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. 1975 Nov;56(5):584–589. doi: 10.1104/pp.56.5.584

Nitrogen Metabolism in Plant Cell Suspension Cultures

I. Effect of Amino Acids on Growth

Josef Behrend 1, Richard I Mateles 1
PMCID: PMC541876  PMID: 16659349

Abstract

Certain amino acids inhibit growth of tobacco (Nicotiana tabacum L. var. xanthi), tomato (Lycopersicon esculentum) carrot (Daucus carota), and soybean (Glycerine max L. co. Mandarin) cell cultures when nitrate or urea are the nitrogen sources but not when ammonia is the nitrogen source. These amino acids also inhibit development of nitrate reductase activity (NADH:nitrate oxidoreductase EC 1.6.6.1) in tobacco and tomato cultures. Threonine, the most inhibitory amino acid, also inhibits nitrate uptake in tobacco cells. Arginine, and some other amino acids, abolish the inhibition effects caused by other amino acids. We suggest that amino acids inhibit assimilation of intracellular ammonium into amino acids in cells grown on nitrate or urea.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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