Evolution of CAM and C4 Carbon‐Concentrating Mechanisms

  title={Evolution of CAM and C4 Carbon‐Concentrating Mechanisms},
  author={J. Keeley and P. Rundel},
  journal={International Journal of Plant Sciences},
  pages={S55 - S77}
  • J. Keeley, P. Rundel
  • Published 2003
  • Biology
  • International Journal of Plant Sciences
  • Mechanisms for concentrating carbon around the Rubisco enzyme, which drives the carbon‐reducing steps in photosynthesis, are widespread in plants; in vascular plants they are known as crassulacean acid metabolism (CAM) and C4 photosynthesis. CAM is common in desert succulents, tropical epiphytes, and aquatic plants and is characterized by nighttime fixation of CO2. The proximal selective factor driving the evolution of this CO2‐concentrating pathway is low daytime CO2, which results from the… CONTINUE READING
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