Applying Wheat-Associated Bacteria's producing Volatile Organic Compounds (VOCs) antagonistic to plant pathogenic fungi | ||||
| Egyptian Journal of Chemistry | ||||
| Volume 67, Issue 13, December 2024, Page 1103-1115 PDF (595.47 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2024.325246.10557 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Esraa Mohamed El Mohammady1; Wafaa Mohamed Abd El-Rahim   2; Michel R. Gohar3; Mohamed Abd ElAleem3; Tarek R. Elsayed4
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| 1Department of Toxicology, Central Laboratories For Armed Forces and Blood Bank (AFLMR). Egypt. | ||||
| 2Agricultural Microbiology Department National Research Center (NRC), Cairo, Egypt | ||||
| 3Department of Agricultural Microbiology, Faculty of Agriculture, Cairo University, Egypt. | ||||
| 4Department of Agricultural Microbiology, Faculty of Agriculture, Cairo University, Egypt | ||||
| Abstract | ||||
| Wheat, the first crop cultivated on earth, is a crucial staple food that must be grown in larger quantities to meet the needs of the expanding global population. Fusarium head blight (FHB), caused by destructive plant pathogenic fungi, harms wheat and other cereal crops. The degradation of fresh produce by fungi results in significant global economic losses. Despite the boost in agricultural productivity from chemical fertilizers and pesticides, there are notable environmental consequences. Researchers stress the importance of microbial VOCs in medicinal and agricultural biotechnology. In sustainable agriculture, microbial volatile organic compounds (MVOCs) are Rpotential eco-friendly substitutes for conventional pesticides. Hence, the objective of this study was to assess the effectiveness of volatile organic compounds, produced by bacteria isolated from Egyptian wheat plants, in inhibiting the growth of Fusarium graminearum. Two hundred bacterial isolates collected from various parts of wheat plants and soil samples were evaluated for their ability to produce volatile organic compounds with antifungal properties in vitro. The findings revealed that the VOCs inhibited the growth of Fusarium graminearum by 50.1 ± 2.1% after ten days, indicating a significant inhibitory effect on fungal mycelial growth. In this work, bioactive secondary metabolites were chemically identified using a GC-MS spectrometer for VOCs released by three tested antifungal bacterial isolates: Bacillus paramycoides, Achromobacter denitrificans and Alcaligenes faecalis. Bacillus paramycoids has been identified as the producer of 9 bioactive substances, which have known antibacterial and some anticancer properties, along with previous recognition for their effectiveness as antifungal agents. Achromobacter dentrificans also produces 3 volatile organic compounds with documented antifungal capabilities. The research emphasizes the antifungal properties of these volatile organic compounds (VOCs) and highlights the discovery of 3 VOCs produced by the Alcaligenes faecalis strain, all showing antifungal activity in prior studies. This underscores the potential of these bioactive substances and VOCs as effective antifungal agents. According to these findings, these substances can be employed as antagonists to develop a cutting-edge method of preventing fungal infections. | ||||
| Keywords | ||||
| Antagonistic effect; Bio-agent; Wheat; Fusarium graminearum; GC-MS | ||||
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