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Variation in the fixation image of “Structured granules” in Anabaena

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Summary

The varied appearance of so-called structured granules in vegetative cells and akinetes of Anabaena sp. is dependent upon the length of primary glutaraldehyde fixation, the type and duration of secondary fixation, and the temperature during both fixations as well as possible changes under electron bombardment. The image produced may be one of an open hole, an area of low to medium electron opacity or that of a dense “structured” body and may include all intergradations. These structured granules represent the cyanophycin granules of light microscopy. Various cytochemical tests did not establish their chemical composition.

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Author notes

  1. Knute A. Fisher

    Present address: Department of Botany, University of California, 94720, Berkeley, California, USA

Authors and Affiliations

  1. Department of Botany, University of California, Davis

    Norma J. Lang & Knute A. Fisher

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  1. Norma J. Lang
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  2. Knute A. Fisher
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Lang, N.J., Fisher, K.A. Variation in the fixation image of “Structured granules” in Anabaena . Archiv. Mikrobiol. 67, 173–181 (1969). https://doi.org/10.1007/BF00409683

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  • DOI: https://doi.org/10.1007/BF00409683

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