Journal
PLANTA
Volume 213, Issue 5, Pages 824-827Publisher
SPRINGER
DOI: 10.1007/s004250100563
Keywords
cell division; endoplasmic reticulum; preprophase band; Pinus (cell division, root); root (cell division)
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In dividing root-tip cells Of Pinus brutia Ten., immunolocalization of the luminal endoplasmic reticulum (ER) proteins, which have the C-terminal HDEL sequence, reveals that the ER is reorganized during the preprophase/prophase stage. Portions of ER were arrayed into a ring-like structure at the site of the microtubule preprophase band (Mt-PPB). This preprophase ER band (ER-PPB) resembles that of the Mt-PPB. The former undergoes a maturation process closely similar to that of the latter. Our data show that the PPB region has a more complex organization than is currently believed. The probable function (s) of the ER-PPB is discussed.
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