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Journal of Cell Science, Vol 17, Issue 3 647-653, Copyright © 1975 by Company of Biologists

JOURNAL ARTICLES

Ultrastructural localization of phosphohydrolases in gametes, zygotes and zoospores of Ulva mutabilis Foyn

T Braten

Gametes, zoospores, and zygotes of the multicellular, green alga Ulva mutabilis showed acid phosphatase reaction product in Golgi vesicles and on the membrane lining the vacuole. In addition gametes and zoospores showed enzyme reaction product on the entire surface membrane including the flagellar membrane. The surface membrane enzyme activity disappears from the zygote shortly after copulation and at the same time lysosome-like bodies start to appear in the cytoplasm. No alkaline phosphatase activity could be detected. The distribution of acid phosphatase is discussed in relation to the events taking place during and shortly after fertilization.




© The Company of Biologists Ltd 1975