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Ultrastructure of the plasmodial slime moldPerichaena vermicularis

I. Plasmodium

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Summary

Mature plasmodia ofPerichaena vermicularis require a light period to induce sporulation. In this paper the ultrastructure and acid phosphatase localization of the mature plasmodium ofPerichaena vermicularis are investigated. Acid phosphatase is localized in vacuoles containing remnants of bacteria and cell organelles. Morphological and histochemical evidence support the interpretation that these vacuoles constitute two types of lysosomes called respectively heterophagic and autophagic vacuoles.

Coated vesicles which apparently originate from smooth endoplasmic reticulum are dispersed throughout the plasmodium and frequently associated with lysosomes. Several dumbbellshaped mitochondria are observed in the plasmodium at the onset of fruiting but not during later stages of plasmodiocarp development. Cytoplasmic microtubules are identified inPerichaena vermicularis. Some of these are closely associated with microfilaments.

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Author notes

  1. Iris Charvat

    Present address: Department of Biological Sciences, University of California, Santa Barbara, USA

Authors and Affiliations

  1. Department of Biological Sciences, University of California, Santa Barbara, USA

    I. K. Ross & J. Cronshaw

Authors
  1. Iris Charvat
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  2. I. K. Ross
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  3. J. Cronshaw
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Additional information

This work was supported by National Science Foundation grants (GB-5884 and GB-8537) to Dr.Ian K.Ross, NSF grant (GB 12371) to Dr.James Cronshaw, and an NSF Traineeship (GZ 445 and 796) to I.Charvat.

This constitutes a portion of a thesis presented to the Regents of the University of California by the first author in partial fulfillment of the requirements for the Ph. D. degree.

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Charvat, I., Ross, I.K. & Cronshaw, J. Ultrastructure of the plasmodial slime moldPerichaena vermicularis . Protoplasma 76, 333–351 (1973). https://doi.org/10.1007/BF01279131

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  • DOI: https://doi.org/10.1007/BF01279131

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