The need for high-resolution gut microbiome characterization to design efficient strategies for sustainable aquaculture production

From BugSigDB
Reviewed Marked as Reviewed by Svetlana up on 2024-12-12
study design
Citation
PMID PubMed identifier for scientific articles.
DOI Digital object identifier for electronic documents.
URI
Authors
Gupta S, Vera-Ponce de León A, Kodama M, Hoetzinger M, Clausen CG, Pless L, Verissimo ARA, Stengel B, Calabuig V, Kvingedal R, Skugor S, Westereng B, Harvey TN, Nordborg A, Bertilsson S, Limborg MT, Mørkøre T, Sandve SR, Pope PB, Hvidsten TR, La Rosa SL
Journal
Communications biology
Year
2024
Microbiome-directed dietary interventions such as microbiota-directed fibers (MDFs) have a proven track record in eliciting responses in beneficial gut microbes and are increasingly being promoted as an effective strategy to improve animal production systems. Here we used initial metataxonomic data on fish gut microbiomes as well as a wealth of a priori mammalian microbiome knowledge on α-mannooligosaccharides (MOS) and β-mannan-derived MDFs to study effects of such feed supplements in Atlantic salmon (Salmo salar) and their impact on its gut microbiome composition and functionalities. Our multi-omic analysis revealed that the investigated MDFs (two α-mannans and an acetylated β-galactoglucomannan), at a dose of 0.2% in the diet, had negligible effects on both host gene expression, and gut microbiome structure and function under the studied conditions. While a subsequent trial using a higher (4%) dietary inclusion of β-mannan significantly shifted the gut microbiome composition, there were still no biologically relevant effects on salmon metabolism and physiology. Only a single Burkholderia-Caballeronia-Paraburkholderia (BCP) population demonstrated consistent and significant abundance shifts across both feeding trials, although with no evidence of β-mannan utilization capabilities or changes in gene transcripts for producing metabolites beneficial to the host. In light of these findings, we revisited our omics data to predict and outline previously unreported and potentially beneficial endogenous lactic acid bacteria that should be targeted with future, conceivably more suitable, MDF strategies for salmon.

Experiment 1


Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/17

Curator: YokoC

Revision editor(s): YokoC

Subjects

Location of subjects
Norway
Host species Species from which microbiome was sampled. Contact us to have more species added.
Salmo salar
Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology
Hindgut Metenteron,Hindgut,hindgut
Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
Response to diet Response to diet,response to diet
Group 0 name Corresponds to the control (unexposed) group for case-control studies
0.2% CTR Diet T2
Group 1 name Corresponds to the case (exposed) group for case-control studies
0.2% MC2 Diet T2
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
Salmon fed a standard commercial diet supplemented with 0.2% MC2 (a 0.2% w/w α-mannan supplement produced by Cargill) at 10 weeks (T2, smolt stage) after the experiment started.
Group 0 sample size Number of subjects in the control (unexposed) group
30
Group 1 sample size Number of subjects in the case (exposed) group
30

Lab analysis

Sequencing type
16S
16S variable region One or more hypervariable region(s) of the bacterial 16S gene
V4
Sequencing platform Manufacturer and experimental platform used for quantifying microbial abundance
Illumina

Statistical Analysis

Data transformation Data transformation applied to microbial abundance measurements prior to differential abundance testing (if any).
relative abundances
Statistical test
Mann-Whitney (Wilcoxon)
Significance threshold p-value or FDR threshold used for differential abundance testing (if any)
0.05
MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?
Yes

Alpha Diversity

Shannon Estimator of species richness and species evenness: more weight on species richness
unchanged

Signature 1

Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/18

Curator: YokoC

Revision editor(s): YokoC

Source: Fig. 1G

Description: Significant differential abundances (Wilcoxon test) for bacterial genera in salmons fed a 0.2% MC2 diet or a CTR (control) diet at 10 weeks (T2, smolt stage) after the experiment began.

Abundance in Group 1: increased abundance in 0.2% MC2 Diet T2

NCBI Quality ControlLinks
Cupriavidus
Herbaspirillum
Nitrospirillum
Burkholderia/Caballeronia/Paraburkholderia groupBurkholderia/Caballeronia/Paraburkholderia group

Revision editor(s): YokoC

Experiment 2


Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/18

Curator: YokoC

Revision editor(s): YokoC

Differences from previous experiment shown

Subjects

Group 1 name Corresponds to the case (exposed) group for case-control studies
0.2% MN3 Diet T2
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
Salmon fed with a standard commercial diet supplemented with 0.2% MN3 (0.2% w/w acetylated β-galactoglucomannan) at 10 weeks (T2, smolt stage) after the experiment started.

