ELECTRON-MICROSCOPICAL STUDIES ON THE PHYCOBIONT COCCOMYXA SCHMIDLE

Authors

  • ELISABETH PEVELING,

    1. Botanisches Institut der Westfälischen Wilhelms-Universität Müinster, West Germany and Department of Botany, Tel Aviv University, The Dr George S. Wise Center for Life Sciences, Tel Aviv, Israel
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  • MARGALITH GALUN

    1. Botanisches Institut der Westfälischen Wilhelms-Universität Müinster, West Germany and Department of Botany, Tel Aviv University, The Dr George S. Wise Center for Life Sciences, Tel Aviv, Israel
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Summary

The ultrastructure of the phycobiont, Coccomyxa, was compared in some asco- and basidiolichens. All phycobionts investigated contained a single cup-shaped chloroplast, multivesicular bodies and large storage bodies. In the chloroplast of the phycobionts in ascolichens, many plastoglobuli occurred regularly whereas, in those of the basidiolichens, no plastoglobuli were present. The multivesicular bodies were associated with varying numbers of vesicles and storage bodies. The storage bodies increased when the lichens were kept dry for several months. By cytochemical tests, the lipid nature of these bodies was suggested. The possible function of the different structures is discussed in comparison with the ultrastructure of other lichens.

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