How Abscisic Acid Causes Depressions of the Photosynthetic Capacity of Leaves

  • K. Raschke

Abstract

When a solution of ABA is fed into an illuminated leaf, stomata begin to close about 10 min later and the rate of CO2 assimilation, A, declines. Simultaneous measurements of water-vapor loss and CO2 uptake allow the computation of the intercellular partial pressure of CO2, ci. Such computations showed that often ci remained constant when the assimilation rate decreased in response to an application of ABA. Apparently, ABA had affected the photosynthetic machinery directly to an extent that the CO2 available in the leaf was used with reduced efficiency [1, 9]. This phenomenon was observed to occur in leaves of numerous species, monocots as well as dicots, and employing the C3 as well as the C4 mechanisms of photosynthesis [10]. In this contribution will be explained how application of ABA can cause depressions of photosynthesis at apparently constant computed ci.

Keywords

Starch Chlorophyll Depression Assimilation Photosynthesis 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Comic G, Miginiac E (1983) Plant Physiol 73:529CrossRefGoogle Scholar
  2. 2.
    Downton WJS, Loveys BR, Grant WJR (1988) New Phytol 108:263CrossRefGoogle Scholar
  3. 3.
    Farquhar GD, Hubick KT, Terashima I, Condon AG, Richards RA (1987) In: Biggins J (ed) Progress in photosynthesis research. Nijhoff, Dordrecht, p 209Google Scholar
  4. 4.
    Fischer E, Raschke K, Stitt M (1986) Planta 169:536CrossRefGoogle Scholar
  5. 5.
    Laisk A (1983) J Exp Bot 34:1627CrossRefGoogle Scholar
  6. 6.
    Laisk A, Kiirats O, Eichelmann H, Oja V (1987) In: Biggins J (ed) Progress in photosynthesis research. Nijhoff, Dordrecht, p 245Google Scholar
  7. 7.
    Oja VM (1983) Fiziol Rast 30:1045Google Scholar
  8. 8.
    Parlange JY, Waggoner PE (1970) Plant Physiol 46:337PubMedCrossRefGoogle Scholar
  9. 9.
    Raschke K (1982) In: Wareing PF (ed) Plant growth substances. Academic Press, London, p 581Google Scholar
  10. 10.
    Raschke K, Hedrich R (1985) Planta 163:105CrossRefGoogle Scholar
  11. 11.
    Schreiber U, Schliwa U, Bilger W (1986) Photosynth Res 10:51CrossRefGoogle Scholar
  12. 12.
    Terashima J, Wong SC, Osmond CB, Farquhar GD (1988) Plant Cell Physiol 29:385Google Scholar
  13. 13.
    Weis E, Berry JA (1988) Biochim Biophys Acta 894:198Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • K. Raschke
    • 1
  1. 1.Pflanzenphysiologisches Institut und Botanischer GartenUniversität GöttingenGöttingenGermany

Personalised recommendations