51Թ

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protophloem

[proh-tuh-floh-em]

noun

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



protophloem

  1. The first formed phloem that differentiates from the procambium.

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51Թ History and Origins

Origin of protophloem1

First recorded in 1880–85; proto- + phloem
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Example Sentences

Examples have not been reviewed.

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

Molecular genetic framework for protophloem formation.

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protophilicprotoplanet