Development of the preprophase band from random cytoplasmic microtubules in guard mother cells of Allium cepa L.

Planta ◽  
1989 ◽  
Vol 178 (3) ◽  
pp. 291-296 ◽  
Author(s):  
Y. Mineyuki ◽  
J. Marc ◽  
B. A. Palevitz
Keyword(s):  
Allium Cepa ◽  
Preprophase Band ◽  
Allium Cepa L ◽  
Cytoplasmic Microtubules ◽  
Guard Mother Cells ◽  
Mother Cells

scholarly journals Influence of extract from shoots of Taxus baccata var. elegantissima on ultrastructure and tubulin cytoskeleton of meristematic cells of Allium cepa L. roots

2014 ◽  
Vol 71 (3) ◽  
pp. 211-221 ◽  
Author(s):  
Agnieszka Majewska ◽  
Mirosława Furmanowa ◽  
Kazimierz Głowniak ◽  
Joanna Guzewska ◽  
Alicja Zobel ◽  
...  
Keyword(s):  
Allium Cepa ◽  
Chromatin Condensation ◽  
Preprophase Band ◽  
Taxus Baccata ◽  
Cell Nuclei ◽  
Root Tips ◽  
Meristematic Cells ◽  
Allium Cepa L ◽  
Interphase Cells ◽  
Average Size

We investigated the influence of extract from <em>Taxus baccata</em> var. Elegantissima (TbE) shoots in 1:8 dilution, containing paclitaxel in concentration of 81,6 µg/g fresh mass on ultrastructure and tubulin cytoskeleton of meristematic cells of <em>Allium cepa</em> L. root tips. Incubation time 3, 6, 12 and 24 h was followed with postincubation in water for 12 and 24 h. During shorter incubation (till 12 h) the surface of the cell nuclei decreased and chromatin became condensed (in comparison to control) but after 24 h the average surface increased and chromatin condensation decreased. In the course of incubation the average size of plastids and vacuoles increased. Moreover, after treatment mitochondria and plastids showed degradation of ultrastructure, which was reversed after 12 h of postincubation. Immunocytochemical assays demonstrated that in the course of incubation in the ThE extract, the tubulin cytoskeleton became partially disorganised. In most interphase cells, cortical microtubules (MTs) lost their oval transverse orientation. The preprophase band (PPB) position in the cell was often asymmetrical. The MTs array of the karyokinetic spindle and phragmoplast was also disturbed. These alterations were completely reversed during postincubation.

Microtubule reorganization accompanying preprophase band formation in guard mother cells ofAvena sativa L.

PROTOPLASMA ◽  
1989 ◽  
Vol 149 (2-3) ◽  
pp. 89-94 ◽  
Author(s):  
J. B. Mullinax ◽  
B. A. Palevitz
Keyword(s):  
Preprophase Band ◽  
Band Formation ◽  
Guard Mother Cells ◽  
Mother Cells

scholarly journals Loosening of a Preprophase Band of Microtubules in Onion (Allium cepa L.) Root Tip Cells by Kinase Inhibitors.

1999 ◽  
Vol 24 (5) ◽  
pp. 419-424 ◽  
Author(s):  
Akiko Nogami ◽  
Yoshinobu Mineyuki
Keyword(s):  
Allium Cepa ◽  
Kinase Inhibitors ◽  
Preprophase Band ◽  
Root Tip ◽  
Allium Cepa L ◽  
Tip Cells ◽  
Root Tip Cells

The subcellular organization of stomatal initials in sugarcane leaves: the guard and subsidiary mother cells

1977 ◽  
Vol 55 (22) ◽  
pp. 2801-2809 ◽  
Author(s):  
A. P. Singh
Keyword(s):  
Electron Microscopy ◽  
Endoplasmic Reticulum ◽  
Close Association ◽  
Preprophase Band ◽  
Central Position ◽  
Guard Mother Cell ◽  
Subcellular Organization ◽  
Guard Mother Cells ◽  
Mother Cells ◽  
Preprophase Bands

The subcellular organization of guard and subsidiary mother cells in sugarcane leaves was examined by electron microscopy. Guard and subsidiary mother cells assume a characteristic shape before mitosis and contain variable numbers of mitochondria, proplastids, dictyosomes, and cisternae of rough endoplasmic reticulum. In guard mother cells, the nucleus occupies a central position, whereas in subsidiary mother cells, the nucleus is located toward one end of the cell, near the guard mother cell. Microtubules are found in both guard and subsidiary mother cells and are either closely grouped to form defined preprophase bands or randomly dispersed between the nucleus and the preprophase bands. Many of the dispersed microtubules occur in close association with the nucleus in both guard and subsidiary mother cells. Possible functions for these preprophase microtubules are discussed in relation to their organization in the preprophase band, their orientation, and their distribution within guard and subsidiary mother cells.

Occurrence of multivalents and additional chromosomes in the pollen mother cells of Allium cepa L.

The Nucleus ◽  
2011 ◽  
Vol 54 (3) ◽  
pp. 137-140 ◽  
Author(s):  
Geeta Sharma ◽  
Ravinder N. Gohil
Keyword(s):  
Allium Cepa ◽  
Pollen Mother Cells ◽  
Allium Cepa L ◽  
Mother Cells

Influence des conditions de conservation des bulbes d'échalote (Allium cepa L. var. aggregatum) sur leur levée

Agronomie ◽  
1982 ◽  
Vol 2 (9) ◽  
pp. 905-908 ◽  
Author(s):  
Joseph COHAT
Keyword(s):  
Allium Cepa ◽  
Allium Cepa L

Цитогенетические эффекты гамма-излучения в проростках Allium cepa L.

2018 ◽  
Vol 481 (1) ◽  
pp. 99-103
Author(s):  
А.Я. Болсуновский ◽  
Д.В. Дементьев ◽  
Е.М. Иняткина ◽  
Ю.В. Кладько ◽  
М.В. Петриченков ◽  
...  
Keyword(s):  
Allium Cepa ◽  
Allium Cepa L

Variation of Antioxidant Capacity in Different Layers of Onion (Allium cepa L.) At Two Different Stages of Maturation

2012 ◽  
Vol 8 (2) ◽  
pp. 126-130 ◽  
Author(s):  
Nidhi Jaiswal ◽  
Syed Ibrahim Rizvi
Keyword(s):  
Antioxidant Capacity ◽  
Allium Cepa ◽  
Allium Cepa L

Real-Time Quality Monitoring System of Onion (Allium cepa L.) Converging ICT

2016 ◽  
Author(s):  
J Y Kim ◽  
◽  
J Koo ◽  
J H Kim ◽  
B S Kim ◽  
...  
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Allium Cepa ◽  
Quality Monitoring ◽  
Allium Cepa L
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