Antifungal activity of some indigenous lactic acid bacteria isolated from soft wheat

Date
2018
Authors
Djaaboub, Serra
Abdallah, Moussaoui
Meddah, Boumedien
Makhloufi, Souad
Gouri, Saif
El Khatib, Rami
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Pure and Applied Microbiology
Abstract
The objective of this study was to find an alternative to chemical control of pathogenic fungi in wheat, using microorganisms that are safe and that can be isolated from the same biotopes of the pathogens. Lactic acid bacteria isolated from soft wheat grains were screened for their antifungal activity against Fusarium graminearum Schwab, Aspergillus flavus Link and Aspergillus parasiticus Speare, using two techniques (overlay and co-culture) on De Man, Rogosa, and Sharpe agar. The overlay method showed that out of forty-six lactic acid bacteria, five isolates showed an inhibition of radial growth range from 1% to 73.89%. According to the co-culture method, the most efficient biological agent for wheat mold growth isolate was LAB001 with an average rate of inhibition of 31.18% against A. flavus, 42.26% against A. parasiticus and 55.53% against F. graminearum. Lactic acid bacteria LAB001 was identified as Enterococcus faecium with 99.6% of similarity. E. faecium LAB001 can be considered as promising isolate for the biocontrol of pathogenic molds in small grain cereals. © 2018 Journal of Pure and Applied Microbiology. All rights reserved.
Description
This article is not available at CUD collection. The version of scholarly record of this Article is published in Journal of Pure and Applied Microbiology (2018), available online at: https://doi.org/10.22207/JPAM.12.1.14.
Keywords
Biocontrol, Lactic acid bacteria, Pathogenic molds, Small grain cereals, Antifungal activity, Aspergillus flavus, Aspergillus parasiticus, Bacterial strain, Bacterium identification, Bacterium isolate, Coculture, Controlled study, Enterococcus faecium, Fungus growth, Fusarium graminearum, Grain, Lactic acid bacterium, Nonhuman, Screening, Wheat, Mould
Citation
Djaaboub, S., Moussaoui, A., Meddah, B., Makhloufi, S., Gouri, S., & El Khatib, R. (2018). Antifungal activity of some indigenous lactic acid bacteria isolated from soft wheat. Journal of Pure and Applied Microbiology, 12(1), 111–118. https://doi.org/10.22207/JPAM.12.1.14