Springer Online Journal Archives 1860-2000
Abstract By a short treatment with acid of mt - gametes of Chlamydomonas eugametos, a factor is released which prevents gametic cell fusion, without affecting the viability of the cells. It has a very rapid action. By means of scanning electron microscopy it is shown that the factor has no influence on flagellar adhesion nor on the formation of a plasma papilla by cells of either mating type, but that it specifically inhibits the fusion of these papillae. Evidence is presented suggesting that this inhibitor has a predominant effect on mt + gametes. In cell pairs which are blocked with respect to papillar fusion, no flagellar disengagement occurs, which indicates that loss of agglutinability is a direct consequence of cell fusion.
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