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Diurnal appearance, fine structure, and chemical composition of fatty particles inHeterosigma akashiwo (Raphidophyceae)

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Summary

In cells ofHeterosigma akashiwo cultured under a photoperiod of 12∶12 L∶D, one or several fatty particles have appeared, grew in size approximately the second hour of the dark period, diminished in size from the tenth hour of the dark period, and completely disappeared by the seventh hour of the light period. The particles, usually located on the side of the nucleus away from the flagellar bases, were partially surrounded by endoplasmic reticulum, but not bounded by a membrane. Lipids comprised 80% of the isolated particles fraction, proteins only 1%.

Triacyl-glycerol occupied 80% of the acyllipids in the lipid fraction. Tetradecanoic, hexadecanoic, and hexadecenoic acids comprised 80% of the total fatty acids composition.

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Authors and Affiliations

  1. Institute of Biological Sciences, University of Tsukuba, Sakara-mura, 305, Ibaraki, Japan

    M. Wada, Y. Hara & T. Fujii

  2. Department of Biology, University of Tokyo, Komaba, Meguro-ku, Tokyo

    M. Kato & M. Yamada

Authors
  1. M. Wada
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  2. Y. Hara
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  3. M. Kato
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  4. M. Yamada
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  5. T. Fujii
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Wada, M., Hara, Y., Kato, M. et al. Diurnal appearance, fine structure, and chemical composition of fatty particles inHeterosigma akashiwo (Raphidophyceae). Protoplasma 137, 134–139 (1987). https://doi.org/10.1007/BF01281148

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  • DOI: https://doi.org/10.1007/BF01281148

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