Enzyme Activities Associated with Carbon Dioxide Exchange in Illuminated Leaves of Hordeum vulgare L.: III. Effects of Concentration and Form of Nitrogen Supplied on Carbon Dioxide Compensation Point |
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Authors: | FAIR P; TEW J; CRESSWELL C F |
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Institution: | Department of Botany, University of the Witwatersrand Johannesburg, South Africa |
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Abstract: | Increasing the nitrate concentration in the nutrient media wasfound not to influence the carbon dioxide compensation point( ). However, a higher value of was obtained in the presenceof ammonia nitrogen in the nutrient media. Increasing the nitrateconcentration in the media gave a higher activity of RuDP carboxylase,nitrate reductase, glycollate oxidase, and catalase. Similarlythe plants grown in ammonia nitrogen showed higher activitiesof RuDP carboxylase and catalase, and a considerably higherglycollate oxidase activity. |
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