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Further studies on volume regulation and effects of copper in relation to pH and EDTA in the naked marine flagellateDunaliella marina

✍ Scribed by H. U. Riisgård; K. Nørgård Nielsen; B. Søgaard-Jensen

Publisher: Springer-Verlag
Year: 1980
Tongue: English
Weight: 804 KB
Volume: 56
Category: Article
ISSN: 0025-3162
DOI: 10.1007/bf00386864

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✦ Synopsis

The internal K § concentration in the marine flagellate Dunaliella marina has been found to be 4.8 to 5.5 times higher than in the extracellular fluid. D. marina cells (2) when the synthetic chelator EDTA is added in the volume readjustment phase the inhibiting effect of copper is to a certain degree suspended, less pronounced the later it is added. This work shows that the inhibiting effects of copper on volume regulation mechanism is influenced by the copper speciation.

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✍ H. U. Riisgård 📂 Article 📅 1979 🏛 Springer-Verlag 🌐 English ⚖ 468 KB

The marine flagellate Dunaliella marina responds to hypotonic media in the same way as animal cells: an initial phase of osmotic swelling occurs, followed by a second, more prolonged phase of cell shrinkage --the volume-regulation phase, m. marina also volume-regulates in hypertonic media. This does