Harold J Schreier, Ryan C McDonald, Joy EM Watts. (2019). Effect of Diet on the Enteric Microbiome of the Wood-Eating Catfish Panaque nigrolineatus. Frontiers in Microbiology, 10: 2687. Doi: 10.3389/fmicb.2019.02687
, which, depending on environmental conditions, can switch between xylivorous and detritivorous dietary strategies. This is highly unusual among primary wood consumers and provides a unique system to examine the effect of dietary change in a xylivorous system. In this study, microbiome and predictive metagenomic analyses were performed for P. nigrolineatus fed either wood alone or a less refractory mixed diet containing wood and plant nutrition. While diet had an impact on enteric bacterial community composition, there was a high degree of interindividual variability. Members of the Proteobacteria and Planctomycetes were ubiquitous and dominated most communities; Bacteroidetes, Fusobacteria, Actinobacteria, and Verrucomicrobia also contributed in a tissue and diet-specific manner. Although predictive metagenomics revealed functional differences between communities, the relative abundance of predicted lignocellulose-active enzymes remained similar across diets. The microbiomes from both diets appeared highly adapted for hemicellulose hydrolysis as the predicted metagenomes contained several classes of hemicellulases and lignin-modifying enzymes. Enteric communities from both diets appeared to lack the necessary cellobiohydrolases for efficient cellulose hydrolysis, suggesting that cellobiose is not the primary source of dietary carbon for the fish. Our findings suggest that the P. nigrolineatus gut environment selects for an enteric community based on function, rather than a vertically transferred symbiotic relationship. This functional selection strategy may provide an advantage to an organism that switches between dietary strategies to survive a highly variable environment.
McDonald, R. C., Watts, J. E., & Schreier, H. J. (2020). Corrigendum: Effect of Diet on the Enteric Microbiome of the Wood-Eating Catfish Panaque nigrolineatus. Front. Microbiol., 11: 331.
Published online 2020 Feb 27. doi: 10.3389/fmicb.2020.00331
In the original article, there was a mistake in Table 3 as published. All exponents were incorrectly shown as positive values when they should have been negative. The corrected Table 3 appears below.
The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.
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Table 3. Relative abundance of the three classes of cellulose degrading enzymes based on predictive metagenomics.
