PDF] THE CYTOPLASMIC FINE STRUCTURE OF THE DIATOM, NITZSCHIA PALEA

The cytoplasmic fine structure of the motile, pennate diatom, Nitzschia palea was studied in thin sections viewed in the electron microscope, and appears to be membrane limited, and oil droplets are found adjacent to the pyrenoid. The cytoplasmic fine structure of the motile, pennate diatom, Nitzschia palea was studied in thin sections viewed in the electron microscope. The cells were fixed in OsO4, embedded in methacrylate, and immersed in 10 per cent hydrofluoric acid (HF) for 36 to 40 hours to remove the siliceous cell wall prior to sectioning. The HF treatment did not cause any obvious cytoplasmic damage. The dictyosome complex is perinuclear, and located only in the central cytoplasm. Mitochondria are sparse in the central cytoplasm, but abundant in the peripheral cytoplasm, and fill many of the transvacuolar cytoplasmic strands. Characteristic, amorphous oil bodies fill certain cytoplasmic strands and probably are not leucosin. The pyrenoid appears to be membrane limited, and oil droplets are found adjacent to the pyrenoid. The pyrenoid of another diatom, Cymbella affinis, is also membrane-limited. The membrane limiting the pyrenoid may be a composite of the terminal portions of chloroplast discs, facilitating rapid movement of photosynthate into the pyrenoid matrix, where the characteristic oil droplets may be formed. Carinal fibrils are found singly in each carinal pore, and may be involved in the locomotion of Nitzschia palea.

E.e. cupp. diatoms

Fine structure of an unusual cytoplasmic inclusion in the diatom genus,Rhopalodia

PDF] Salinity-dependent diatom biosilicification implies an important role of external ionic strength

Intraspecific variation in metal tolerance modulate competition between two marine diatoms

PDF) Chloroplast structure of diatoms of different classes

A Guide to Diatoms as Indicators of Urban Stream Health

PDF) The complete chloroplast and mitochondrial genomes of the diatom Nitzschia palea (Bacillariophyceae) demonstrate high sequence similarity to the endosymbiont organelles of the dinotom Durinskia baltica

Differential protein analysis of saline-alkali promoting the oil accumulation in Nitzschia palea, Biotechnology for Biofuels and Bioproducts

Diatoms as potential “green” nanocomposite and nanoparticle synthesizers: challenges, prospects, and future materials applications, MRS Communications

Differential protein analysis of saline-alkali promoting the oil accumulation in Nitzschia palea, Biotechnology for Biofuels and Bioproducts

Qualitative and quantitative assessment of diatom deformities and protoplasmic condition under metal and metalloid stress