photolithotrophic

METPO:1000658 · CLASS · REVIEWED

A trophic type in which an organism uses light as the energy source and inorganic compounds as electron donors, typically with carbon dioxide as the primary carbon source.

Photolithotrophic inorganic electron donor photosynthesis

DOI-backed graph linking light capture, inorganic electron donors such as sulfide and Fe(II), anoxygenic photosynthetic electron transport, and CO2 assimilation.

Photolithotrophic inorganic electron donor photosynthesis Interactive directed graph showing evidence-backed causal relationships for photolithotrophic.

Edge evidence

  • photolithotrophic uses energy source light METPO:2000010

    Photolithotrophic growth is powered by light.

    • DOI:10.3389/fmicb.2017.00323 light as an energy source Supports light as the energy source for photoferrotrophic photolithotrophy.
  • photolithotrophic uses electron donor inorganic electron donor METPO:2000009

    Lithotrophic phototrophs use inorganic electron donors.

    • DOI:10.3390/antiox10060829 oxidizes reduced sulfur compounds Supports inorganic reduced sulfur compounds as electron donors.
  • hydrogen sulfide example of inorganic electron donor rdfs:subClassOf

    Hydrogen sulfide is a representative inorganic electron donor.

    • DOI:10.3390/antiox10060829 hydrogen sulfide Supports H2S as a photolithotrophic sulfur-bacteria substrate.
  • ferrous iron example of inorganic electron donor rdfs:subClassOf

    Fe(II) is a representative inorganic electron donor in photoferrotrophy.

    • DOI:10.3389/fmicb.2017.00323 reduced iron [Fe(II)] as an electron donor Supports Fe(II) as an inorganic electron donor for anoxygenic photosynthesis.
  • inorganic electron donor feeds electrons into anoxygenic photosynthesis METPO:2007402

    Inorganic donors supply electrons to anoxygenic photosynthetic metabolism.

    • DOI:10.3390/antiox10060829 electron donor Supports donor oxidation during anoxygenic photosynthesis.
  • light enables anoxygenic photosynthesis RO:0002327

    Light powers anoxygenic photosynthetic electron transport.

    • DOI:10.3390/antiox10060829 deriving energy from photosynthesis Supports photosynthetic energy capture in photolithotrophic sulfur bacteria.
  • carbon dioxide fixed during anoxygenic photosynthesis

    Many photolithotrophs reduce CO2 during photosynthetic growth.

    • DOI:10.3390/antiox10060829 carbon dioxide Supports CO2 use with inorganic substrate conversion to organic matter.
  • anoxygenic photosynthesis produces biomass METPO:2000202

    Fixed carbon supports biomass formation.

    • DOI:10.3389/fmicb.2017.00323 inorganic carbon is fixed into organic matter Supports organic matter formation from inorganic carbon in photoferrotrophy.
  • light provides energy to photosynthetic reaction center

    Light quanta excite the photosynthetic reaction center to drive electron transport.

    • DOI:10.3389/fmicb.2024.1417714 Anoxygenic photosynthesis proceeds from capture of a light quantum through transport of an excited electron.
  • hydrogen sulfide acts as electron donor for anoxygenic photosynthesis

    H2S is the main electron donor in sulfur-based anoxygenic photosynthesis.

    • DOI:10.3389/fmicb.2024.1417714 In anoxygenic photosynthesis, hydrogen sulfide (H2S) is used as the main electron donor.
  • hydrogen sulfide oxidation produces elemental sulfur METPO:2000202

    Phototrophic oxidation of H2S yields elemental sulfur.

    • DOI:10.3389/fmicb.2024.1417714 GSB oxidize H2S to elemental sulfur.
  • inorganic electron donor supports photosynthetic CO2 fixation

    Oxidation of reduced sulfur compounds supports photosynthetic CO2 fixation.

    • DOI:10.3390/life14050591 Oxidize sulfide, thiosulfate, and elemental sulfur for photosynthetic growth (anoxygenic photosynthetic CO2 fixation).
  • Fe(II) oxidation defines photoferrotrophy METPO:2007500

    Photoferrotrophy is the oxidation of reduced iron via anoxygenic photosynthesis.

    • DOI:10.1038/s41561-024-01560-9 Photoferrotrophy is the oxidation of reduced iron via anoxygenic photosynthesis; anoxygenic phototrophic Fe(II) oxidizers are photoferrotrophs.

Provenance

Source
METPO (2025-11-25)
Author
Luke Wang
Definition source
DOI:10.3390/antiox10060829

Parent traits (1)

Synonyms (1)

  • photolithotroph RELATED_SYNONYM · metpo.owl

kg-microbe context

Matched 1 kg-microbe node via direct_metpo.

  • METPO:1000658 [-1.986, -2.827, -4.047, -0.222, …]

512-dim DeepWalkSkipGramEnsmallen embedding from kg-microbe (2026-04-25).

Nearest neighbors in embedding space

Top-8 cosine-similar METPO traits from the 2026-04-25 deepwalk (512-D).

Curation history

  1. · SEEDED_FROM_METPO · seed_from_metpo

    imported from data/raw/metpo.owl (CLASS)

  2. · ADDED_CAUSAL_GRAPH · codex

    Added DOI-backed causal graph for light-driven anoxygenic photosynthesis with sulfide and Fe(II) as inorganic electron donors.

  3. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 3 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2000010×1, METPO:2000009×1, METPO:2000202×1).

  4. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (rdfs:subClassOf×2).

  5. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2007402×1).

  6. · GROUND_CAUSAL_NODES · claude

    Grounded 2 causal-node grounding field(s) via mappings/node_grounding.tsv (PATO:0001717×1, CHEBI:29033×1).

  7. · GROUND_CAUSAL_NODES · claude

    Grounded 2 causal-node grounding field(s) via mappings/node_grounding.tsv (METPO:1007502×1, METPO:1007501×1).

  8. · RETYPE_CAUSAL_NODES · claude

    Re-typed 1 causal-node node_type field(s) to align with CausalNodeTypeEnum semantics: biomass: BIOLOGICAL_PROCESS → CHEMICAL ×1.

  9. · RENAME_PREDICATE_LABELS · claude

    Renamed 1 causal-edge predicate label(s) to align with existing groundings: powers → enables ×1.

  10. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002327×1).

  11. · ENRICH_CAUSAL_GRAPH · claude

    Added 5 evidence-backed generic edges (6 new nodes) from the deep-research report.

  12. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2000202×1, METPO:2007500×1).

  13. · GROUND_CAUSAL_NODES · claude

    Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (CHEBI:26833×1).