Ultrastructure of Cryptoglena pigra from Korea

다국어 초록 (Multilingual Abstract)

Cryptoglena pigra Ehrenberg from Korea was a photosynthetic euglenoid alga, which had typical characteristics of
the Euglenales. The ultrastructure examination of C. pigra revealed certain features which were distinctly photosynthetic
euglenoid: one U-shaped chloroplast with thylakoid membranes; two paramylon grains appressed to both
sides of the chloroplast; eyespot associated with the chloroplast but not part of it. Three flagellar roots were associated
with the two basal bodies. The four-membered dorsal root arose from the dorsal body and extended anteriorly
following the reservoir membrane. At the base of the reservoir the dorsal band was nucleated by the dorsal root and
it ran anteriorly between the reservoir membrane and eyespot. The dorsal band was continued with the microtubules
of the canal and the pellicle. The singlet dorsal microtubules at the transition level arranged into doublets by
a successive linkage of the existing adjacent microtubules, and the doublets rearranged into the cytoskeletal microtubules
that were continuous with four microtubules in pellicles. Finally, the sixteen ridges gave rise to the pellicular
ridges. The five to six-membered ventral root extended anteriorly into a cytoplasmic pocket through the reservoir
and lined a cytoplasmic pocket.