Zoospore Ciliation in the Plasmodiophorales

Abstract

ZOOSPORES of Plasmodiophora brassicæ, Woron. and Spongospora subterranea, (Wallroth) Lagerheim have been described in the literature as uniciliate. Examination of active zoospores would appear to substantiate this description. However, when preparations stained by Cotners1 method are used, it can be shown that in addition to the long cilium, so apparent in the living zoospore, there is another which is shorter and less conspicuous. This biciliate character is illustrated by photomicrographs of zoospores of P. brassicæ (Figs. 1 and 2) and S. subterranea (Figs. 3 and 4).

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References

  1. 1

    Bot. Gaz., 89, 295; 1930.

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