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Endoplasmic reticulum preprophase band in dividing root-tip cells of Pinus brutia

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Abstract.

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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Authors and Affiliations

  1. University of Athens, Faculty of Biology, Department of Botany, Athens 15784, Greece, , , , ,

    M. Zachariadis,  B. Galatis &  P. Apostolakos

  2. University of Hamburg, Institute of General Botany, 22609 Hamburg, Germany, , , , ,

    H. Quader

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  1. M. Zachariadis
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  2. H. Quader
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  3. B. Galatis
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  4. P. Apostolakos
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Zachariadis, .M., Quader, .H., Galatis, .B. et al. Endoplasmic reticulum preprophase band in dividing root-tip cells of Pinus brutia . Planta 213, 824–827 (2001). https://doi.org/10.1007/s004250100563

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  • DOI: https://doi.org/10.1007/s004250100563

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