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Effect of culture medium ions on chromate reduction by resting cells of Agrobacterium radiobacter

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Abstract

The influence of some ions in pre-growth culture medium on chromate reduction by resting cells of Agrobacterium radiobacter strain EPS-916 was investigated. The reduction was dependent on the Fe2+ content of the culture medium: the higher the iron content, the lower the reduction rate. The cells showed maximum chromate reduction when pre-grown in the presence of 0.243 μm Mg2+, 20 μm Ca2+ and 3.6 μm Mn2+. Chromate reduction was not affected by the addition of MgCl2, CdCl2, ZnCl2, MnCl2, Na2SO4 (1000 μm), and Na2MoO4 (100 μm) to the activity assays. However, activity was inhibited by the presence of Na2SO4 (10 mm), Na2MoO4 (200 μm) and ferric citrate.

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Authors and Affiliations

  1. Departamento de Microbiologia y Parasitologia Sanitarias, Facultad de Farmacia, Universidad de Barcelona, Avenida Diagonal s/n, 08 028, Barcelona, Spain

    Santiago LLovera, Ramon Bonet, Maria Dolores Simon-Pujol & Francisco Congregado

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  1. Santiago LLovera
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  2. Ramon Bonet
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  3. Maria Dolores Simon-Pujol
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  4. Francisco Congregado
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LLovera, S., Bonet, R., Simon-Pujol, M.D. et al. Effect of culture medium ions on chromate reduction by resting cells of Agrobacterium radiobacter . Appl Microbiol Biotechnol 39, 424–426 (1993). https://doi.org/10.1007/BF00192105

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  • DOI: https://doi.org/10.1007/BF00192105

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