scholarly journals ​Golgi Body

2019 ◽  
Author(s):  
Keyword(s):  
Golgi Body

Analysis of the Anterior Secretory Cells of Onchidohs Muricata (Nudibranchia)

1981 ◽  
Vol 39 ◽  
pp. 614-615
Author(s):  
Roy Skidmore
Keyword(s):  
Endoplasmic Reticulum ◽  
Secretory Granules ◽  
Golgi Body ◽  
The Body ◽  
Secretory Cells ◽  
Secretory Vesicles ◽  
High Magnification ◽  
Large Numbers ◽  
Membrane Bound ◽  
Sole Of The Foot

The long-necked secretory cells in Onchidoris muricata are distributed in the anterior sole of the foot. These cells are interspersed among ciliated columnar and conical cells as well as short-necked secretory gland cells. The long-necked cells contribute a significant amount of mucoid materials to the slime on which the nudibranch travels. The body of these cells is found in the subepidermal tissues. A long process extends across the basal lamina and in between cells of the epidermis to the surface of the foot. The secretory granules travel along the process and their contents are expelled by exocytosis at the foot surface.The contents of the cell body include the nucleus, some endoplasmic reticulum, and an extensive Golgi body with large numbers of secretory vesicles (Fig. 1). The secretory vesicles are membrane bound and contain a fibrillar matrix. At high magnification the similarity of the contents in the Golgi saccules and the secretory vesicles becomes apparent (Fig. 2).

Fine Structure of Planarian Neuroglial Cell

1976 ◽  
Vol 34 ◽  
pp. 188-189 ◽  
Author(s):  
Michio Morita ◽  
Jay Boyd Best
Keyword(s):  
Endoplasmic Reticulum ◽  
Ventral Nerve Cord ◽  
Osmium Tetroxide ◽  
Golgi Body ◽  
Nerve Fibers ◽  
Neuroglial Cell ◽  
Glutaraldehyde Solution ◽  
Deep Indentation ◽  
Cytoplasmic Processes ◽  
Longitudinal Nerve

The species of the planarian Dugesia dorotocephala was used as the experimental animal to study a neuroglial cell in the ventral nerve cord. Animals were fixed with 3% buffered glutaraldehyde solution and postfixed with 1% buffered osmium tetroxide.The neuroglial cell is multipolar, expanding into three or four cytoplasmic processes with many daughter branches. Some neuroglial processes are found to extend perpendicular to the longitudinal nerve fibers, whereas others are seen to be parallel to them. The nucleus of the neuroglial cell is irregular in shape and frequently has a deep indentation. Convex portions of the nucleus seem to be related to the areas from which cytoplasmic processes are extended. Granular endoplasmic reticulum (Fig. 4), Golgi body (Fig. 2), mitochondria (Figs. 1 and 2), microtubules (Fig. 4), and many glycogen granules are observable in the electron dense neuroglial cytoplasm. Neuroglial cells are also observed to contain various sizes of phagosomes and lipids (Fig. 2).

scholarly journals ELECTRON MICROSCOPE STUDIES ON THE DICTYOSOMES AND ACROBLASTS IN THE MALE GERM CELLS OF THE CRICKET

1956 ◽  
Vol 2 (4) ◽  
pp. 123-128 ◽  
Author(s):  
H. W. Beams ◽  
T. N. Tahmisian ◽  
R. L. Devine ◽  
Everett Anderson
Keyword(s):  
Electron Microscope ◽  
Golgi Apparatus ◽  
Electron Micrographs ◽  
Germ Cells ◽  
Light Microscope ◽  
Golgi Body ◽  
Duplex Structure ◽  
Male Germ Cells ◽  
Secondary Spermatocyte ◽  
A Chain

