Antifungal and Plant Growth Promoting Activities of Indigenous Rhizobacteria Isolated from Maize (Zea mays L.) Rhizosphere

Plant growth promoting rhizobacteria (PGPR) enhance the plant growth directly by assisting in nutrient acquisition and modulating plant hormone levels, or indirectly by decreasing the inhibitory effects of various pathogens. The aim of this study was to select effective PGPR from a series of indigen...

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Published in:Communications in Soil Science and Plant Analysis 2018-01, Vol.49 (1), p.88-98
Main Authors: Bjelić, Dragana, Marinković, Jelena, Tintor, Branislava, Mrkovački, Nastasija
Format: Article
Language:English
Subjects:
Acetic acid
Antifungal activity
Antifungal properties
Azotobacter
Bacillus
Bacteria
Bioactive compounds
Corn
Fungicides
Hormones
Hydrocyanic acid
In vitro methods and tests
Indigenous plants
Indoleacetic acid
Lytic enzymes
Mineral nutrients
Pathogens
phosphate solubilization
Phosphates
Plant growth
plant growth promoting rhizobacteria (PGPR)
Plant growth substances
Plant hormones
Pseudomonas
Rhizosphere
Siderophores
Soil
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Summary:Plant growth promoting rhizobacteria (PGPR) enhance the plant growth directly by assisting in nutrient acquisition and modulating plant hormone levels, or indirectly by decreasing the inhibitory effects of various pathogens. The aim of this study was to select effective PGPR from a series of indigenous bacterial isolates by plant growth promotion and antifungal activity assays. This study confirmed that most of the isolates from maize rhizosphere were positive for PGPR properties by in vitro tests. Azotobacter and Bacillus isolates were better phosphate solubilizers and producers of lytic enzymes, hydrocyanic acid (HCN), and siderophores than Pseudomonas. Production of indole-3-acetic acid (IAA) and antifungal activity were the highest in Azotobacter, followed by Bacillus and Pseudomonas. The most effective Azotobacter isolates (Azt 3 , Azt 6 , Azt 12 ) and Bacillus isolates (Bac 10, Bac 16 ) could be used as PGPR agents for improving maize productivity. Further selection of isolates will be necessary to determine their efficiency in different soils.
ISSN:0010-3624
1532-2416
1532-4133
DOI:10.1080/00103624.2017.1421650