Tissue-Dependent Heterogeneity of Cell Growth in the Root Apex of Pisum sativum

1986 ◽  
Vol 147 (3) ◽  
pp. 258-269 ◽  
Author(s):  
E. F. Allan ◽  
A. Trewavas
Keyword(s):  
Cell Growth ◽  
Pisum Sativum ◽  
Root Apex

Protective role of mucilage against Al toxicity to root apex of pea (Pisum sativum)

2011 ◽  
Vol 34 (4) ◽  
pp. 1261-1266 ◽  
Author(s):  
Mingjian Geng ◽  
Miaomiao Xu ◽  
Hongdong Xiao ◽  
Huizhen Wang ◽  
Lilan He ◽  
...  
Keyword(s):  
Pisum Sativum ◽  
Root Apex ◽  
Protective Role ◽  
Al Toxicity

Postmitotic ‘isodiametric’ cell growth in the maize root apex

Planta ◽  
1990 ◽  
Vol 181 (3) ◽  
pp. 269-274 ◽  
Author(s):  
F. Baluška ◽  
Š. Kubica ◽  
M. Hauskrecht
Keyword(s):  
Cell Growth ◽  
Root Apex ◽  
Maize Root

Cell Growth and Cellulases: Regulation by Ethylene and Indole-3-acetic Acid in Shoots of Pisum sativum

Nature ◽  
1969 ◽  
Vol 223 (5203) ◽  
pp. 318-319 ◽  
Author(s):  
IRENE RIDGE ◽  
DAPHNE J. OSBORNE
Keyword(s):  
Acetic Acid ◽  
Cell Growth ◽  
Pisum Sativum ◽  
Indole 3 Acetic Acid

Evénements structuraux et métaboliques dans les entre-nœuds des bourgeons axillaires du pois, en réponse à la levée de dominance

1978 ◽  
Vol 56 (10) ◽  
pp. 1213-1228 ◽  
Author(s):  
Arlette Nougarède ◽  
Pierre Rondet
Keyword(s):  
Cell Growth ◽  
Pisum Sativum ◽  
Mitotic Activity ◽  
Dna Content ◽  
Apical Dominance ◽  
Mitotic Cycle ◽  
Homogeneous Reaction ◽  
Basal Portion ◽  
Elongation Phase ◽  
Synthetic Phase

Events associated with the release from dominance are described for internodes 1 and 2 of the axillary buds of Pisum sativum. During the inhibited state, most of the nuclei are found in the G1 phase of a diploid cycle. At the release from dominance, some nuclei in the G2 phase during inhibition enter into mitosis and the nuclei in G1 enter into the DNA synthetic phase. Until the 3rd day, a homogeneous reaction is registered for the whole of the two first internodes. Three maxima of mitotic activity are detected in the epidermis, the cortex, and the procambium and only one in the pith. From the 3rd day, the mitoses are localized at the uppermost part of these internodes: meanwhile, elongation occurs in their basal portion. At this level, the nuclear volumes are maximal at the 6th day. After release from apical dominance, the increase in DNA content reflects the resumption of the mitotic cycle and, subsequently, the onset of differentiation, with 4C level nuclei in the cortex and 8C nuclei in the pith. The cell growth of the epidermis, the cortex, and the pith, either radial or tangential, precedes the elongation phase.

Electron Microscopic Study of the Epithelium of the Seminal Vesicle of Aging Rats

1974 ◽  
Vol 32 ◽  
pp. 138-139
Author(s):  
V. F. Allison ◽  
G. C. Fink ◽  
G. W. Cearley
Keyword(s):  
Cell Growth ◽  
Epithelial Cell ◽  
Epithelial Cells ◽  
Seminal Vesicle ◽  
Seminal Vesicles ◽  
Epithelial Layer ◽  
Epithelial Hyperplasia ◽  
Electron Microscopic ◽  
Aging Rats ◽  
Pseudostratified Epithelium

It is well known that epithelial hyperplasia (benign hypertrophy) is common in the aging prostate of dogs and man. In contrast, little evidence is available for abnormal epithelial cell growth in seminal vesicles of aging animals. Recently, enlarged seminal vesicles were reported in senescent mice, however, that enlargement resulted from increased storage of secretion in the lumen and occurred concomitant to epithelial hypoplasia in that species.The present study is concerned with electron microscopic observations of changes occurring in the pseudostratified epithelium of the seminal vescles of aging rats. Special attention is given to certain non-epithelial cells which have entered the epithelial layer.

Rotary Beveling for In Situ Thin-Section Microscopy of Cell Cultures

1981 ◽  
Vol 39 ◽  
pp. 550-551
Author(s):  
Dean A. Handley ◽  
Jack T. Alexander ◽  
Shu Chien
Keyword(s):  
Cell Growth ◽  
Cell Cultures ◽  
Molecular Interactions ◽  
Convenient Method ◽  
Petri Dish ◽  
Simple Method ◽  
Thin Section Microscopy ◽  
Thin Sectioning ◽  
Organic Fluids

In situ preparation of cell cultures for ultrastructural investigations is a convenient method by which fixation, dehydration and embedment are carried out in the culture petri dish. The in situ method offers the advantage of preserving the native orientation of cell-cell interactions, junctional regions and overlapping configurations. In order to section after embedment, the petri dish is usually separated from the polymerized resin by either differential cryo-contraction or solvation in organic fluids. The remaining resin block must be re-embedded before sectioning. Although removal of the petri dish may not disrupt the native cellular geometry, it does sacrifice what is now recognized as an important characteristic of cell growth: cell-substratum molecular interactions. To preserve the topographic cell-substratum relationship, we developed a simple method of tapered rotary beveling to reduce the petri dish thickness to a dimension suitable for direct thin sectioning.

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