Lab analysis

Statistical Analysis

Alpha Diversity

Shannon Estimator of species richness and species evenness: more weight on species richness
increased

Signature 1

Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/18

Curator: YokoC

Revision editor(s): YokoC

Source: Fig. 1G

Description: Significant differential abundances (Wilcoxon test) for bacterial genera in salmons fed a 0.2% MN3 diet or a CTR (control) diet at 10 weeks (T2, smolt stage) after the experiment began.

Abundance in Group 1: increased abundance in 0.2% MN3 Diet T2

NCBI Quality ControlLinks
Cupriavidus
Herbaspirillum
Nitrospirillum
Burkholderia/Caballeronia/Paraburkholderia groupBurkholderia/Caballeronia/Paraburkholderia group

Revision editor(s): YokoC

Experiment 3


Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/18

Curator: YokoC

Revision editor(s): YokoC

Differences from previous experiment shown

Subjects

Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology
Actinopterygian pyloric caecum Pyloric appendage,Pyloric caeca,Pyloric caecum,Actinopterygian pyloric caecum,actinopterygian pyloric caecum
Group 0 name Corresponds to the control (unexposed) group for case-control studies
4% CTR Diet Pyloric caecum
Group 1 name Corresponds to the case (exposed) group for case-control studies
4% MN3 Pyloric caecum
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
Salmon fed with a standard commercial diet supplemented with 4% MN3 ( 4% w/w acetylated β-galactoglucomannan) for 4 weeks.
Group 0 sample size Number of subjects in the control (unexposed) group
18
Group 1 sample size Number of subjects in the case (exposed) group
18

Lab analysis

Statistical Analysis

Alpha Diversity

Shannon Estimator of species richness and species evenness: more weight on species richness
unchanged

Signature 1

Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/18

Curator: YokoC

Revision editor(s): YokoC, Aleru Divine

Source: Fig. 2F

Description: Significant differential abundances (Wilcoxon test) for bacterial genera in samples collected from the pyloric caecum of salmons fed a 4% MN3 diet or a CTR diet.

Abundance in Group 1: increased abundance in 4% MN3 Pyloric caecum

NCBI Quality ControlLinks
Comamonadaceae
Pseudomonas
Burkholderia/Caballeronia/Paraburkholderia groupBurkholderia/Caballeronia/Paraburkholderia group

Revision editor(s): YokoC, Aleru Divine

Signature 2

Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/18

Curator: YokoC

Revision editor(s): YokoC

Source: Fig. 2F

Description: Significant differential abundances (Wilcoxon test) for bacterial genera in samples collected from the pyloric caecum of salmons fed a 4% MN3 diet or a CTR diet.

Abundance in Group 1: decreased abundance in 4% MN3 Pyloric caecum

NCBI Quality ControlLinks
Enterococcus
Gallicola
Lactobacillaceae
Lactobacillus
Limosilactobacillus
Peptostreptococcus
Tepidimicrobium

Revision editor(s): YokoC

Experiment 4


Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/18

Curator: YokoC

Revision editor(s): YokoC

Differences from previous experiment shown

Subjects

Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology
Hindgut Metenteron,Hindgut,hindgut
Group 0 name Corresponds to the control (unexposed) group for case-control studies
4% CTR Diet hindgut
Group 1 name Corresponds to the case (exposed) group for case-control studies
4% MN3 Diet hindgut
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
Salmon fed a standard commercial diet supplemented with 4% MN3 (4% w/w acetylated β-galactoglucomannan) for 4 weeks.

Lab analysis

Statistical Analysis

Alpha Diversity

Shannon Estimator of species richness and species evenness: more weight on species richness
increased

Signature 1

Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/18

Curator: YokoC

Revision editor(s): YokoC, Aleru Divine

Source: Fig. 2F

Description: Significant differential abundances (Wilcoxon test) for bacterial genera in samples collected from the hindgut of salmons fed a 4% MN3 diet or a CTR (control) diet.

Abundance in Group 1: increased abundance in 4% MN3 Diet hindgut

NCBI Quality ControlLinks
Comamonadaceae
Pseudomonas
Burkholderia/Caballeronia/Paraburkholderia groupBurkholderia/Caballeronia/Paraburkholderia group

Revision editor(s): YokoC, Aleru Divine

Signature 2

Reviewed Marked as Reviewed by Svetlana up on 2024-12-12

Curated date: 2024/11/18

Curator: YokoC

Revision editor(s): YokoC

Source: Fig. 2F

Description: Significant differential abundances (Wilcoxon test) for bacterial genera in samples collected from the hindgut of salmons fed a 4% MN3 diet or a CTR diet.

Abundance in Group 1: decreased abundance in 4% MN3 Diet hindgut

NCBI Quality ControlLinks
Enterococcus
Lactobacillaceae
Ligilactobacillus
Limosilactobacillus
Peptostreptococcus
Streptococcus

Revision editor(s): YokoC