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


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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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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