Protoplasma

, Volume 76, Issue 2, pp 139–159 | Cite as

Aspects of spore production in the red algaCeramium

  • A. H. L. Chamberlain
  • L. V. Evans
Article
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Summary

Tetraspore development from the post-meiotic to the mature stage has been studied using light and electron microscopy and histochemistry. The structure of the mature carpospore is identical to that of the tetraspore suggesting a similar developmental sequence.

The tetrasporangial wall consists of 3 main fibrillar layers, the origin of the inner of which appears to be the wall-plasmalemma interface. The development of furrows cleaving the protoplast into 4 results in the formation of new plasmalemma and subsequently new wall fibrils. The Golgi apparatus is important in the formation of two well-defined substances. The first is fibrillar and is secretedvia vacuole-like structures into the sporangial wall. After spore release, this functions as a protective mucilaginous layer. The second has a distinctive fine structural morphology and probably functions as an adhesive.

Observations on spore releasein vivo reveals a similar process for both types of spore. Each spore is surrounded by mucilage which may assist in initial attachment prior to the secretion of the adhesive.

Keywords

Electron Microscopy Fibril Golgi Apparatus Mature Stage Similar Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag 1973

Authors and Affiliations

  • A. H. L. Chamberlain
    • 1
  • L. V. Evans
    • 1
  1. 1.Department of Plant SciencesThe UniversityLeedsEngland

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