53. Ott, D. W. and R. M. Brown, Jr. 1975.
Developmental cytology of the genus Vaucheria. III. Emergence,
settlement, and germination of the mature zoospore of V. fontinalis.
(L.) Christensen. British Phycol. J. 10:49-56.
53. Abstract
After septum formation and dissolution of
the zoosporangial apex wall in Vaucheria fontinalis (L.)
Christensen, a multi-flagellated zoospore is released and remains
motile for a few hours. Settlement of the zoospore occurs with
flagellar retraction, after which a cell wall is formed by peripheral
vesicles. Subsequent germination initiates polarity and the development
of vegetative filament growth. We have already described the
details of early zoosporogenesis in V. Fontinalis (Ott
& Brown, 1974b) and the present report will deal with subsequent
events including emergence, settlement and germination of the mature
zoospore 9Fig. 1). Greenwood (1959) investigated the zoospore
and its later development. We hope to extend Greenwood's observations
and to clarify some misconceptions which may have arisen from
earlier investigations.