EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Digestion of prey in foraminifera is not anomalous a correlation of light microscopic cytochemical and high voltage electron microscope technique to study phagotrophy in two allogromiids


Tissue & Cell 17(6): 823-840
Digestion of prey in foraminifera is not anomalous a correlation of light microscopic cytochemical and high voltage electron microscope technique to study phagotrophy in two allogromiids
Correlative light, high-voltage electron and conventional electron microscopic methods were used to investigate digestion in two allogromid foraminiferans, Allogromia sp., strain NF, and A. laticollaris Arnold. Microscopic observations showed that bacterial prey are phagocytosed by reticulopodia and are transported to the allogromid cell body within blister-like phagosomes. Larger prey (algae, diatoms) are transported along the reticulopodial surface and are either stored extrathalamously or phagocytosed at the oral opening (peduncle). Studies of allogromiids optimally fixed and labeled with an extracellular-space label (colloidal thorium) showed that phagocytosed prey are completely enclosed by a plasma membrane envelope; this finding was corroborated by a serial-section three-dimensional reconstruction of the oral zone of one allogromiid. Cytochemical staining for acid phosphatase showed that lysosomes are absent from reticulopods but abundant in the cell body, particularly in the oral zone cytoplasm. We conclude that digestion in allogromiid foraminifer is accomplished by a vacuole-based digestive apparatus and not by extracellular digestion within a lacunary system, as has been suggested in earlier studies.


Accession: 005161590



Related references

Digestion of prey in foraminifera is not anomalous: a correlation of light microscopic, cytochemical, and HVEM technics to study phagotrophy in two allogromiids. Tissue & Cell 17(6): 823-839, 1985

Digestion of prey in Foraminifera is not anomalous: a correlation of light microscopic, cytochemical amd HVEM technics to study phagotrophy in two allogromiids. Tissue and Cell, 176: 823-839, 1985

Electron microscopic cytochemical study of phagotrophy in the benthic foraminifer allogromia sp. Journal of Protozoology 29(3): 474-475, 1982

Preparation of skeletal muscle for inter microscopic light microscope scanning electron microscope transmission electron microscope correlation. Scanning Electron Microscopy (2): 267-274, 1978

Inter microscopic light microscope scanning electron microscope transmission electron microscope correlation. Hayat, M A (Ed ) Principles And Techniques Of Scanning Electron Microscopy Biological Applications, Vol 5 Xi+242p Illus Van Nostrand Reinhold Company: New York, N Y Usa; London, England Isbn 0-442-25692-2 94-121, 1976

Characteristic of heavy metal content secretion granules in the islet tissue of adult white rats after investigation in the light microscope and electron microscope including high voltage electron microscopy and electron micro analysis. Acta Histochemica 61(2): 330-338, 1978

A correlative light and electron microscopic study of phagotrophy and motility in Allogromia Protozoa, Foraminiferida. Dissertation Abstracts International B Sciences and Engineering 45.6: 1648, 1984

Combining light microscopic and electron microscopic findings on individual cells a theoretical and methodological study exemplified by combined electron microscopy and light microscope auto radiography. Microscopica Acta 75(1): 48-60, 1973

Trifluoperazine inhibition of fibrinogen receptor redistribution in surface activated platelets: correlative video-enhanced differential interference contrast light microscopic, high voltage electron microscopic and scanning electron microscopic studies. Scanning Microscopy 1(2): 735-743, 1987

Trifluoperazine inhibition of fibrinogen receptor redistribution in surface activated platelets correlative video enhanced differential interference contrast light microscopic high voltage electron microscopic and scanning electron microscopic studies. Scanning Microscopy 1(2): 735-744, 1987