Silica-containing inclusions in the cytoplasm of diatom Synedra acus.

Autor:	Grachev MA; Limnological Institute, Siberian Branch, Russian Academy of Sciences, Irkutsk, 664033, Russia., Bedoshvili YD; Limnological Institute, Siberian Branch, Russian Academy of Sciences, Irkutsk, 664033, Russia. bedoshvilied@list.ru., Gerasimov EY; Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent'eva 5, Novosibirsk, 630090, Russia., Zaikovskii VI; Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent'eva 5, Novosibirsk, 630090, Russia., Gneusheva KV; Limnological Institute, Siberian Branch, Russian Academy of Sciences, Irkutsk, 664033, Russia., Likhoshway YV; Limnological Institute, Siberian Branch, Russian Academy of Sciences, Irkutsk, 664033, Russia.
Jazyk:	angličtina
Zdroj:	Doklady. Biochemistry and biophysics [Dokl Biochem Biophys] 2017 Jan; Vol. 472 (1), pp. 44-48. Date of Electronic Publication: 2017 Apr 19.
DOI:	10.1134/S1607672917010124
Abstrakt:	Cells of the araphid pennate diatom Synedra acus subsp. radians contain large inclusion (1-15 μm) storing silica, as revealed by transmission electron microscopy and EDX-analysis. The size of the inclusions increases with the time of cultivation of diatoms. Approximate concentration of SiO 2 in the inclusions is 1-4%. It is assumed that silica in the inclusions is present as gelatinized silica-gel. These results explain the possible mechanism of transport of silicic acid into the cell against the concentration gradient.
Databáze:	MEDLINE
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