
TY  - JOUR
A1  - Marchant, HJ 
A1  - Pickett-Heaps, JD 
T1  - Ultrastructure and Differentiation of Hlydrodictyon Reticulatum VI. Formation of the Germ Net
JF  - Australian Journal of Biological Sciences
JO  - Aust. Jnl. Of Bio. Sci.
Y1  - 1972
VL  - 25
IS  - 6
SP  - 1199
EP  - 1214
KW  - 
UR  - https://doi.org/10.1071/BI9721199 
N2  - Uninucleate, biflagellate, net-forming zoo ids arise by cleavage of the multi-nucleate cytoplasm of polyhedra. These zoo ids appeared to be indistinguishable from net-forming zooids produced by cylindrical coenocytes. Whereas zoo ids derived from cylindrical cells aggregated within their parental cell wall to form cylindrical nets, zooids produced by polyhedra swarmed within a spheroidal vesicle, probably derived from the inner layer of polyhedral wall, and aggregated usually as a flat net, similar to nets of other species of Hydrodictyon and vegetative colonies of Pediastrum. Bands of peripheral microtubules underlaid the initial sites of contact of aggregating zooids; the role of these microtubules, which were generally oriented in the plane of the developing net, and other aspects of patterned cellular aggregation are discussed. 
ER  -

