Factors Affecting the Induction of Crassulacean Acid Metabolism in Mesembryanthemum crystallinum

  • G. E. Edwards
  • Z. Dai
  • S. H. Cheng
  • M. S. B. Ku
Part of the Ecological Studies book series (ECOLSTUD, volume 114)


Some succulent plants initially perform C3 photosynthesis but subsequently shift to CAM after developmental or environmental changes (e.g. photoperiod, water stress, day/night temperature). Species which have a strong dependency on the environment for expression of CAM are facultative, in contrast to obligate CAM plants which tend to function in the CAM mode under all conditions (Cockburn 1985; Winter 1985). Associated with this transition in facultative species is nocturnal opening of stomata with concomitant CO2 uptake, and diurnal fluctuations of tissue acidity and malate content. Facultative CAM plants may maximize their growth by assimilating carbon via the C3 pathway when environmental conditions are less stressful, and utilize the CAM mode when environmental conditions cause more potential for water stress.


Photosynthetic Photon Flux Density Crassulacean Acid Metabolism PSII Activity Crassulacean Acid Metabolism Plant PEPC Activity 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • G. E. Edwards
    • 1
  • Z. Dai
    • 1
  • S. H. Cheng
    • 1
  • M. S. B. Ku
    • 1
  1. 1.Department of BotanyWashington State UniversityPullmanUSA

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