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Curr Opin Plant Biol. 2001 Jun;4(3):202-9.

The phloem as a conduit for inter-organ communication.

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Departmento de Biotecnología y Bioingenería, CINVESTAV-IPN, Avenida IPN 2508, DF 07360, Zacatenco, Mexico.


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.

[Indexed for MEDLINE]

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