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http://cicy.repositorioinstitucional.mx/jspui/handle/1003/3345| Identificación y actividad antifúngica de bacterias halófilas aisladas de suelos salinos en Campeche, México Identification and antifungal activity of halophilic bacteria isolated from saline soils in Campeche, México | |
| Miguel Guerra Camacho Maria C. Magaña-Tzuc ARELY ANAYANSI VARGAS DIAZ Hilda Victoria Silva Rojas MARIA MARCELA GAMBOA ANGULO | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| https://doi.org/10.1016/j.ram.2024.02.004 | |
| COLLETOTRICHUM GLOEOSPORIOIDES ALTERNARIA ALTERNATA BACILLUS EXTRACTOS MICROBIANOS | |
| Phytopathogenic fungi Alternaria alternata and Colletotrichum gloeosporioides cause diseases in plant tissues as well as significant postharvest losses. The use of chemical fungicides for their control has negative effects on health and the environment. Secondary metabolites from halophilic bacteria are a promising alternative for new antifungal compounds. In the present study, halophilic bacteria were isolated and characterized from two sites with saline soils called branquizales in Campeche, Mexico. A total of 64 bacteria were isolated. Agrobacterium, Bacillus, Inquilinus, Gracilibacillus, Metabacillus, Neobacillus, Paenibacillus, Priestia, Staphylococcus, Streptomyces and Virgibacillus were among the identified genera. The antifungal potential of the culture supernatant (CS) of 39 halophilic bacteria was investigated against C. gloeosporioides and A. alternata. The bacteria showing the greatest inhibition of mycelial growth corresponded to Bacillus subtilis CPO 4292, Metabacillus sp. CPO 4266, Bacillus sp. CPO 4295 and Bacillus sp. CPO 4279. The CS of Bacillus sp. CPO 4279 exhibited the highest activity and its ethyl acetate extract (AcOEt) inhibited the germination of C. gloeosporioides, with IC50 values of 8,630 μg/ml and IC90 of 10,720 μg/ml. The organic partition of the AcOEt extract led to three fractions, with acetonitrile (FAcB9) showing the highest antifungal activity, with values exceeding 66%. Halophilic bacteria from ‘blanquizales’ soils of the genus Bacillus sp. produce metabolites with antifungal properties that inhibit the phytopathogenic fungus C. gloeosporioides. © 2024 | |
| 2024 | |
| Artículo | |
| Revista Argentina de Microbiología, 56(3), 298-311, 2024. | |
| Español | |
| BIOLOGÍA MOLECULAR | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Artículos de Investigación Arbitrados |
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