sieve plate

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Related to Sieve plates: Sieve cell

sieve plate

n.
The end wall of a sieve-tube element, containing many pores through which food material is conducted.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Esau also studied pore formation in sieve plates, again using Echium (Boraginaceae).
In Vitis, the sieve plates are blocked with massive dormancy callose at the end of one season and are opened by removal of this callose at the beginning of another season.
The virus may appear close to the cell walls of the sieve element, located between the cisternae of the stacked endoplasmic reticulum, or may be found in the P-protein-containing pores of the sieve plates. In somewhat older leaves, the virions occur in plasmodesmata connecting the sieve elements with adjacent parenchymatic cells.