The dictyosome (Golgi body) in the secondary spermatocyte of the cricket appears in electron micrographs as a duplex structure composed of (a) a group of parallel double-membraned lamellae and (b) a group of associated vacuoles arranged along the compact lamellae in a chain-like fashion. This arrangement of ultramicroscopic structure for the dictyosomes is strikingly comparable to that described for the Golgi apparatus of vertebrates. Accordingly, the two are considered homologous structures. Associated with the duplex structure of the dictyosomes is a differentiated region composed of small vacuoles. This is thought to represent the pro-acrosome region described in light microscope preparations. In the spermatid the dictyosomes fuse, giving rise to the acroblast. Like the dictyosomes, the acroblasts are made up of double-membraned lamellae and associated vacuoles. In addition, a differentiated acrosome region is present which, in some preparations, may display the acrosome vacuole and granule. Both the dictyosomes and acroblasts are distinct from mitochondria.

Cyclic Changes of the Golgi Body during Microsporogenesis in Tradescantia paluclosa

CYTOLOGIA ◽  
1965 ◽  
Vol 30 (4) ◽  
pp. 354-374 ◽  
Author(s):  
Keizo Maruyama
Keyword(s):  
Golgi Body ◽  
Cyclic Changes

Ultrastructure of the female reproductive organs (ovary, vitellaria, and Mehlis' gland) of Halipegus eccentricus (Trematoda: Derogenidae)

1986 ◽  
Vol 64 (10) ◽  
pp. 2203-2212 ◽  
Author(s):  
Jon M. Holy ◽  
Darwin D. Wittrock
Keyword(s):  
Cell Types ◽  
Reproductive Organs ◽  
Golgi Body ◽  
Digenetic Trematode ◽  
Secretory Cells ◽  
Cortical Granules ◽  
Golgi Bodies ◽  
Transmission Electron ◽  
Vitelline Cells ◽  
Female Reproductive Organs

The female reproductive organs (ovary, vitellaria, and Mehlis' gland) of the digenetic trematode Halipegus eccentricus were studied by transmission electron microscopy. Oocytes entered diplotene while in the ovary and produced cortical granules and lipid bodies. Vitelline cells produced large amounts of eggshell protein but no yolk bodies. Two types of Mehlis' gland secretory cells were present, distinguishable by the morphology of their rough endoplasmic reticulum, Golgi bodies, and secretory bodies, and by the persistence of recognizable secretory material within the ootype lumen after exocytosis. In an attempt to standardize the nomenclature regarding the cell types of the Mehlis' gland, a classification that takes into account these four criteria is proposed. Two basic types of Golgi body organization were noted for the cells of the female reproductive system: a stack of flattened cisternae (Mehlis' gland alpha cells) and spherical Golgi bodies with vesicular cisternae (oocytes, vitelline cells, and Mehlis' gland beta cells).

scholarly journals Golgi Body Motility in the Plant Cell Cortex Correlates with Actin Cytoskeleton Organization

2011 ◽  
Vol 52 (10) ◽  
pp. 1844-1855 ◽  
Author(s):  
Miriam Akkerman ◽  
Elysa J. R. Overdijk ◽  
Jan H. N. Schel ◽  
Anne Mie C. Emons ◽  
Tijs Ketelaar
Keyword(s):  
Actin Cytoskeleton ◽  
Plant Cell ◽  
Golgi Body ◽  
Cell Cortex ◽  
Cytoskeleton Organization ◽  
Actin Cytoskeleton Organization ◽  
Body Motility

Radioautographic and Chemical Studies of Incorporation into Sycamore Vascular Tissue Walls

1968 ◽  
Vol 3 (1) ◽  
pp. 71-80
Author(s):  
F. B. P. WOODING
Keyword(s):  
Cell Wall ◽  
Vascular Tissue ◽  
Golgi Body ◽  
Cell Wall Polysaccharide ◽  
Polysaccharide Synthesis ◽  
Chemical Studies

Chemical and radioautographic studies on sycamore seedling stems have shown an involvement of the Golgi body in cell-wall polysaccharide synthesis from tritiated glucose. Tritiated phenylalanine is shown to be incorporated only into lignin after short incubation times. The patterns of labelling are compared and discussed for the two precursors.

