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Bacterial modes of action for enhancing of plant growth

Version 2 2024-06-03, 17:11
Version 1 2016-10-17, 15:34
journal contribution
posted on 2024-06-03, 17:11 authored by D Premachandra, L Hudek, Lambert BrauLambert Brau
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.

History

Journal

Journal of biotechnology & biomaterials

Volume

6

Season

Article number: 1000236

Pagination

1-8

Location

Los Angeles, Calif.

ISSN

2155-952X

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2016, The Authors

Issue

3

Publisher

OMICS International Journals