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Fungal microbiota isolated from native stingless bee species inhibited pathogens of Apis mellifera. | LitMetric

Fungal microbiota isolated from native stingless bee species inhibited pathogens of Apis mellifera.

Fungal Biol

Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales. Instituto de Biotecnología "Dra. María Ebe Reca" (INBIOMIS), Laboratorio de Biotecnología Molecular, Misiones, Argentina; CONICET, Buenos Aires, Argentina.

Published: September 2023

AI Article Synopsis

Article Abstract

Social bees can establish interactions with microorganisms to keep their colonies free of pathogens and parasites by developing different protection strategies. We explored the fungal microbiota isolated from three species of stingless bees, Tetragonisca fiebrigi, Plebeias sp., and Scaptotrigona jujuyensis, and its potential ability to suppress pathogenic microorganisms of A. mellifera, namely Paenibacillus larvae, Ascosphaera apis and Aspergillus flavus, which were tested and evaluated. Six filamentous fungal strains, Trametes hirsuta, Alternaria alternata, Curvularia spicifera, Skeletocutis sp., Alternaria tenuissima, Monascus spp., as well as the yeast Wickerhamomyces anomalus, were selected for trials and isolated from the heads of foraging bees. The fungal strains were identified by macroscopic and microscopic taxonomic characteristics and by sequencing of the ITS1-5.8S-ITS2 region of ribosomal DNA. All fungal strains inhibited these pathogens of A. mellifera. We also evaluated the effect of the secondary metabolites extracted with and without ethanol. Both metabolites showed antimicrobial properties, and our results suggest that fungi isolated from stingless bees produce bioactive compounds with antibacterial and antifungal effects that could be used to treat Apis mellifera colony diseases and maintain colony health.

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Source
http://dx.doi.org/10.1016/j.funbio.2023.07.003DOI Listing

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