2005•Chinese Bulletin of BotanyRequires access

Mechanism of Plant Photosynthetic Acclimation to Elevated Atmospheric CO_2

Fan Gui

Abstract

The photosynthetic acclimation mechanism to elevated atmospheric carbon dioxide hasbeen explained by several hypotheses: the feedback restraint on photosynthesis caused by carbohy-drate deposits and redox signals arising from the plastoquinone pool and the accumulation of hydro-gen 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 byC/N balance, plant growth regulators and hexoses might also result in photosynthetic acclimation.

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Key concepts: Photosynthesis, RuBisCO, Acclimatization, Carbon dioxide, Photorespiration, Botany, Plastoquinone, Chemistry