Summary
The fine structure of wild living organisms of the chrysophycean alga, Dinobryon sertularia, has been studied after fixation with glutaraldehyde. A description of the cell body as revealed from serial sections is given. The similarity of the cellular organization to that of the related genus, Ochromonas, is emphasized. In addition, the microfibrillar arrangement of the lorica has been studied in negative staining. Possible modes of lorica formation are discussed, especially with the evidence presented that the mid region of the cell body is in direct, although perhaps transitory, contact with the lorica and shows a variety of vesicles suggesting secretory membrane flow.
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Supported by the Deutsche Forschungsgemeinschaft (grant given to W.W.F. and Prof. E. Husemann, Institute of Macromolecular Chemistry, University of Freiburg i.Br.). The authors wish to thank Miss Marianne Winter and Miss Sigrid Krien for skilful technical assistance and Drs. H. Falk (this institute) and E. Schnepf (Lehrstuhl für Zellenlehre der Universität Heidelberg) for valuable discussions.
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Franke, W.W., Herth, W. Cell and lorica fine structure of the chrysomonad alga, Dinobryon sertularia Ehr. (Chrysophyceae). Archiv. Mikrobiol. 91, 323–344 (1973). https://doi.org/10.1007/BF00425052
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DOI: https://doi.org/10.1007/BF00425052