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Identification of peptides from honeybee gut symbionts as potential antimicrobial agents against Melissococcus plutonius
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Identification of peptides from honeybee gut symbionts as potential antimicrobial agents against Melissococcus plutonius
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Journal Article
Identification of peptides from honeybee gut symbionts as potential antimicrobial agents against Melissococcus plutonius
2023
Overview
Eusocial pollinators are crucial elements in global agriculture. The honeybees and bumblebees are associated with a simple yet host-restricted gut community, which protect the hosts against pathogen infections. Recent genome mining has led to the discovery of biosynthesis pathways of bioactive natural products mediating microbe-microbe interactions from the gut microbiota. Here, we investigate the diversity of biosynthetic gene clusters in the bee gut microbiota by analyzing 477 genomes from cultivated bacteria and metagenome-assembled genomes. We identify 744 biosynthetic gene clusters (BGCs) covering multiple chemical classes. While gene clusters for the post-translationally modified peptides are widely distributed in the bee guts, the distribution of the BGC classes varies significantly in different bee species among geographic locations, which is attributed to the strain-level variation of bee gut members in the chemical repertoire. Interestingly, we find that
Gilliamella
strains possessing a thiopeptide-like BGC show potent activity against the pathogenic
Melissococcus plutonius
. The spectrometry-guided genome mining reveals a RiPP-encoding BGC from
Gilliamella
with a 10 amino acid-long core peptide exhibiting antibacterial potentials. This study illustrates the widespread small-molecule-encoding BGCs in the bee gut symbionts and provides insights into the bacteria-derived natural products as potential antimicrobial agents against pathogenic infections.
Here, by characterizing 477 genomes from cultivated bacteria and metagenome-assembled genomes of the bee gut microbiota, the authors uncover uncharacterized biosynthetic gene clusters encoding small molecules with potential antimicrobial activity against bee pathogens, shedding light on the role of microbiome in honeybee health.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
