Economic production and biocontrol efficiency of lipopeptide biosurfactants from Bacillus mojavenis A21

In the wake of an increased attention on the eco-friendly biopesticidal products and the rising market requirements for organic agents, lipopeptides compounds have been described as biological control agents which improve the overall health growth and development of plants. Nevertheless, their high...

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Bibliographic Details
Published in:Biodegradation (Dordrecht) 2019-08, Vol.30 (4), p.273-286
Main Authors: Ayed, Hanen Ben, Azabou, Manel Cheffi, Hmidet, Noomen, Triki, Mohamed Ali, Nasri, Moncef
Format: Article
Language:English
Subjects:
Aquatic Pollution
Biological control
Biomedical and Life Sciences
Biosurfactants
Chemical analysis
Economic aspects
Economics
Fungicides
Fusarium
Geochemistry
In vitro methods and tests
In vivo methods and tests
Life Sciences
Lipopeptides
Lysis
Medical treatment
Microbiology
Mycelia
Operating costs
Original Paper
Pests
Plant diseases
Potatoes
Production costs
Salts
Seawater
Soil Science & Conservation
Spores
Substrates
Terrestrial Pollution
Tubers
Ultrastructure
Waste Management/Waste Technology
Waste Water Technology
Water analysis
Water Management
Water Pollution Control
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Summary:In the wake of an increased attention on the eco-friendly biopesticidal products and the rising market requirements for organic agents, lipopeptides compounds have been described as biological control agents which improve the overall health growth and development of plants. Nevertheless, their high production cost constitue the major flaw in their wide use to control plant diseases. The present article aims to formulate an economic media for lipopeptides production by Bacillus mojavensis A21 for application as natural fungicides for plant disease treatment. We herein demonstrated the suitability of the potato waste, as low cost substrate, for lipopeptides production. Moreover, sea water  was found to be a good mineral salts sources. In the second part of this study, we investigate the inhibitory activity of A21 lipopeptides against the phtopathogenic Fusarium sp. The in vitro test showed a minimal inhibitory concentration of about 0.3 mg/ml. The microscopic examination, of the treated Fusarium revealed an excessive lysis of the mycelia ultrastructure with destructed spores. The in vivo antagonist activity was confirmed towards the infected potato tubers. A21 lipopeptides are effective in decreasing by about 78.26% and 60.68% when applied as preventive and curative treatments, respectively, as compared to the untreated tubers.
ISSN:0923-9820
1572-9729
DOI:10.1007/s10532-018-9864-7