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ULTRASTRUCTURE OF GLOEODINIUM MONTANUM (DINOPHYCEAE) 1
Author(s) -
Kelley Ingrid,
Pfester Lois A.
Publication year - 1991
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.0022-3646.1991.00414.x
Subject(s) - dinoflagellate , biology , dinophyceae , pyrenoid , ultrastructure , cytoplasm , chloroplast , botany , vacuole , electron micrographs , vesicle , thallus , electron microscope , microbiology and biotechnology , membrane , biochemistry , phytoplankton , ecology , physics , nutrient , optics , gene
The freshwater dinoflagellate Gloeodinium montanum Klebs (1912) was examined with transmission and scanning electron microscopy. Micrographs of ultrathin sections revealed a series of membrane layers rather than the usual dinoflagellate theca in vegetative cysts and in legates. Swarmers had distinct pellicles but appeared to be devoid of thecal plates and vesicles. The organization of cysts and swarmers appeared remarkably similar. All cell types had typical dinoflagellate nuclei with condensed chromosomes. Chloraplasts had girdle lamellae. One pyrenoid per cell was also present in chloroplasts of vegetative cysts. Starch grains and oil globules were distributed throughout the cytoplasm. Large accumulation bodies and polyvesicular vacuoles were found in aging cysts. Trichocysts and flagellar hairs were absent. Two types of intra‐cellular prokaryotic organisms were discovered.