primordium

Term Information

Accession
PO:0025127
Aspect
plant anatomy
Synonyms
exact: portion of primordial tissue
exact: portion of primordium tissue
exact: primordia
exact: primordio (Spanish)
exact: 原基(可視的) (Japanese)
Definition
A portion of meristem tissue (PO:0009013) that has as parts protoderm (PO:0006210) and sub-epidermal meristematic tissue and is committed to the development of a particular plant structure (PO:0009011). [source: POC:curators]
Comment
A primordium appears as a protrusion and is the first distinct form of a plant organ (PO:0009008), cardinal organ part (PO:0025001), or collective plant organ structure (PO:0025007). The transition from a primordium to the plant structure it develops into is marked by the development of non-meristematic cells, although meristematic cells may be present after the transition.

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External References

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