Plant Ontology (PO): A controlled vocabulary of plant structures and growth stages

Pankaj Jaiswal, Shulamit Avraham, Katica Ilic, Elizabeth A. Kellogg, Susan McCouch, Anuradha Pujar, Leonore Reiser, Seung Y. Rhee, Martin M. Sachs, Mary Schaeffer, Lincoln Stein, Peter Stevens, Leszek Vincent, Doreen Ware, Felipe Zapata

Research output: Contribution to journalArticlepeer-review


The Plant Ontology Consortium (POC) ( is a collaborative effort among several plant databases and experts in plant systematics, botany and genomics. A primary goal of the POC is to develop simple yet robust and extensible controlled vocabularies that accurately reflect the biology of plant structures and developmental stages. These provide a network of vocabularies linked by relationships (ontology) to facilitate queries that cut across datasets within a database or between multiple databases. The current version of the ontology integrates diverse vocabularies used to describe Arabidopsis, maize and rice (Oryza sp.) anatomy, morphology and growth stages. Using the ontology browser, over 3500 gene annotations from three species-specific databases, The Arabidopsis Information Resource (TAIR) for Arabidopsis, Gramene for rice and MaizeGDB for maize, can now be queried and retrieved.

Original languageEnglish (US)
Pages (from-to)388-397
Number of pages10
JournalComparative and Functional Genomics
Issue number7-8
StatePublished - 2005


  • Controlled vocabulary
  • Gene expression
  • Phenotype
  • Plant anatomy
  • Plant development
  • Plant growth stage
  • Plant morphology
  • Plant ontology

ASJC Scopus subject areas

  • Biotechnology
  • Molecular Biology
  • Genetics

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