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Protein composition of different stages in the life cycle of Ulva mutabilis, Føyn

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Summary

Soluble protein, about 15% of the total cellular protein, was extracted from different stages in the haplodiplontic life cycle of Ulva mutabilis. The electrophoretic band pattern of the protein extracts from the haploid gametophyte and the diploid sporophyte were found to be the same, except for one slow moving band present in the gametophyte, but lacking in the diploid sporophyte. This band was also missing in the extract from the haploid parthenosporophyte, but is seen in the extract from the zoospores. It was found that the synthesis of the protein in this band occurred during most of the preparation period preceding meiosis. The band is not seen in extracts from gametes, and it is inferred that this protein is broken down during the period preceding the mitotic gametangial division in the gametophyte. So far the protein making up this band behaves as should be required for a factor determining the shift in generation during the life cycle.

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  1. Institute of General Genetics, University of Oslo, Blindern, Box 1031, Oslo 3, Norway

    Rolf Christian Hoxmark

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  1. Rolf Christian Hoxmark
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Hoxmark, R.C. Protein composition of different stages in the life cycle of Ulva mutabilis, Føyn. Planta 130, 327–332 (1976). https://doi.org/10.1007/BF00387841

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  • DOI: https://doi.org/10.1007/BF00387841

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