The review of publications concerning the impact of increasing CO2 concentration in the Earth’s atmosphere (C a) on higher terrestrial plants. The physiological changes in plants induced by increasing C a, including growth and biochemical composition, the characteristics of photosynthesis and respiration, as well as the molecular mechanisms of the regulation of the activity of most important biosynthetic enzymes at early and late stages of the exposure to elevated C a are under consideration. Various concepts of metabolic regulation during acclimation to increasing CO2 concentration are critically reviewed. The pathways of possible involvement of carbonic anhydrase-mediated systems of CO2 transport and concentration during C3 photosynthesis of higher plants, the metabolic and signal mechanisms of photosynthesis inhibition by carbohydrates and the role of ethylene at elevated C a are presented. The effect of elevated C a on plant development and source-sink relations, as well as its interaction with other environmental factors, such as mineral, primarily nitrogen nutrition, light, temperature, and water regime, are discussed in with the context of potential forecasting of the consequences of increase in C a and temperature for the activities of various higher plant forms in the rapidly changing climate.
Russian Journal of Plant Physiology – Springer Journals
Published: Feb 19, 2005
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