Ontology

PO

Plant Ontology

The Plant Ontology is a structured vocabulary and database resource that links plant anatomy, morphology and growth and development to plant genomics data.

botanyclassificationdataplantearth sciencesessexpression datagenomicslife cycle
A85

FAIR 48/48

Version 2026-01-09

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagebrowser.planteome.org Repositorygithub.com DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in BioPortalNCBO BioPortalBrowse in OBO FoundryOBO Foundry registry

Portals & registries

SourceIDVersionClassesPropertiesIndividualsLoaded
OLS (EMBL-EBI)po2026-01-092,029203925 Oct 2026
TIB Terminology Servicepo2024-04-172,025182918 Apr 2024
OBO Dashboardpo2026-01-092,028——25 Feb 2026

Ontology IRI http://purl.obolibrary.org/obo/po.owl
Version IRI http://purl.obolibrary.org/obo/po/releases/2026-01-09/po.owl

Languages en

Imports from (9)
BFO GO IAO NCBITaxon OBI OMO PATO RO UBERON

Reused by (28)
AGRO ECOCORE ENVO FLOPO FOODON GALLONT GENEPIO NGBO OBA ONS OPMI PPO PSO TO ADDICTO CLO COB EFO EUPATH GO MAXO MICRO OBI PRIDE RBO SLSO SRAO VALUESETS

Logical consistency
consistent · 0 unsatisfiable
OWL 2 DL
yes
ROBOT report
0 errors · 4 warnings · 0 info
OBO principles
FP01FP02FP03FP04FP05FP06FP07FP08FP09FP11FP12FP16FP20
Axioms
25,291 · 9.27% entities reused

Also registered as
aberowl: PO agroportal: PO biodivportal: PO bioportal: PO fairsharing: FAIRsharing.3ngg40 obofoundry: po ols: po ontobee: PO tib.ts: po wikidata.entity: Q7201529

Automated evaluation

F Findable FAIR12/12
  • Persistent identifier (F1)purl.obolibrary.org+4
  • Indexed in services (F4)6: OLS, TIB, BioPortal, OBO Foundry, Bioregistry, FAIRsharing+5
  • Citable reference (F2)doi:10.1093/nar/gkx1152+3
A Accessible FAIR12/12
  • Homepage reachableHTTP 200+3
  • Artefact retrievable over HTTP(S) (A1)download HTTP 200+6
  • Metadata persists in a registry (A2)OBO Foundry, Bioregistry+3
I Interoperable FAIR12/12
  • Formal machine-readable format (I1)OWL, OBO+5
  • Semantic-web IRIs (I2)OWL, OBO+3
  • References other vocabularies (I3)imports 9: bfo, go, iao, ncbitaxon, obi, omo, pato, ro…+4
R Reusable FAIR12/12
  • Clear license (R1.1)CC BY 4.0+5
  • Release provenance (R1.2)2026-01-09 (version IRI in the artefact)+4
  • Community standards (R1.3)OBO principles: 11/13 checks pass+3
Q Ontology consistency & quality20/20
  • Logical consistencyconsistent, 0 unsatisfiable classes (OBO Dashboard)+10
  • OWL 2 DL profilein OWL 2 DL+2
  • Upper-ontology alignmentimports BFO+3
  • Standard relations (RO)imports RO+1
  • ROBOT report: no errors0 errors+2
  • ROBOT report: warning density4 warnings / 2028 classes = 0.00+1
  • Pitfall scan: no critical pitfallsno pitfall scan yet; ROBOT report has 0 errors+1
M Maintenance8/16
  • Recency2026-04-24 → 6.1 months (≤ 1 year)+5
  • Release cadence (12 months)3 releases (GitHub releases)+3
U Community adoption9/16
  • Documented adopting projects4 projects+4
  • Reused by other ontologies28: agro, ecocore, envo, flopo, foodon, gallont…+3
  • Community signalmax(stars 76 → 2, citations 164 → 2)+2
P Penalties (inactivity & inconsistency)0
  • Time since last activity0.5 years → 4 × max(0, 0.5 − 1)0
  • Inactive statusnot archived, legacy or inactive0
  • Consistencyconsistent, no unsatisfiable classes0

FAIR subtotal 48/48 · earned 85/100 = 85/100 → grade A

Community adoption 4

  • planteome.org

    Planteome uses PO to describe location of tissue expression for genes in viridiplantae

    Source: OBO Foundry registry
  • maize.jcvi.org

    Maize CELL genomics DB uses PO to annotate images

    Source: OBO Foundry registry
  • maizegdb.org

    MaizeGDB uses PO for annotation of genes

    Source: OBO Foundry registry
  • gramene.org

    Gramene uses PO for the annotation of plant genes

    Source: OBO Foundry registry

Know a project that uses PO? Suggest it.

History & changes 1 run

History starts with the first archived run; changes appear after the next evaluation.

RunScoreFAIRVersion evaluatedTermsSnapshot
26 Oct 2026, 03:31 UTC85 A482026-01-092,029JSON

Provenance

Every fact on this page was fetched automatically. Each row shows where it came from and when. If a source fails, the last good value is kept and marked “carried forward”.

FactSourceRetrieved
Homepage link check (HTTP 200)browser.planteome.org26 Oct 2026, 03:15 UTC
Repository link check (HTTP 200)github.com26 Oct 2026, 03:15 UTC
Download link check (HTTP 200)purl.obolibrary.org26 Oct 2026, 03:15 UTC
Artefact header (version IRI)raw.githubusercontent.com26 Oct 2026, 03:15 UTC
Git refs (commit 94750e0, latest tag v2026-01-09)github.com26 Oct 2026, 03:15 UTC
GitHub repository statisticsapi.github.com26 Oct 2026, 03:15 UTC
OLS classes, imports, version & releaseebi.ac.uk26 Oct 2026, 03:15 UTC
OBO Foundry status, license & usagesobofoundry.org26 Oct 2026, 02:37 UTC
TIB Terminology Service metricsservice.tib.eu26 Oct 2026, 03:15 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 03:15 UTC
OBO Dashboard (checked 25 Feb 2026)dashboard.obofoundry.org26 Oct 2026, 02:37 UTC
Crossref citations (doi:10.1093/nar/gkx1152)api.crossref.org26 Oct 2026, 03:14 UTC
Crossref citations (doi:10.1007/978-1-4939-3167-5_5)api.crossref.org26 Oct 2026, 03:15 UTC

Run 2026-10-26T02-37-38Z · evaluator v2.0.0 · rubric v3.4 · entry.json · run snapshot

How to cite