phloem

(redirected from companion cell)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to companion cell: Sieve cells

phloem

a transport tissue characterized by the presence of sieve tubes, companion cells and phloem parenchyma cells, found in the VASCULAR BUNDLES of higher plants. Phloem functions in the transport of dissolved organic substances (e.g. sucrose) by TRANSLOCATION.
References in periodicals archive ?
Again, the vascular cambium produces new sieve tube elements, companion cells, fibers, and parenchyma toward the outside of the stem.
Results: The mistletoe lectins I--III in internodes were located mainly in cells of the parenchyma of the cortex, in sclerenchyma tissue next to the vascular bundles and in the companion cells of the phloem.

Full browser ?