Accumulation, effects on growth, and localization of zinc in Padina gymnospora (Dictyotales, Phaeophyceae)

Accumulation, effects on growth, and localization of zinc in Padina gymnospora (Dictyotales, Phaeophyceae)

Young plants of Padina gymnospora were exposed to 10, 20, 100, 1000 or 5000 ug zinc per litre as zinc sulphate in seawater under laboratory conditions for 21 d. The accumulation of zinc increased approximately linearly with the zinc concentration in the water and a steady state was not reached even...

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Veröffentlicht in:Hydrobiologia 1996-07, Vol.326-327 (1), p.451-456
Hauptverfasser: Amado Filho, GM, Karez, C S, Pfeiffer, W C, Yoneshigue-Valentin, Y, Farina, M
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Marine
Padina gymnospora
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container_end_page 456
container_issue 1
container_start_page 451
container_title Hydrobiologia
container_volume 326-327
creator Amado Filho, GM
Karez, C S
Pfeiffer, W C
Yoneshigue-Valentin, Y
Farina, M
description Young plants of Padina gymnospora were exposed to 10, 20, 100, 1000 or 5000 ug zinc per litre as zinc sulphate in seawater under laboratory conditions for 21 d. The accumulation of zinc increased approximately linearly with the zinc concentration in the water and a steady state was not reached even for high concentrations. Analytical electron microscopy techniques to determine the localization of zinc in the cells showed it to be present as dense granules along cell walls, starting 15 to 25 cells away from the thallus apex but being absent in the cytoplasm of viable cells.
doi_str_mv 10.1007/BF00047845
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subjects Marine
Padina gymnospora
title Accumulation, effects on growth, and localization of zinc in Padina gymnospora (Dictyotales, Phaeophyceae)
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