Nickel requirement in Chlorella emersonii |
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Authors: | Carl J Soeder Gabriele Engelmann |
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Institution: | (1) Institut für Biotechnologie, Kernforschungsanlage Jülich GmbH, Postfach 1913, D-5170 Jülich 1, Germany |
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Abstract: | The dependence of growth on nickel supply was studied in Chlorella emersonii 211-8b. After transfer to Ni2+ deficient medium containing only 0.5±0.2 g/l of Ni2+, production of biomass or daughter cells dropped to 55±5% of the controls, and the cells became chlorotic. These symptoms of deficiency disappeared completely by supplying adequate amounts of nickel. They were, however, only partially reversible by cobalt. It is concluded that nickel is an essential micronutrient for C. emersonii, although this organism lacks the nickel enzyme, urease.Gratefully dedicated to Prof. Hans Adolf von Stosch on the occasion of his 70th birthday |
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Keywords: | Chlorella Cobalt Nickel Mineral deficiency |
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