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Plant and Soil

, Volume 136, Issue 2, pp 273–275 | Cite as

Promotion of root elongation by phosphorus deficiency

  • M. Anuradha
  • A. Narayanan
Short Communications

Abstract

Decrease of culture solution pH and increase in cation/anion ratio in the plant were observed when horsegram (Macrotyloma uniflorum (Lam.) Verdc.) was grown in solution culture deficient in phosphorus. The effux of H+ from the roots of −P plants was observed in bromocresol purple agar. The length of root cells was considerably increased by −P treatment. Thus a close correlation between H+ excretion, length of the root cells and root elongation in response to P deficiency was established.

Key words

cell elongation H+ efflux Macrotyloma uniflorum (Lam.) Verdc. pH phosphorus deficiency 

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References

  1. Hedley M J et al. 1982 New Phytol. 91, 31–44.Google Scholar
  2. Hedley M J et al. 1983 New Phytol. 95, 69–82.Google Scholar
  3. Hoffland E et al. 1989a Plant and Soil 113, 155–160.Google Scholar
  4. Hoffland E et al. 1989b Plant and Soil 113, 161–165.Google Scholar
  5. Jackson M L 1967 Soil Chemical Analysis. Prentice-Hall of India Pvt Ltd., New Delhi p 498.Google Scholar
  6. Johnson C M et al. 1957 Plant and Soil 8, 337–353.Google Scholar
  7. Koening B A and Johnson C R 1942 Indust. Engng. Chem. Anal. 14, 135–156.Google Scholar
  8. Lakshmi P and Narayanan A 1988 Pl. Physiol. Biochem. 15, 116–122.Google Scholar
  9. Marschner H et al. 1986 Z. Pflanzenernaehr. Bodenkd. 149, 441–446.Google Scholar
  10. Moorby H et al. 1988 Plant and Soil 105, 247–263.Google Scholar
  11. Narayanan A and Reddy B K 1982In Plant Nutrition, Vol. 2. Ed. A Scaife. pp 412–417. Commonwealth Agricultural Bureau, Slough, UK.Google Scholar
  12. Nye P H 1981 Plant and Soil 61, 7–26.Google Scholar
  13. Ray P M and Ruesink A W 1962 Dev. Biol. 4, 377–397.Google Scholar
  14. Rayle D L and Cleland R 1970 Plant Physiol. 46, 250–253.Google Scholar
  15. Rayle D L and Cleland R 1972 Planta 104, 282–296.Google Scholar
  16. Rayle D L 1973 Planta 114, 68–73.Google Scholar
  17. Riley D and Barber S A 1971 Soil Sci. Soc. Am. Proc. 35, 301–306.Google Scholar
  18. Schenk M K and Barber S A 1979 Soil Sci. Soc. Am. J. 43, 880–883.Google Scholar
  19. Tabatabai M A and Bremner J M 1970 Agron. J. 62, 805–806.Google Scholar
  20. Zidan I et al. 1990 Plant Physiol. 93, 7–11.Google Scholar

Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • M. Anuradha
    • 1
  • A. Narayanan
    • 1
  1. 1.Department of Plant PhysiologyAgricultural College (A.P. Agricultural University)BapatlaIndia

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