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Journal of Cell Science, Vol 14, 633-655, Copyright © 1974 by Company of Biologists

Submitted on July 26, 1973

Growth and Differentiation of the Golgi Apparatus in the Red Alga, Callithamnion Roseum

EVA KONRAD HAWKINS 1

1 Department of Biology, University of Pennsylvania Philadelphia, Pa. 19104. U.S.A.

The fine structure of the Golgi apparatus during development of tetrasporangia of Calli-thamnion roseum is described. Dictyosomes and associated vesicles of 4 developmental stages of sporangia are examined. The wall of sporangia exhibits a heretofore unseen cuticle in red algae. Development of the spore wall and a new plasma membrane around spores occurs through fusion of adjacent Golgi vesicles along the periphery of cells. Observations are discussed in relation to wall formation and expansion of tetrads and in comparison with other work on growth and differentiation of the Golgi apparatus.

Submitted on July 26, 1973






© The Company of Biologists Ltd 1974