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Antibiotics-induced dysbiosis in gut microbiota affects bumblebee health via regulating host amino acid metabolism
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Antibiotics-induced dysbiosis in gut microbiota affects bumblebee health via regulating host amino acid metabolism
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Journal Article
Antibiotics-induced dysbiosis in gut microbiota affects bumblebee health via regulating host amino acid metabolism
2023
Overview
The gut bacteria can provide nutrition for the host, and regulate host physiological functions and host behavior. In this study, we specifically examined the important roles of free amino acids in the gut microbiota-host interaction. Bumblebees were treated with different concentrations of antibiotics (ampicillin combined with low/high concentrations of tetracycline). Then the effect of antibiotic treatments on the host body weight, gut microbiota, and the free amino acid profiles in the hindgut, hemolymph and brain of bees was evaluated. The results showed that antibiotic treatments resulted in a significant decrease in the host body weight at 11 days of age, the total bacterial load and the abundance of Bifidobacterium bohemicum and Gilliamella apicola in the bumblebee’s hindgut. Additionally, the higher the concentration of antibiotics (tetracycline), the greater their impact on the body weight and intestinal microbiota of bumblebees. Further, we found that antibiotic treatments caused changes of free amino acids in different tissues, especially in the hindgut and hemolymph, including particularly the decrease of several types of essential amino acids and branched-chain amino acids. Our results suggest that the gut microbiota may modulate the host growth via specific essential amino acids and branched-chain amino acids, which further reveals the crucial roles of free amino acids in the gut microbiota-host interplay.
Publisher
Springer Nature B.V
Subject
