007)
  • A Chini et al.

    The JAZ family of repressors is the missing link in jasmonate signalling

    Nature

    (2007)
  • A C Cohen et al.

    Azospirillum brasilense ameliorates the response of Arabidopsis thaliana to drought mainly via enhancement of ABA levels

    Physiol Plant

    (2015)
  • E H Colebrook et al.

    The role of gibberellin signalling in plant responses to abiotic stress

    J Exp Biol

    (2014)
  • C M Creus et al.

    Water relations and yield in Azospirillum-inoculated wheat exposed to drought in the field

    Can J Bot

    (2004)
  • Cited by (163)

    View all citing articles on Scopus
    View full text