Physiological Impacts of Elevated CO2 Concentration Ranging from Molecular to Whole Plant Responses

By Otmar Urban. Photosynthetica (Praha), 2003

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Seventeen years of elevated CO2 exposure in a Chesapeake Bay Wetland: sustained but contrasting responses of plant growth and CO2 uptake (2005, background): “Elevated Ca modifies plant hormone levels and cell division (Urban, 2003), which potentially affects shoot density in a manner quite independent of the more direct effect of elevated Ca on photosynthesis.”
Elevated CO2 reduces disease incidence and severity of a red maple fungal pathogen via changes in host physiology and leaf chemistry (2005, background): “Such changes include reduced stomatal density (SD), size and/or conductance, reduced leaf nutritional quality, increased defensive compounds, and increased leaf wax (Jackson et al., 1994; Field et al., 1995; Drake et al., 1997; Saxe et al., 1998; Urban, 2003).”
The response of nodulated alfalfa to water supply, temperature and elevated CO2: photosynthetic downregulation (2005, unknown): “A decrease in rubisco content is often correlated with a decrease in photosynthesis after exposure to elevated CO2 (Urban 2003).”