Effects of water soluble oncostatic fraction from Rheum officinale Baill. rhizomes on Allium cepa root meristem. III. Morphological changes in cytoplasm

Effects of water soluble oncostatic fraction from Rheum officinale Baill. rhizomes on Allium cepa root meristem. III. Morphological changes in cytoplasm

Spiral concentric and linear configurations of membraneous structures were observed in the cytoplasm of fixed meristematic cells from the root apex of Allium cepa under the light microscope. They appeared after incubation in sublethal and lethal conditions in Rheum ofiicinale rhizome extracts. Durin...

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Main Author: A. Dawidowicz-Grzegorzewska
Format: Article
Language:English
Published: Polish Botanical Society 2015-01-01
Series:Acta Societatis Botanicorum Poloniae
Online Access:https://pbsociety.org.pl/journals/index.php/asbp/article/view/4994
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spelling doaj-305b007606784d57ab970d0c36aee7f62020-11-25T03:16:58ZengPolish Botanical SocietyActa Societatis Botanicorum Poloniae2083-94802015-01-0145445345810.5586/asbp.1976.0404197Effects of water soluble oncostatic fraction from Rheum officinale Baill. rhizomes on Allium cepa root meristem. III. Morphological changes in cytoplasmA. Dawidowicz-Grzegorzewska0Warsaw UniversitySpiral concentric and linear configurations of membraneous structures were observed in the cytoplasm of fixed meristematic cells from the root apex of Allium cepa under the light microscope. They appeared after incubation in sublethal and lethal conditions in Rheum ofiicinale rhizome extracts. During postincubation these structures disappeared. They were interpreted as ER membranes. On the basis of literature data the physiological significance of these structures is discussed. It would seem that they are an indication of enhanced metabolic activity evoked either exogenously by various injuries as a form of defence reaction of the protoplast or endogenously during cytodifferentiation. Prolonged treatment in ,noxious conditions causes the ER membranes to transform into inactive myelin structureshttps://pbsociety.org.pl/journals/index.php/asbp/article/view/4994
collection DOAJ
language English
format Article
sources DOAJ
author A. Dawidowicz-Grzegorzewska
spellingShingle A. Dawidowicz-Grzegorzewska
Effects of water soluble oncostatic fraction from Rheum officinale Baill. rhizomes on Allium cepa root meristem. III. Morphological changes in cytoplasm
Acta Societatis Botanicorum Poloniae
author_facet A. Dawidowicz-Grzegorzewska
author_sort A. Dawidowicz-Grzegorzewska
title Effects of water soluble oncostatic fraction from Rheum officinale Baill. rhizomes on Allium cepa root meristem. III. Morphological changes in cytoplasm
title_short Effects of water soluble oncostatic fraction from Rheum officinale Baill. rhizomes on Allium cepa root meristem. III. Morphological changes in cytoplasm
title_full Effects of water soluble oncostatic fraction from Rheum officinale Baill. rhizomes on Allium cepa root meristem. III. Morphological changes in cytoplasm
title_fullStr Effects of water soluble oncostatic fraction from Rheum officinale Baill. rhizomes on Allium cepa root meristem. III. Morphological changes in cytoplasm
title_full_unstemmed Effects of water soluble oncostatic fraction from Rheum officinale Baill. rhizomes on Allium cepa root meristem. III. Morphological changes in cytoplasm
title_sort effects of water soluble oncostatic fraction from rheum officinale baill. rhizomes on allium cepa root meristem. iii. morphological changes in cytoplasm
publisher Polish Botanical Society
series Acta Societatis Botanicorum Poloniae
issn 2083-9480
publishDate 2015-01-01
description Spiral concentric and linear configurations of membraneous structures were observed in the cytoplasm of fixed meristematic cells from the root apex of Allium cepa under the light microscope. They appeared after incubation in sublethal and lethal conditions in Rheum ofiicinale rhizome extracts. During postincubation these structures disappeared. They were interpreted as ER membranes. On the basis of literature data the physiological significance of these structures is discussed. It would seem that they are an indication of enhanced metabolic activity evoked either exogenously by various injuries as a form of defence reaction of the protoplast or endogenously during cytodifferentiation. Prolonged treatment in ,noxious conditions causes the ER membranes to transform into inactive myelin structures
url https://pbsociety.org.pl/journals/index.php/asbp/article/view/4994
work_keys_str_mv AT adawidowiczgrzegorzewska effectsofwatersolubleoncostaticfractionfromrheumofficinalebaillrhizomesonalliumceparootmeristemiiimorphologicalchangesincytoplasm
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