TraitMech

TraitMech › PHYSIOLOGY

energy taxis

traitmech:000590 · CLASS · PROPOSED

A motile phenotype in which directional locomotion is regulated by sensing changes in the electron transport system associated with cellular energy generation.

Trait evidence (2)

  • DOI:10.1128/jb.182.21.6042-6048.2000
    behavioral responses to most stimuli in A. brasilense are triggered by changes in the electron transport system.

    Abstract exact-matched at Europe PMC (PMID:11029423). Publisher Methods, Results and Discussion also inspected. Sp7 (ATCC 29145), wild type for chemotaxis, is distinguished from the cytN mutant FAJ851. Spatial and temporal assays, metabolic inhibition and electron-donor bypass support the sensing interpretation beyond growth correlation. Nitrate and DMSO taxis are reported under anaerobic conditions. The study does not decide whether redox state or ion motive force is the sensed signal; capillary aerotaxis can confound apparent substrate chemotaxis. No universal substrate range is inferred.

  • DOI:10.1128/jb.186.19.6595-6604.2004
    Motility responses triggered by changes in the electron transport system are collectively known as energy taxis.

    Abstract exact-matched at Europe PMC (PMID:15375141); full text not fully inspected. The tlp1 mutant is deficient in responses to oxidizable substrates, terminal electron acceptors and redox conditions. The proposed sensory domain's function remains unknown in this source. Root-colonization impairment supports an ecological hypothesis, not universal host specificity or an identified direct ligand. No complete protein-resolved pathway is inferred from the abstract.

Provenance

Identifier source
TraitMech local identifier
Definition source
DOI:10.1128/jb.186.19.6595-6604.2004

Parent traits (1)

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.

  • Azospirillum brasilense NCBITaxon:192 DOI:10.1128/jb.182.21.6042-6048.2000 Sp7 (ATCC 29145), the study's wild type for chemotaxis, not the cytN mutant FAJ851. Observed substrate, electron-acceptor and repellent responses support energy taxis under the reported conditions. Environmental provenance is independently documented at https://www.atcc.org/products/29145. NCBI resolved 192 on 2026-10-04 at species rank; it is not an exact strain accession or a claim about all strains.

Discussions and Knowledge Gaps (2)

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

Keep energy sensing distinct from stimulus-defined taxis classes.

CURATION TODO OPEN energy-taxis-stimulus-and-mapping-boundaries · raised by codex · 2026-10-04

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.

This entry follows the electron-transport-based usage in the cited primary studies. Energy generation powering motility alone is insufficient: changes must inform locomotor control. Aerotaxis, phototaxis and chemotaxis can involve other sensing mechanisms and are not automatically children or exact synonyms. Metabolism-dependent chemotaxis can instead sense intracellular intermediates, so that broader phrase is not an exact synonym. The existing flagellar-specific chemotaxis record is not used as a universal parent. Resolve external mappings at their authorities and compare process versus organismal-disposition scope before adding xrefs.

Verify the sensed signal and taxon-paired molecular branches.

CURATION TODO OPEN energy-taxis-signal-and-protein-grounding · raised by codex · 2026-10-04

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.

Electron-transport perturbations support energy-dependent locomotor control without identifying one universal receptor or deciding redox-state versus ion-motive-force sensing. Inspect full mutant, complementation and domain-function evidence and resolve taxon-paired protein accessions before adding causal edges. Do not substitute a protein/domain sequence feature for this organismal phenotype or use a NONMECHANISTIC graph to bypass molecular grounding.

Curation history

  1. · MINTED_TRAITMECH_ID · codex

    Added energy taxis with two primary DOI studies, an ATCC provenance URL and exact snippets. Ignored-and-hidden searches found no exact record or METPO term. Reserved METPO:1054400 in v467. Verified Sp7 collection provenance and NCBITaxon:192 species identity. Kept stimulus-defined taxis classes separate and deferred unverified molecular branches and external mappings.

  2. · CORRECTED_EVIDENCE · codex

    Addressed review issue #1660: removed ATCC provenance fields from trait evidence and retained the stable strain-provenance URL in the canonical example note. Both primary DOI studies and their verified abstract snippets remain.