Anammox Granule Metabolic Interaction Community

Community ID CommunityMech:000146

Ecological State ENGINEERED

Environment anammox granular sludge bioreactor
ENVO:00002001

A laboratory-scale anammox granular-sludge bioreactor community reconstructed with genome-centric metagenomics and metatranscriptomics. Brocadia-affiliated anammox bacteria dominate nitrogen removal, while Chlorobi-affiliated and other heterotrophic bacteria recycle nitrate to nitrite, degrade EPS-derived peptides, and scavenge detrital products from anammox growth.

Taxonomy

Taxon	Ontology ID	Functional Roles	Abundance
Brocadia-affiliated anammox bacterium AMX1	NCBITaxon:795830	PRIMARY_PRODUCER CROSS_FEEDER	N/A
doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL) "Genomes affiliated with Brocadia" doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL) "AMX1 had a relative abundance"
Chlorobi-affiliated heterotrophic bacteria	NCBITaxon:1090	PRIMARY_DEGRADER CROSS_FEEDER	N/A
doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL) "Chlorobi-affiliated bacteria may be highly active protein degraders"
anammox-granule heterotrophic flanking bacteria	NCBITaxon:2	SECONDARY_FERMENTER CROSS_FEEDER	N/A
doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL) "Bacteroidetes, Chloroflexi, Proteobacteria"

Ecological Interactions

Taxon

Cross-feeding

Mutualism

Syntrophy

Competition

Commensalism

Niche partitioning

Colonization facilitation

Strain competition

Predation

Anammox Ammonium-Nitrite Conversion

CROSS_FEEDING

Source Taxon: Brocadia-affiliated anammox bacterium AMX1

Metabolites: ammonium (CHEBI:28938), nitrite (CHEBI:16301)

Evidence

doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL)

"genes involved in anammox metabolism"

Heterotrophic Nitrite Loop

CROSS_FEEDING

Source Taxon: anammox-granule heterotrophic flanking bacteria

Target Taxon: Brocadia-affiliated anammox bacterium AMX1

Metabolites: nitrate (CHEBI:17632), nitrite (CHEBI:16301)

Biological Processes:

denitrification (GO:0019333)

Evidence

doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL)

"potentially completing a nitrite loop"

EPS Peptide Scavenging by Chlorobi

CROSS_FEEDING

Source Taxon: Brocadia-affiliated anammox bacterium AMX1

Target Taxon: Chlorobi-affiliated heterotrophic bacteria

Evidence

doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL)

"catabolizing extracellular peptides"
doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL)

"EPS produced by anammox bacteria"

Detritus and Small-Donor Scavenging

COMMENSALISM

Source Taxon: Brocadia-affiliated anammox bacterium AMX1

Target Taxon: anammox-granule heterotrophic flanking bacteria

Evidence

doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL)

"scavenging of detritus and peptides"

Associated Datasets

Dataset	Type	Repository	Accession
Anammox granule metagenome and metatranscriptome article Open-access article reporting genome-centric metagenomics, metatranscriptomics, and metabolic network reconstruction for a laboratory anammox granule community.	METATRANSCRIPTOME	OTHER	Nature-Communications-15416

Environmental Factors

Factor	Value	Unit
anaerobic granule interior	Oxygen diffusion limited by dense aggregate structure	N/A
doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL) "limit oxygen diffusion into the granule interior"
extracellular polymeric substances	Protein- and polysaccharide-rich EPS matrix	N/A
doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL) "matrix of organic extracellular polymeric substances"
wastewater nitrogen removal context	High-strength ammonium wastewater treatment model	N/A
doi:10.1038/ncomms15416 - SUPPORT (COMPUTATIONAL) "nitrogen removal from wastewater"

Growth Media

anammox granular-sludge bioreactor influent

Atmosphere ANAEROBIC

Preparation notes: Laboratory-scale anammox bioreactor biomass maintained as granular sludge; exact influent recipe is not asserted in this record because the curated claims focus on community metagenomics and metatranscriptomics.

Evidence

doi:10.1038/ncomms15416

"recover 17 draft genomes"