protophloem

American

[proh-tuh-floh-em] / ˌproʊ təˈfloʊ ɛm /

noun

Botany.

the part of the primary phloem that develops first, consisting of narrow, thin-walled cells.

protophloem Scientific

/ prō′tə-flō′ĕm′ /

The first formed phloem that differentiates from the procambium.

Etymology

Origin of protophloem

First recorded in 1880–85; proto- + phloem

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Rodriguez-Villalon, A., Gujas, B., van Wijk, R., Munnik, T. & Hardtke, C. S. Primary root protophloem differentiation requires balanced phosphatidylinositol-4,5-biphosphate levels and systemically affects root branching.

From Nature

Molecular genetic framework for protophloem formation.

From Nature

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023