Chinese Bulletin of Botany ›› 2005, Vol. 22 ›› Issue (04): 486-493.

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Mechanism of Plant Photosynthetic Acclimation to Elevated Atmospheric CO2

FAN Gui-Zhi CAI Qing-Sheng   

  1. (College of Life Sciences, Nanjing Agricultural University, Nanjing 210095)
  • Received:2004-02-17 Revised:2004-04-09 Online:2005-08-30 Published:2005-08-30

Abstract: The photosynthetic acclimation mechanism to elevated atmospheric carbon dioxide has been explained by several hypotheses: the feedback restraint on photosynthesis caused by carbohydrate deposits and redox signals arising from the plastoquinone pool and the accumulation of hydrogen peroxide; decreased rubisco content and activity induced by levels of rubisco subunit mRNA; and changes in stomatal states. In addition, the level of photosynthesis gene expression induced by C/N balance, plant growth regulators and hexoses might also result in photosynthetic acclimation.

Key words: Elevated atmospheric CO2 concentration, Photosynthetic acclimation, Feedback restrain, Stomata