[Assimilation of nitrate in the dark by Lemna minor L].
1. Lemna minor is able to reduce nitrate in the dark when the nutrient medium contains yeast extract and glucose in addition to minerals salts. 2. When organic N is offered as a source of N in addition to nitrate, the former is assimilated preferentially, but both assimilation processes take place simultaneously. 3. Assimilation of nitrate in the dark under ecological conditions can be excluded.
Institut für Angewandte Botanik der Technischen Universität Berlin, Berlin, Deutschland.
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Bornkamm