Black Soldier Fly Larvae Gut SynCom (Bacillus + Lactobacillus + Issatchenkia)

Community ID CommunityMech:000284

Ecological State ENGINEERED

Environment black soldier fly larvae gut (gnotobiotic host)
ENVO:01001033

A tripartite synthetic microbial community (SynCom) engineered from the core gut microbiota of black soldier fly larvae (BSFL) to enhance protein bioconversion from organic wastes. The SynCom combines the bacteria Bacillus and Lactobacillus with the yeast Issatchenkia and was assembled and tested in germ-free (gnotobiotic) larval hosts using multi-omics. Bacillus provides direct proteolytic activity, whereas Lactobacillus and Issatchenkia are associated with improved protein-conversion performance and amino-acid metabolic responses. The tripartite SynCom showed the highest protein conversion performance and distinct spatiotemporal distribution along the gut pH gradient, increasing final larval protein content by 63%.

Taxonomy

Taxon	Ontology ID	Functional Roles	Abundance
Bacillus	NCBITaxon:1386	PRIMARY_DEGRADER	N/A
PMID:42167379 - SUPPORT (IN_VIVO) "Bacillus showed direct proteolytic activity, whereas Lactobacillus and Issatchenkia were associated with improved protein conversion performance in the tested SynCom."
Lactobacillus	NCBITaxon:1578	CROSS_FEEDER	N/A
PMID:42167379 - SUPPORT (IN_VIVO) "We identified the bacteria Bacillus and Lactobacillus and the yeast Issatchenkia functionally relevant taxa associated with improved host protein conversion and amino-acid metabolic responses under the tested gnotobiotic conditions."
Issatchenkia (yeast)	NCBITaxon:4919	CROSS_FEEDER	N/A
PMID:42167379 - SUPPORT (IN_VIVO) "We identified the bacteria Bacillus and Lactobacillus and the yeast Issatchenkia functionally relevant taxa associated with improved host protein conversion and amino-acid metabolic responses under the tested gnotobiotic conditions."

Ecological Interactions

Taxon

Cross-feeding

Mutualism

Syntrophy

Competition

Commensalism

Niche partitioning

Colonization facilitation

Strain competition

Predation

Spatiotemporal niche partitioning along the gut pH gradient

NICHE_PARTITIONING

Evidence

PMID:42167379 - SUPPORT (IN_VIVO)

"a tripartite SynCom comprising these taxa showed the highest protein conversion performance and was associated with distinct spatiotemporal distribution patterns along the gut pH gradient, increasing final larval protein content by 63%."

Proteolysis-driven division of labor for protein conversion

CROSS_FEEDING

Evidence

PMID:42167379 - SUPPORT (IN_VIVO)

"Bacillus showed direct proteolytic activity, whereas Lactobacillus and Issatchenkia were associated with improved protein conversion performance in the tested SynCom."

Growth Media

Gnotobiotic BSFL host reared on organic-waste feedstock

Composition

Component	Concentration	Unit	CHEBI
chicken manure	N/A	N/A	N/A
kitchen waste	N/A	N/A	N/A

Preparation notes: In-vivo cultivation of the SynCom in germ-free (gnotobiotic) black soldier fly larvae under controlled conditions; the larvae were reared on organic-waste feedstocks (chicken manure and kitchen waste). No defined medium composition, temperature, pH value, atmosphere, incubation time, or shaking is reported in the accessible source (full text paywalled in Bioresource Technology; abstract only). The larval gut presents a spatial pH gradient along which the SynCom members show distinct spatiotemporal distribution.

Evidence

PMID:42167379

"employed multi-omics and synthetic microbial communities (SynCom) in germ-free models to examine microbiota-associated protein conversion under controlled conditions"

PMID:42167379

"when applied to chicken manure and kitchen waste, the SynCom-BSFL system showed improvements in selected performance metrics"

PMID:42167379

"distinct spatiotemporal distribution patterns along the gut pH gradient"