Archives of Microbiology

, Volume 130, Issue 3, pp 189–194 | Cite as

Spore germination and swarm cell morphogenesis in the acellular slime mold Fuligo septica

  • Rodney K. Nelson
  • Michael Orlowski


This report describes conditions under which spores of the acellular slime mold Fuligo septica underwent a very rapid, synchronous and complete (100%) germination followed by morphogenesis of motile, flagellated swarm cells from the released protoplasts. This developmental sequence was initiated immediately upon wetting the spores with a surfactant and was completed within 40–50 min in the absence of any exogenous nutrient other than sodium phosphate buffer. Oxygen was required for germination. The rate and percentage of germination diminished with increasing spore concentration suggesting the existence of an autoinhibitor. The morphological sequence of events in the differentiation process was examined by scanning electron microscopy.

Key words

Fuligo septica Myxomycetes, mycetozoans Acellular slime molds True slime molds Spore germination Swarm cell morphogenesis Scanning electron microscopy 


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Copyright information

© Springer-Verlag 1981

Authors and Affiliations

  • Rodney K. Nelson
    • 1
  • Michael Orlowski
    • 1
  1. 1.Department of MicrobiologyLouisiana State UniversityBaton RougeUSA

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