identifier: traitmech:000194 label: aerobic anoxygenic phototrophy definition: A photoheterotrophy in which aerobic heterotrophic bacteria use bacteriochlorophyll-containing reaction centers to harvest light as auxiliary energy while requiring organic carbon substrates for growth. definition_source: DOI:10.1128/AEM.01747-12 trait_category: PHYSIOLOGY term_kind: CLASS mapping_status: PROPOSED parent_traits: - METPO:1000657 - traitmech:000035 - METPO:1000602 synonyms: - synonym_text: aerobic anoxygenic phototroph synonym_type: EXACT_SYNONYM source: DOI:10.1128/AEM.01747-12 - synonym_text: aerobic anoxygenic phototrophic bacteria synonym_type: EXACT_SYNONYM source: DOI:10.1186/s40168-024-01786-0 - synonym_text: AAP bacteria synonym_type: RELATED_SYNONYM source: DOI:10.1186/s40168-024-01786-0 - synonym_text: aerobic_anoxygenic_phototrophy synonym_type: RELATED_SYNONYM source: metpo.owl evidence: - reference: DOI:10.1128/AEM.01747-12 snippet: Aerobic anoxygenic phototrophs contain photosynthetic reaction centers composed of bacteriochlorophyll notes: Hauruseu and Koblizek define AAPs by bacteriochlorophyll-containing photosynthetic reaction centers. - reference: DOI:10.1128/AEM.01747-12 snippet: These organisms are photoheterotrophs, as they require organic carbon substrates for their growth whereas light-derived energy has only an auxiliary function notes: The Erythrobacter sp. NAP1 chemostat study supports organic carbon as required for AAP growth and light as an auxiliary energy input. - reference: DOI:10.1186/s40168-024-01786-0 snippet: Aerobic anoxygenic phototrophic (AAP) bacteria are heterotrophic bacteria that supply their metabolism with light energy harvested by bacteriochlorophyll-a-containing reaction centers notes: Villena-Alemany et al. corroborate the AAP scope as heterotrophic bacteria with light-harvesting bacteriochlorophyll-a reaction centers. - reference: DOI:10.1186/s40793-024-00573-6 snippet: Aerobic anoxygenic phototrophs (AAPs) are a polyphyletic group of bacteria capable of photoheterotrophy notes: Stojan et al. place AAPs as a polyphyletic bacterial photoheterotrophic functional group rather than a taxonomic lineage. canonical_examples: - taxon_id: NCBITaxon:237727 taxon_label: Erythrobacter sp. NAP1 note: Carbon-limited aerobic anoxygenic phototroph showing light-enhanced organic-carbon assimilation. reference: DOI:10.1128/AEM.01747-12 causal_graphs: - graph_id: aerobic_anoxygenic_phototrophy_light_organic_carbon title: Aerobic anoxygenic phototrophy couples light to organic carbon assimilation description: Evidence-backed causal sketch linking bacteriochlorophyll-based light harvesting, photophosphorylation, and light-enhanced organic-carbon assimilation in aerobic anoxygenic phototrophs. scope_status: NONMECHANISTIC scope_notes: This first graph captures process-level light harvesting, photophosphorylation, and organic-carbon assimilation without claiming an exact AAP reaction-center protein family. pufLM examples need an audit-verifiable accession/proteome pair before promotion to a mechanistic protein-level graph. nodes: - node_id: aerobic_anoxygenic_phototrophy_trait label: aerobic anoxygenic phototrophy node_type: TRAIT grounding: traitmech:000194 description: Aerobic photoheterotrophy using bacteriochlorophyll-containing reaction centers. - node_id: light label: light node_type: ENVIRONMENTAL_FACTOR grounding: PATO:0001717 description: Auxiliary energy source harvested by AAPs. - node_id: bacteriochlorophyll label: bacteriochlorophyll node_type: CHEMICAL grounding: CHEBI:38201 description: Light-harvesting pigment in AAP reaction centers. - node_id: photophosphorylation label: photophosphorylation node_type: BIOLOGICAL_PROCESS description: Light-driven ATP synthesis in AAPs. - node_id: atp label: ATP node_type: CHEMICAL grounding: CHEBI:30616 description: Energy carrier produced by photophosphorylation. - node_id: organic_carbon label: organic carbon node_type: CHEMICAL grounding: CHEBI:50860 description: Required organic substrate used as carbon source. - node_id: biomass label: biomass node_type: CHEMICAL grounding: METPO:1007501 description: Cell material accumulated from supplied organic carbon. edges: - subject: aerobic_anoxygenic_phototrophy_trait predicate: has energy source object: light description: AAPs supplement their heterotrophic metabolism with light energy. evidence: - reference: DOI:10.1186/s40168-024-01786-0 snippet: supply their metabolism with light energy notes: Verified against the Springer full text. predicate_id: METPO:2007807 - subject: aerobic_anoxygenic_phototrophy_trait predicate: has carbon source object: organic_carbon description: AAP growth relies on external organic carbon. evidence: - reference: DOI:10.1186/s40168-024-01786-0 snippet: rely upon external sources of organic carbon notes: Verified against the Springer full text. predicate_id: METPO:2007806 - subject: bacteriochlorophyll predicate: captures object: light description: Bacteriochlorophyll-containing AAP reaction centers harvest light. evidence: - reference: DOI:10.1186/s40168-024-01786-0 snippet: energy obtained from light through bacteriochlorophyll-a (BChl-a) type II reaction centers notes: Verified against the Springer full text. - subject: light predicate: enables object: photophosphorylation description: Light drives the AAP photophosphorylation branch. evidence: - reference: DOI:10.1186/s40793-024-00573-6 snippet: harvest light energy and generate ATP by photophosphorylation notes: Verified against the Springer full text. predicate_id: RO:0002327 - subject: photophosphorylation predicate: has output object: atp description: AAP photophosphorylation conserves light energy as ATP. evidence: - reference: DOI:10.1128/AEM.01747-12 snippet: respiration decreased to approximately 25% of its dark value and was replaced by photophosphorylation notes: Supports replacement of respiration by photophosphorylation as light intensity increased in carbon-limited Erythrobacter sp. NAP1 cultures. predicate_id: RO:0002234 - subject: organic_carbon predicate: assimilated into object: biomass description: Light lets AAPs accumulate supplied organic carbon as biomass. evidence: - reference: DOI:10.1128/AEM.01747-12 snippet: accumulate the supplied organic carbon which would otherwise be respired notes: Supports light-enhanced organic-carbon assimilation into biomass by AAPs. discussions: - discussion_id: aerobic-anoxygenic-phototrophy-xref-gap prompt: Resolve an exact external ontology class for aerobic anoxygenic phototrophy before adding a TraitRecord xref. kind: CURATION_TODO status: OPEN rationale: The pinned METPO snapshot carries aerobic_anoxygenic_phototrophy only as a related synonym on broad phototrophic, and GO photosynthetic electron transport classes denote the intracellular pathway rather than this organism-level aerobic photoheterotrophic trait. posed_by: codex posed_date: '2026-09-14' curation_history: - timestamp: '2026-09-14T23:14:00Z' curator: codex action: MINTED_TRAITMECH_ID changes: Minted aerobic anoxygenic phototrophy as a DOI-backed photoheterotrophy, anoxygenic photosynthesis, and aerobic trait after a repository-wide duplicate review covering ignored and hidden files; the pinned METPO snapshot only stores aerobic_anoxygenic_phototrophy as a related synonym on broad phototrophic. llm_assisted: true