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Etude spectrale à basse temperature chez Euglena gracilis Z en culture synchrone sur milieu lactate: Variation de teneur en cytochrome 556

Low temperature spectral study on Euglena gracilis Z during synchronous culture on lactate medium: Variation of cytochrome 556 content

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Summary

Low temperature spectra are described for whole Euglena cells. Euglena growing in synchronous culture with lactate medium show a cyclic variation of cytochrome 556 content during each cellular generation. The greatest quantity of cytochrome 556 seems to coincide with the non-dividing phase of the cells, the phase in which the mitochondrial network is observed. On the other hand after treatment of the Euglena with antimycin A, a correlation exists between the formation of giant mitochondria and an increase in the quantity of cytochrome 556.

These results demonstrate the existence of a cyclic variation of cytochrome 556 synthesis in Euglena during synchronous growth on lactate medium.

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Authors and Affiliations

  1. Cytophysiologie de la Photosynthèse, C.N.R.S., F-91190, Gif-sur-Yvette, France

    R. M. Calvayrac & M. L. Claisse

  2. Centre de Génétique Moléculaire, C.N.R.S., F-91190, Gif-sur-Yvette, France

    R. M. Calvayrac & M. L. Claisse

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  1. R. M. Calvayrac
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  2. M. L. Claisse
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Calvayrac, R.M., Claisse, M.L. Etude spectrale à basse temperature chez Euglena gracilis Z en culture synchrone sur milieu lactate: Variation de teneur en cytochrome 556. Planta 112, 17–24 (1973). https://doi.org/10.1007/BF00386027

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  • DOI: https://doi.org/10.1007/BF00386027

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