Effect of Metabolites Produced by Bacillus atrophaeus and Brevibacterium frigoritolerans Strains on Postharvest Biocontrol of Alternaria alternata in Tomato (Solanum lycopersicum L.)

In the present study, the antifungal activity of metabolites produced by Bacillus atrophaeus B5 and a new Brevibacterium strain against Alternaria alternata was evaluated. Assays in vitro and in vivo on tomato fruit during postharvest were made. Based on the 16S rDNA gene sequence analysis, the new...

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Bibliographic Details
Published in:Biocontrol Science 2021, Vol.26(2), pp.67-74
Main Authors: CHACÓN-LÓPEZ, ALEJANDRA, GUARDADO-VALDIVIA, LIZETH, BAÑUELOS-GONZÁLEZ, MIRIAM, LÓPEZ-GARCÍA, ULISES, MONTALVO-GONZÁLEZ, EFIGENIA, ARVIZU-GÓMEZ, JACKELINE, STOLL, ALEXANDRA, AGUILERA, SELENE
Format: Article
Language:English
Subjects:
Alternaria rot
antifungal
bacterial metabolite
biocontrol
postharvest
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Summary:In the present study, the antifungal activity of metabolites produced by Bacillus atrophaeus B5 and a new Brevibacterium strain against Alternaria alternata was evaluated. Assays in vitro and in vivo on tomato fruit during postharvest were made. Based on the 16S rDNA gene sequence analysis, the new strain (strain B7) was identified as Brevibacterium frigoritolerans. Metabolites produced by both bacterial strains reduced the spore germination of A. alternata in vitro and decreased the severity of the alternaria rot disease on tomato fruit during postharvest. This is the first report that demonstrates the potential of B. frigoritolerans B7 as a biocontrol agent against this fungal phytopathogen. The use of metabolites produced by B. atrophaeus B5 and B. frigoritolerans B7 represents a new approach to reduce the use of chemical pesticides and control fungal decay during the postharvest stage.
ISSN:1342-4815
1884-0205
DOI:10.4265/bio.26.67