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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/11010

Title: Light and electron microscopic studies of the fusion cell in Asterocolax gardneri Setch. (Rhodophyta, Ceramiales)
Authors: P. Kugrens
Issue Date: 1981
Publisher: J. Phycol.
Citation: 17, 215-223
Abstract: The fusion cell in Asterocolax gardneri Setch, is a large, multinucleate, irregularly-shaped cell resulting from cytoplasmic fusions of haploid and diploid cells. Subsequent enlargement takes place by incorporating adjacent gonimoblast cells. The resultant cell consists of two parts—a central portion of isolated cytoplasm, surrounded by an electron dense cytoplasmic barrier, and the main component of the fusion cell cytoplasm surrounding the isolated cytoplasm. The fusion cell contains many nuclei, large quantities of floridean starch, endoplasmic reticulum, and vesicles, but few mitochondria, plastids and dictyosomes. The endoplasmic reticulum forms vesicles that apparently secrete large quantities of extracellular mucilage which surrounds the entire carposporophyte. The isolated cytoplasm also is multinucleate but lacks starch and a plasma membrane. Few plastids, ribosomes and mitochondria are found in this cytoplasm. However, numerous endoplasmic reticulum cisternae occur near the cytoplasmic barrier and they appear to secrete material for the barrier. In maturecarposporophytes, all organelles in the isolated cytoplasm have degenerated
URI: http://hdl.handle.net/123456789/11010
Appears in Collections:College of Science

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