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Biocontrol Activity of Bacillus megaterium BM344-1 against Toxigenic Fungi by Aya Ehab Saleh; Zahoor Ul-Hassan; Randa Zeidan; Noora Al-Shamary; Thoraya Al-Yafei; Hajer Alnaimi; Nayla Salah Higazy; Quirico Migheli; Samir Jaoua is a Engineering article available to read on EtoBox.

What is Biocontrol Activity of Bacillus megaterium BM344-1 against Toxigenic Fungi about?

Mycotoxins are secondary metabolites of some fungal species and represent important contaminants of food and feed. This study aimed to explore the biological control activity of Bacillus megaterium BM344-1 volatile organic compounds (VOCs) on the growth and mycotoxin production of single representatives of the toxigenic species Aspergillus flavus, Aspergillus carbonarius, Penicillium verrucosum, and Fusarium verticillioides. In vitro co-incubation experiments indicated the P. verrucosum isolate as the most sensitive one, with a growth inhibition ratio of 66.7%, followed by A. flavus (29.4%) and F. verticillioides (18.2%). Exposure of A. flavus, P. verrucosum, and F. verticillioides to BM344-1 VOCs resulted in complete inhibition of aflatoxins (AFB 1 , AFG 1 , and AFG 2 ), ochratoxin A, and fumonisin B 1 (FB 1 ) synthesis on artificial media, respectively. In vivo experiments on maize kernels showed 51% inhibition of fungal growth on ears simultaneously infected with A. flavus spores and exposed to BM344-1 volatiles. Likewise, AF synthesis by A. flavus was significantly (p < 0.05) inhibited (25.34 ± 6.72 μg/kg) by bacterial volatiles as compared to that in control maize ears (91.81

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Author

Aya Ehab Saleh; Zahoor Ul-Hassan; Randa Zeidan; Noora Al-Shamary; Thoraya Al-Yafei; Hajer Alnaimi; Nayla Salah Higazy; Quirico Migheli; Samir Jaoua

Publisher

American Chemical Society (ACS)

Published

2021

Language

EN

Field

Engineering (Physical Sciences)