Oecologia

, Volume 85, Issue 3, pp 424–428 | Cite as

The absorption of inorganic phosphate from 32P-labeled inositol hexaphosphate by Eriophorum vaginatum

  • C. J. Kroehler
  • A. E. Linkins
Original Papers

Summary

A scarcity of available phosphorus often limits plant growth, and organic forms of phosphorus are not generally thought to be important direct sources of phosphate for plants. A dominant arctic tundra plant, Eriophorum vaginatum, is able to hydrolyze and absorb phosphate from a naturally occurring organic phosphorus compound at concentrations as low as those found in soil solution and at rates comparable to its ability to absorb inorganic phosphate. Calculations show that in tundra soils, where organic phosphorus is typically the predominant form of phosphorus in soil solution, E. vaginatum's root surface phosphatases may be capable of providing from organic phosphorus up to 69% of the plant's annual phosphorus demand.

Key words

Arctic ecology Eriophorum vaginatum Inositol hexaphosphate Phosphatases Phosphorus cycling 

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • C. J. Kroehler
    • 1
  • A. E. Linkins
    • 1
  1. 1.Department of BiologyVirginia Polytechnic Institute and State UniversityBlacksburgUSA
  2. 2.Virginia Water Resources Research CenterBlacksburgUSA
  3. 3.College of SciencesClarkson UniversityPotsdamUSA

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