The organization of tip-growth-related organelles and microtubules revealed by quantitative analysis of freeze-substituted oomycete hyphae

1989 ◽  
Vol 93 (1) ◽  
pp. 41-52
Author(s):  
I. BRENT HEATH ◽  
SUSAN G.W. KAMINSKYJ
Keyword(s):  
Golgi Body ◽  
Cell Periphery ◽  
Cross Sectional ◽  
Saprolegnia Ferax ◽  
Cytoskeleton Organization ◽  
Golgi Bodies ◽  
Section Electron ◽  
Serial Section Electron Microscopy ◽  
Body Production ◽  
Actin Cables

The distribution of organelles and microtubules in hyphal tips of the oomycete, Saprolegnia ferax, were quantitatively determined at high resolution from serial-section electron microscopy of freeze-substituted cells. All the organelles and the microtubules were non-uniformly distributed, each showing a characteristic longitudinal gradient starting at a different point behind the tip. In addition, when the cytoplasmic cross-sectional area was divided into radial regions, all organelles occurred preferentially in either the central (mitochondria and Golgi bodies) or the peripheral (microtubules, wall vesicles and spherical vesicles) region. The nuclei were so large as to span both regions but were always oriented with their centrioles facing the plasmalemma. Microtubules occurred in the extreme tips, became more abundant sub-apically, were predominantly short but increased in mean length with distance from the tip. The correlated patterns of organelle and cytoskeleton organization from this and previous work show that neither the microtubules nor the detected arrays of actin are sufficient to account for most organelle arrangements. However, on the basis of the distribution and orientation of the predominantly elongated wall vesicles, we suggest that the wall vesicles travel radially from their origin at the centrally located Golgi bodies to the cell periphery where they are transported longitudinally to the hyphal tip in conjunction with the plasmalemma-associated actin cables. Our data also suggest that the hyphae contain a cortical ectoplasm with which the nuclei interact, at least in part, via their centrioles and centriole-associated microtubules, and whose mechanical integrity is increased by both the peripheral actin cables and a high density of microtubules. We suggest that the endoplasm is less strong and has physiological properties that enhance the differentiation of endoplasmic reticulum and nuclear envelope into Golgi body production.

Memoirs: The Golgi body in the Erythrocytes of the Sauropsida

1925 ◽  
Vol s2-69 (274) ◽  
pp. 357-359
Author(s):  
D. R. BHATTACHARYA ◽  
F. W. ROGERS BRAMBELL
Keyword(s):  
Golgi Body

The Golgi Material and Mitochondria in the Salivary Glands of the Larva of Drosophila Melanogaster

1948 ◽  
Vol s3-89 (8) ◽  
pp. 401-414
Author(s):  
W. SIANG HSU
Keyword(s):  
Salivary Glands ◽  
Golgi Body ◽  
Anterior Portion ◽  
Golgi Bodies ◽  
Gland Cells ◽  
Salivary Gland Cells ◽  
Visible Part ◽  
Show Evidence ◽  
Storage Granules ◽  
Reserve Food

1. The salivary glands in the larvae of Drosophila show evidence of serving two functions: (1) production of digestive secretion, (2) accumulation of reserve food for the period of pupation. The two functions proceed simultaneously within the same cell during certain stages of its development. 2. A single droplet of digestive material has been seen to originate and grow within each Golgi body in the gland-cells. When a certain size is reached the droplet is released into the cytoplasm and by the fusion of two or more of them bigger vacuoles are formed. The secretory material is discharged into the lumen by means of a merocrine mechanism. Neither mitochondria nor nucleus has been observed to take any visible part in the elaboration of secretion droplets. 3. The storage granules found in older and larger cells have been observed to be direct transformations of chondriomites, and neither the Golgi material nor the nucleus shows any sign of participation in the formation of these granules. 4. From the standpoint of morphology and behaviour, the Golgi bodies found in the salivary gland cells are the same as found in the cells of the glandular portion of the proventriculus and the epithelium of the anterior portion of the midgut of the larva. 5. My observations do not lend themselves convincingly to a two-component conception of the structure of Golgi bodies.

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