alexa Bacterial Modes of Action for Enhancing of Plant Growth
ISSN: 2155-952X

Journal of Biotechnology & Biomaterials
Open Access

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Review Article

Bacterial Modes of Action for Enhancing of Plant Growth

Premachandra D1,2, Hudek L1 and Brau L1*

1Centre for Regional and Rural Futures, School of Life and Environmental Sciences, Deakin University, Burwood, Victoria 3125, Australia.

2Centre for Cellular and Molecular Biology, School of Life and Environmental Sciences, Deakin University, Burwood, Victoria 3125, Australia.

*Corresponding Author:
Lambert Brau
Centre for Regional and Rural Futures
School of Life and Environmental Science
Deakin University, 221 Burwood Hwy, Burwood
Victoria 3125, Australia
Tel: +61 3 92517055
Fax: +61 3 92517048
E-mail: [email protected]

Received Date: July 11, 2016; Accepted Date: July 26, 2016; Published Date: August 02, 2016

Citation: Premachandra D, Hudek L, Brau L (2016) Bacterial Modes of Action for Enhancing of Plant Growth. J Biotechnol Biomater 6:236. doi:10.4172/2155- 952X.1000236

Copyright: © 2016 Premachandra D, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The greatest issue affecting the sustainability of broad acre cropping both environmentally and economically is the requirement of fertilizers. These are based on mined phosphorous or other mineral ores, ammonia produced through the Harbour-Bosch process and industrially manufactured potash. As global demand for fertilizers increases, the costs associated with the production for each of these major nutrients increases. Biofertilizers such as plant growth promoting bacteria (PGPB) are a possible biotechnology that could alleviate the need for addition of increasing amounts of fertilizers. These bacteria naturally occur in soils and aggressively colonize around plant roots and have been shown to have plant growth promoting effects. PGPB are known to influence plant growth by various direct and indirect mechanisms; while some can affect plant physiology directly by mimicking synthesis of plant hormones, others increase mineral availability and nitrogen content in soil. Here we review the previously characterized modes of action for enhancement of plant growth by PGPB such as nitrogen fixation, nutrient solubilization and production of auxins and enzymes, as well as discussing more recent proposed modes of action such as secondary metabolites.

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