Antagonistic effect of manganese to cadmium toxicity in the alga Dunaliella salina
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چکیده
منابع مشابه
Fatty Acid Acylated Proteins of the Halotolerant Alga Dunaliella salina.
The unicellular, wall-less alga Dunaliella salina has been shown to contain an array of proteins modified by the covalent attachment of fatty acids. Myristic acid (14:0) comprised approximately 80% by weight of the protein-linked acyl groups in samples derived from cells cultured in medium containing 1.7 molar NaCl and 93% in samples from cells grown in medium containing 3.0 molar NaCl. Palmiti...
متن کاملProduction of Antioxidant by the Green Alga Dunaliella salina
The variation of the lipophilic (carotenoids and α-tocopherol) and hydrophilic (glutathione and ascorbic acid) antioxidant contents, and the activities of antioxidant enzyme such superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD), as well as cellular malonaldehyde and stable radicals of D. salina in response to ultraviolet B (UV-B radiation 290-320 nm) and secondary carotenoid indu...
متن کاملNa-NMR Studies of the Intracellular Sodium Ion Concentration in the Halotolerant Alga Dunaliella salina.
The Intracellular Na(+) concentration in the halotolerant alga Dunaliella salina was measured in intact cells by (23)Na-NMR spectroscopy, utilizing the dysprosium tripolyphosphate complex as a sodium shift reagent, and was found to be 88 +/- 28 millimolar. Intracellular sodium ion content and intracellular volume were the same, within the experimental error, in cells adapted to grow in media co...
متن کاملThe role of intracellular orthophosphate in triggering osmoregulation in the alga Dunaliella salina.
A new hypothesis is presented for the mechanism of metabolic response during osmoregulation in the alga Dunaliella salina. We propose that the osmotic response is initiated by differential volume changes of the cytoplasm and the chloroplast (observed using the electron microscope) which alter the cytoplasmic orthophosphate concentration. This triggers a flow through the Pi/triose-phosphate shut...
متن کاملIdentification of Low Molecular Mass GTP-Binding Proteins in Membranes of the Halotolerant Alga Dunaliella salina.
A family of specific guanine nucleotide-binding proteins in Dunaliella salina was studied. Polypeptides of different subcellular fractions were separated by electrophoresis and transferred to nitrocellulose or Immobilon membranes. Incubation of the transfer blots with [(35)S]GTPgammaS or [alpha-(32)P]GTP showed no evidence for GTP-binding proteins in the chloroplast and cytosol fractions. Howev...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 1988
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps042097