Volatile emission compounds from plant growth-promoting bacteria are responsible for the antifungal activity against F. solani .

Autor: Gutiérrez-Santa Ana A; Unidad de Tecnología Ambiental, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Av. Normalistas No. 800, Col. Colinas de la Normal, 44270 Guadalajara, Jalisco Mexico., Carrillo-Cerda HA; Unidad de Tecnología Ambiental, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Av. Normalistas No. 800, Col. Colinas de la Normal, 44270 Guadalajara, Jalisco Mexico., Rodriguez-Campos J; Unidad de Servicios Analíticos y Metrológicos, CIATEJ, Av. Normalistas No. 800, Col. Colinas de la Normal, 44270 Guadalajara, Mexico., Kirchmayr MR; Unidad de Tecnología Industrial, CIATEJ, Camino Arenero No. 1227, El Bajío, 45019 Zapopan, Jalisco Mexico., Contreras-Ramos SM; Unidad de Tecnología Ambiental, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Av. Normalistas No. 800, Col. Colinas de la Normal, 44270 Guadalajara, Jalisco Mexico., Velázquez-Fernández JB; Catedra-Conacyt assigned to Unidad de Tecnología Ambiental at CIATEJ, Av. Normalistas No. 800, Col. Colinas de la Normal, 44270 Guadalajara, Mexico.
Jazyk: angličtina
Zdroj: 3 Biotech [3 Biotech] 2020 Jul; Vol. 10 (7), pp. 292. Date of Electronic Publication: 2020 Jun 06.
DOI: 10.1007/s13205-020-02290-6
Abstrakt: The aims of this work were to screen isolated bacteria with a dual capacity: to inhibit Fusarium solani and to promote plant growth. Also, volatile compounds that would be responsible for that effect were identified. Seventy bacterial strains from the air, agricultural soils, hydrocarbons-contaminated soils, and extremophile soils were tested. The former were identified by Matrix-Assisted Laser Desorption/Ionization-time of flight mass spectrometry and 16S rDNA sequencing. The plant growth-promoting bacteria (PGPB) and their capability for phosphate solubilization, siderophores production, and indole production were determined. Twenty isolates from Bacillus and Pseudomonas genera inhibited the mycelial growth up to 40% in direct assays. Eleven isolates significantly inhibited mycelial growth in 18-24% via volatile emissions. Volatile compounds related to antifungal activity or stress response include ketones, sesquiterpenes, monoterpenoids, alkanes, and fatty acids. Our results support the potential of these PGPB to act as biocontrol agents against fungal pathogens via volatile emissions.
Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest.
(© King Abdulaziz City for Science and Technology 2020.)
Databáze: MEDLINE
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