International Journal of Innovative Approaches in Agricultural Research
Abbreviation: IJIAAR | ISSN (Online): 2602-4772 | DOI: 10.29329/ijiaar

Original article    |    Open Access
International Journal of Innovative Approaches in Agricultural Research 2023, Vol. 7(4) 487-497

Determination of in vitro Biocontrol Potentials of Antagonist Bacterial Isolates Against Onion Basal and Root Rot Disease Agent Fusarium proliferatu

Merve Kara, Soner Soylu, Yusuf Gümüş, Emine Mine Soylu, Aysun Uysal & Şener Kurt

pp. 487 - 497   |  DOI: https://doi.org/10.29329/ijiaar.2023.630.10

Published online: December 31, 2023  |   Number of Views: 62  |  Number of Download: 202


Abstract

Various Fusarium species cause significant yield and quality losses in onion (Allium cepa L.) plants. Onion basal and root rot, caused by Fusarium proliferatum, is an emerging postharvest disease that causes severe economic losses. Although the disease has long been recognized as a major constraint to the production of Allium spp., there is insufficient information to support disease management. In recent years, a need has arisen for environmentally friendly, innovative alternative methods to avoid the use of chemical pesticides in the control of diseases that are a problem in agriculture. In this study, the biocontrol efficiency of antagonistic bacterial isolates obtained from bulbs, roots and leaves of healthy onion plants was investigated against F. proliferatum in vitro. The antagonistic activity of the bacterial isolates in inhibiting the mycelial growth of the fungal agent was determined by the dual culture assay. The bacterial isolates were identified by morphological, biochemical and proteomic (MALDI-TOF MS) methods. A total of 18 putative bacterial isolates were obtained from the bulbs, roots and leaves of healthy onion plants on selective media. As a result of in vitro dual culture assays, only six bacterial isolates (Bacillus cereus MK2, Enterobacter xiangfangensis MK3, Bacillus thuringiensis MK8, Alcaligenes faecalis MK9, Pseudomonas putida MK16 and Citrobacter freundii MK17) significantly suppressed mycelial growth of disease agent (43.89-50.56% inhibition). Bacillus cereus MK2 was found to be the most effective bacterial isolate with a 50.56% inhibition rate of mycelial growth. Overall, the results suggest that Bacillus cereus MK2 could be used as a potential biocontrol agent for a sustainable and environmentally friendly control strategy for onion fields affected by Fusarium basal and root rot disease. It is necessary to conduct further studies on the effects of the effective bacterial isolates against the pathogen in vivo and their mechanisms of action.

Keywords: Onion, Antagonist, Bacillus spp., Biological control


How to Cite this Article

APA 6th edition
Kara, M., Soylu, S., Gumus, Y., Soylu, E.M., Uysal, A. & Kurt, S. (2023). Determination of in vitro Biocontrol Potentials of Antagonist Bacterial Isolates Against Onion Basal and Root Rot Disease Agent Fusarium proliferatu . International Journal of Innovative Approaches in Agricultural Research, 7(4), 487-497. doi: 10.29329/ijiaar.2023.630.10

Harvard
Kara, M., Soylu, S., Gumus, Y., Soylu, E., Uysal, A. and Kurt, S. (2023). Determination of in vitro Biocontrol Potentials of Antagonist Bacterial Isolates Against Onion Basal and Root Rot Disease Agent Fusarium proliferatu . International Journal of Innovative Approaches in Agricultural Research, 7(4), pp. 487-497.

Chicago 16th edition
Kara, Merve, Soner Soylu, Yusuf Gumus, Emine Mine Soylu, Aysun Uysal and Sener Kurt (2023). "Determination of in vitro Biocontrol Potentials of Antagonist Bacterial Isolates Against Onion Basal and Root Rot Disease Agent Fusarium proliferatu ". International Journal of Innovative Approaches in Agricultural Research 7 (4):487-497. doi:10.29329/ijiaar.2023.630.10.

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