Anatomy

Phloem

Plant tissue that carries nutrients, especially sucrose, by turgor pressure. Movement is bidirectional, in contrast to XYLEM where it is only upward. Phloem originates and grows outwards from meristematic cells (MERISTEM) in the vascular cambium. P-proteins, a type of LECTINS, are characteristically found in phloem.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Plant tissue that carries nutrients, especially sucrose, by turgor pressure. Movement is bidirectional, in contrast to XYLEM where it is only upward. Phloem originates and grows outwards from meristematic cells (MERISTEM) in the vascular cambium. P-proteins, a type of LECTINS, are characteristically found in phloem.

MeSH Record

Classification

Broader headings

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MeSH Record

Synonyms

1 entry terms
  • Phloems

MeSH Record

Aspects Covered

20 allowable subheadings

Indexed with the subheadings adverse effects, anatomy & histology, chemistry, classification, cytology, drug effects, embryology, enzymology, genetics, growth & development, immunology, metabolism, microbiology, parasitology, physiology, poisoning, radiation effects, toxicity, ultrastructure, virology.

MeSH Record

History Note

2007

MeSH Hierarchy

Tree Number

  1. A18.450w.250w

AMA Style

References

  1. National Library of Medicine. Phloem. Medical Subject Headings (MeSH). 2026. Unique ID D052585. http://id.nlm.nih.gov/mesh/2026/D052585
  2. Phloem. In: Wikipedia. https://en.wikipedia.org/wiki/Phloem
  3. Phloem. In: Wikidata. https://www.wikidata.org/wiki/Q185138