RS Quatrano

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In brown algae fertilization takes place free from surrounding tissue layers. The cytoskeleton and transmembrane links to the cell wall are involved in establishing and stabilizing the polar axis and in determining the fate of cells in the early embryo. In seed plants, the egg cell and zygote exhibit apical basal polarity. Mutant studies suggest that axes(More)
Zygotes of the brown alga Fucus distichus L. Powell accumulate a sulfated polysaccharide (fucoidin) in the cell wall at the site of rhizoid formation. Previous work indicated that zygotes grown in seawater minus sulfate do not sulfate the preformed fucan (an unsulfated fucoidin) but form rhizoids. Under these conditions, we determined whether sulfation of(More)
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