The phloem as a conduit for inter-organ communication

Curr Opin Plant Biol. 2001 Jun;4(3):202-9. doi: 10.1016/s1369-5266(00)00162-x.


The plant vascular system plays a pivotal role in the delivery of nutrients to distantly located organs. Recent discoveries have provided new insight into a novel role for plasmodesmata and the phloem in terms of the transport and delivery of information macromolecules (i.e. proteins and ribonucleoprotein complexes). Non-cell/organ-autonomous control over gene expression may function both in defense signaling and developmental programming in plants.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Review

MeSH terms

  • Biological Transport / physiology
  • Cell Communication*
  • Gene Expression Regulation, Plant
  • Gene Silencing*
  • Macromolecular Substances
  • Plant Physiological Phenomena*
  • Plant Proteins / metabolism
  • RNA Processing, Post-Transcriptional
  • RNA, Plant / metabolism*


  • Macromolecular Substances
  • Plant Proteins
  • RNA, Plant