ScienceSeptember 3, 2026

petiole

PET-ee-ohl

Definition

The slender stalk that attaches a leaf blade to the main stem of a plant.

Etymology

Derived from the Latin 'petiolus,' meaning 'little foot' or 'little stalk,' which evolved from the word 'pes' for foot.

In the news

The article uses the term to describe the leaf stalks of plants like celery, noting that the AKT5 molecule regulates their growth to help plants compete in crowded environments.

Researchers Identify "Green Thumb" Molecule That Drives Leaf Stalk Growth in Plants

Read the full article ↗

Asia Research News |

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