aerobic anoxygenic phototrophy

traitmech:000194 · CLASS · PROPOSED

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.

Trait evidence (4)

DOI:10.1128/AEM.01747-12
Aerobic anoxygenic phototrophs contain photosynthetic reaction centers composed of bacteriochlorophyll

Hauruseu and Koblizek define AAPs by bacteriochlorophyll-containing photosynthetic reaction centers.
DOI:10.1128/AEM.01747-12
These organisms are photoheterotrophs, as they require organic carbon substrates for their growth whereas light-derived energy has only an auxiliary function

The Erythrobacter sp. NAP1 chemostat study supports organic carbon as required for AAP growth and light as an auxiliary energy input.
DOI:10.1186/s40168-024-01786-0
Aerobic anoxygenic phototrophic (AAP) bacteria are heterotrophic bacteria that supply their metabolism with light energy harvested by bacteriochlorophyll-a-containing reaction centers

Villena-Alemany et al. corroborate the AAP scope as heterotrophic bacteria with light-harvesting bacteriochlorophyll-a reaction centers.
DOI:10.1186/s40793-024-00573-6
Aerobic anoxygenic phototrophs (AAPs) are a polyphyletic group of bacteria capable of photoheterotrophy

Stojan et al. place AAPs as a polyphyletic bacterial photoheterotrophic functional group rather than a taxonomic lineage.

Aerobic anoxygenic phototrophy couples light to organic carbon assimilation

Evidence-backed causal sketch linking bacteriochlorophyll-based light harvesting, photophosphorylation, and light-enhanced organic-carbon assimilation in aerobic anoxygenic phototrophs.

NONMECHANISTIC · 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.

Edge evidence

aerobic anoxygenic phototrophy has energy source light METPO:2007807
AAPs supplement their heterotrophic metabolism with light energy.
- DOI:10.1186/s40168-024-01786-0 supply their metabolism with light energy Verified against the Springer full text.
aerobic anoxygenic phototrophy has carbon source organic carbon METPO:2007806
AAP growth relies on external organic carbon.
- DOI:10.1186/s40168-024-01786-0 rely upon external sources of organic carbon Verified against the Springer full text.
bacteriochlorophyll captures light
Bacteriochlorophyll-containing AAP reaction centers harvest light.
- DOI:10.1186/s40168-024-01786-0 energy obtained from light through bacteriochlorophyll-a (BChl-a) type II reaction centers Verified against the Springer full text.
light enables photophosphorylation RO:0002327
Light drives the AAP photophosphorylation branch.
- DOI:10.1186/s40793-024-00573-6 harvest light energy and generate ATP by photophosphorylation Verified against the Springer full text.
photophosphorylation has output ATP RO:0002234
AAP photophosphorylation conserves light energy as ATP.
- DOI:10.1128/AEM.01747-12 respiration decreased to approximately 25% of its dark value and was replaced by photophosphorylation Supports replacement of respiration by photophosphorylation as light intensity increased in carbon-limited Erythrobacter sp. NAP1 cultures.
organic carbon assimilated into biomass
Light lets AAPs accumulate supplied organic carbon as biomass.
- DOI:10.1128/AEM.01747-12 accumulate the supplied organic carbon which would otherwise be respired Supports light-enhanced organic-carbon assimilation into biomass by AAPs.

Provenance

Identifier source: TraitMech local identifier
Definition source: DOI:10.1128/AEM.01747-12

Parent traits (3)

Synonyms (4)

aerobic anoxygenic phototroph EXACT_SYNONYM · DOI:10.1128/AEM.01747-12
aerobic anoxygenic phototrophic bacteria EXACT_SYNONYM · DOI:10.1186/s40168-024-01786-0
AAP bacteria RELATED_SYNONYM · DOI:10.1186/s40168-024-01786-0
aerobic_anoxygenic_phototrophy RELATED_SYNONYM · metpo.owl

kg-microbe context

No kg-microbe node embedding matched this record in the 2026-04-25 deepwalk.

Canonical examples (1)

Organisms cited as exemplars of this trait. Taxon ids are NCBITaxon and link out to the NCBI record.

Erythrobacter sp. NAP1 NCBITaxon:237727 DOI:10.1128/AEM.01747-12 Carbon-limited aerobic anoxygenic phototroph showing light-enhanced organic-carbon assimilation.

Discussions and Knowledge Gaps (1)

Open questions attached to this trait. Seeded by just knowledge-gap-scan and curated; see the corpus-wide index.

Resolve an exact external ontology class for aerobic anoxygenic phototrophy before adding a TraitRecord xref.

CURATION TODO OPEN aerobic-anoxygenic-phototrophy-xref-gap · raised by codex · 2026-09-14

Not yet attached to a section of this record — a curator sets attaches_to (e.g. causal_graphs#some_edge) so the gap shows beside the mechanism it concerns.

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.

Curation history

2026-09-14T23:14:00Z · MINTED_TRAITMECH_ID · codex
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.