Plant and Soil

, Volume 91, Issue 3, pp 363–365 | Cite as

Nitrate or ammonium nutrition in french bean

  • S. Chaillou
  • J. -F. Morot-Gaudry
  • C. Lesaint
  • L. Salsac
  • E. Jolivet
Article

Summary

Bean Plants were grown in a greenhouse in sand irrigated with nutrient solutions containing either 2 mM NO 3 or 2 mM NH 4 + . After 45 days fresh weight of NH 4 + plants was half that of NO 3 plants. Cation concentration in NH 4 + plants was 30% less than in NO 3 plants. Amino acids (SER, ASN, GLN) accummulated 3 to 10 times more in NH 4 + plants. The concentration of organic acids (malic, malonic, citric) was 10 to 30 times higher in NO 3 plants. The ATP-costings for the synthesis of amino acids and organic acids in NH 4 + plants was half that of NO 3 ones: therefore it could not account for the reduction of growth in the ammonium-fed plants.

Key words

Ammonium Metabolism Nitrate Phaseolus vulgaris L. 

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Copyright information

© Martinus Nijhoff Publishers 1986

Authors and Affiliations

  • S. Chaillou
    • 1
  • J. -F. Morot-Gaudry
    • 1
  • C. Lesaint
    • 1
  • L. Salsac
    • 1
  • E. Jolivet
    • 1
  1. 1.Laboratoire du Metabolisme et de la Nutrition des PlantesI.N.R.A.VersaillesFrance

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