World Journal of Microbiology and Biotechnology

, Volume 28, Issue 4, pp 1327–1350

Plant growth-promoting rhizobacteria (PGPR): emergence in agriculture

Authors

  • P. N. Bhattacharyya
    • Department of Botany, Microbial Ecology LaboratoryGauhati University
    • Department of Botany, Microbial Ecology LaboratoryGauhati University
Review

DOI: 10.1007/s11274-011-0979-9

Cite this article as:
Bhattacharyya, P.N. & Jha, D.K. World J Microbiol Biotechnol (2012) 28: 1327. doi:10.1007/s11274-011-0979-9

Abstract

Plant growth-promoting rhizobacteria (PGPR) are the rhizosphere bacteria that can enhance plant growth by a wide variety of mechanisms like phosphate solubilization, siderophore production, biological nitrogen fixation, rhizosphere engineering, production of 1-Aminocyclopropane-1-carboxylate deaminase (ACC), quorum sensing (QS) signal interference and inhibition of biofilm formation, phytohormone production, exhibiting antifungal activity, production of volatile organic compounds (VOCs), induction of systemic resistance, promoting beneficial plant-microbe symbioses, interference with pathogen toxin production etc. The potentiality of PGPR in agriculture is steadily increased as it offers an attractive way to replace the use of chemical fertilizers, pesticides and other supplements. Growth promoting substances are likely to be produced in large quantities by these rhizosphere microorganisms that influence indirectly on the overall morphology of the plants. Recent progress in our understanding on the diversity of PGPR in the rhizosphere along with their colonization ability and mechanism of action should facilitate their application as a reliable component in the management of sustainable agricultural system. The progress to date in using the rhizosphere bacteria in a variety of applications related to agricultural improvement along with their mechanism of action with special reference to plant growth-promoting traits are summarized and discussed in this review.

Keywords

ACC- deaminaseColonization abilityPlant-microbe symbiosisQuorum sensing signal interferenceRhizosphere bacteriaRhizosphere engineering

Abbreviations

AHLs

N-acyl homoserine lactones

ACC

1-Aminocyclopropane-1-carboxylate

AFM

Anti-fungal metabolite

DAPG

2, 4-diacetylphloroglucinol

BYMV

Bean yellow mosaic potyvirus

CSI

Central insecticide board

ISR

Induced systemic resistance

PO

Peroxidise

PAL

Phenylalanine ammonia-lyase

PGPR

Plant growth-promoting rhizobacteria

PCBs

Polychlorinated biphenyls

PPO

Polyphenol oxidase

QS

Quorum sensing

RFLP

Restriction fragment length polymorphism

RZT

Root zone temperature

VOCs

Volatile organic compounds

YCF1

Yeast cadmium factor protein

Copyright information

© Springer Science+Business Media B.V. 2011